Wolt is looking for a senior Android Engineer to expand our Consumer Mobile Platform team. The team is part of the Consumer Product group and is responsible for enabling the delivery of the consumer mobile apps that millions of people in over 20 countries around the world see when ordering food and other products.

We're an AI-first team by design: we treat agentic coding as a core engineering discipline. We expect our engineers to use AI-assisted workflows and developer agents to amplify productivity, improve developer experience, and rethink how features are specified, reviewed, and shipped.

Our client platform teams have a clear mission:

“Enable delivery and ownership of Wolt-grade Consumer Client Applications through engineering excellence and domain expertise.”

As part of the team, and to fulfil our mission, you will focus on many different areas:

• Building the foundation of our top-rated consumer facing applications
• Enablement of our product teams, architecture and platform robustness, observability, developer experience, and more. 
• Driving technical initiatives to foster our engineering excellence
• Aligning with multiple stakeholders
• Supporting product development teams by providing a robust platform that makes it simple and fast for our features to reach our millions of customers
• If you like to communicate with many stakeholders, think about the long-term health and quality of customer experience and technical solutions, find ways to make other engineers’ lives easier and raise the bar of engineering excellence, this is the team for you!
• Integrate AI-assisted developer workflows
• Build developer tooling & guardrails for AI assistants
• Measure & maintain reliability of AI-assisted outputs through observability, testing and review policies.

This role can be based in one of our tech hubs in Helsinki, Stockholm, Tallinn or Berlin. Feel free to check the Wolt Tech Blog for more read about our culture & technology here.

Our humble expectations*

• Experienced in Android development
• Understanding of the Android ecosystem and platform
• A strong interest in building a maintainable and extensible Android platform
• End-to-end system design understanding
• Experienced with CI/CD pipelines
• Strong communication skills
• Stakeholder management
• Familiar with driving initiatives across an engineering organisation
• Optional, but great to have: Experience/strong interest in mobile observability
• Have an eye for great user experience
• Enthusiasm for AI-first development; you use AI tools and can judge when they help.
• Experience integrating AI tools into engineering workflows (e.g., code assistants, CI automations).

About the role: What's in the Box

The service provider will contribute to the Shopping tribes within the Consumer Alliance, which oversee the core shopping experience across mobile and web applications—ranging from menu discovery and search to cart management and checkout. As a Senior Staff Mobile Engineer, the external expert will focus on shaping the high-level architecture and technical quality of the React Native mobile application that powers this global experience. This engagement involves providing high-level technical direction across multiple squads to ensure the scalability and modularity of the consumer-facing platforms.

What you’ll do: The Recipe

• Define and drive the mobile architecture and engineering standards across the alliance, ensuring solutions are scalable and modular.
• Drive a unified app and web context management strategy to support quality assurance workflows and AI-driven agentic development lifecycle tooling.
• Optimize GraphQL API usage and data fetching patterns within the mobile application.
• Provide significant hands-on contributions to the codebase to implement core architectural patterns.
• Communicate technical direction, trade-offs, and project milestones to primary stakeholders and senior management.
• Collaborate with peers across engineering, product, and design, offering expert perspectives on technical feasibility and system design.

What you’ll bring: The Ingredients

• Genuine enthusiasm for AI-supported and agentic ways of working, with a drive to implement these methodologies at an enterprise scale.
• Deep expertise in React Native, with extensive experience delivering complex, large-scale mobile applications.
• Proven track record in architecting modular mobile systems and leading large-scale technical migrations.
• Versatility to contribute to backend services or web codebases as required by project demands.
• Experience with GraphQL and React for web is highly desirable.

Above all, we are looking for individuals who will make HelloFresh better. We believe there are many different ways of developing skills and we love diverse experiences! So even if you don’t “tick all the boxes” but think you’d thrive in this role, we would really like to learn more about you.

What we offer: The Toppings

• Global collaboration at scale: Collaborate with experienced engineers and product partners across HelloTech’s international teams, in a culture of active knowledge sharing.
• Technology with real-world impact: Build and operate modern systems at global scale, supporting 6+ millions of customers and complex supply chain operations.
• Technical/Product/Design leadership: Drive best practices and influence architecture/design, quality, and ways of working in an autonomous, product-led setup.
• End-to-end development/delivery: Drive decisions from problem definition to production, improving systems and enabling long-term scalability.
• Access to workspace at Warsaw Centre Point: The hub offers modern facilities including showers, breakout zones, outdoor space, cycle parking, and refreshments (coffee, soft drinks, and fruit).

Are you the missing ingredient? If this sounds like a tasty opportunity, we’d be excited to hear from you. We aim to review your profile and respond within 5 business days.

Senior Service Reliability Engineer 

As a part of Sony Interactive Entertainment, the Gaming, Developer & Future Technology Group (GDFT) is leading the cloud gaming revolution, putting console-quality video games on any device, from TVs to consoles to mobile devices and beyond. 

Our Site Reliability Engineering team plays a significant role in delivering on the promise of a great cloud gaming experience to our customers. We do this by influencing design and operational decisions towards the overall stability of the gaming service. Our SREs focus on three main things: overall ownership of production, production code quality, and deployments. The successful candidate will be self-directed and able to participate in the way we make decisions at different levels. 

We expect our SREs to have opinions on the state of our service and provide critical feedback during different phases of the operational lifecycle. We are engaged throughout the software development lifecycle, ensuring operational readiness and stability. 

What you'll be doing: 

• Taking a leadership role in ongoing improvements in Reliability and Scalability 

• Work closely with SRE Management to define KPIs, processes and drive continuous improvement 

• Influence the architecture and implementation of solutions within the division 

• Mentor more junior SRE staff and enable them for success 

• Act as a voice to represent SRE in the wider organisation 

• Represent the operational scalability of solutions in the wider division 

• Lead small-scale projects from inception to implementation 

• Design platform-wide solutions and provide technical leadership during their implementation 

• Demonstrate a high-level of organizational skills and initiative in the role 

What we're looking for:

• Minimum of 7+ years working experience in Software Development and/or Linux Systems Administration role. 

• Strong interpersonal, written and verbal communication skills. 

• Available to be scheduled in on-call rotation. 

Skills & Knowledge:

• Proficient as a Linux Production Systems Engineer, with experience managing large scale Web Services infrastructure. 

• Development experience in one or more of the following programming languages: 

• Python (preferred) 

• Bash, Go, Java, C++, or Rust 

• In addition, experience with at least 3 of the following topics: 

• Distributed data storage at scale (Hadoop, Ceph) 

• NoSQL at scale (MongoDB, Redis, Cassandra) 

• Data aggregation technologies. (ElasticSearch, Kafka) 

• Scaling and running traditional RDBMS (PostgreSQL, MySQL) with High Availability 

• Monitoring & alerting (Prometheus, Grafana), and Incident Management toolsets  

• Kubernetes and/or AWS (deployment and management)  

• Software distribution (Package management and distribution at scale) 

• Configuration management (ansible, saltstack, puppet, chef) 

• Software performance analysis and load testing (QA or SDET experience: a plus) 

 What you'll be doing: 

• Taking a leadership role in ongoing improvements in Reliability and Scalability 

• Work closely with SRE Management to define KPIs, processes and drive continuous improvement 

• Influence the architecture and implementation of solutions within the division 

• Mentor more junior SRE staff and enable them for success 

• Act as a voice to represent SRE in the wider organisation 

• Represent the operational scalability of solutions in the wider division 

• Lead small-scale projects from inception to implementation 

• Design platform-wide solutions and provide technical leadership during their implementation 
  
  
• Demonstrate a high-level of organizational skills and initiative in the role 

Site Reliability Engineer

As a part of Sony Computer Entertainment, the Gaming, Developer & Future Technology Group (GDFT) is leading the cloud gaming revolution, putting console-quality video games on any device, from TVs to consoles to mobile devices and beyond.

Our Site Reliability Engineering team plays a significant role in delivering on the promise of a great cloud gaming experience to our customers. We do this by influencing design and operational decisions towards the overall stability of the gaming service. Our SREs focus on three main things: overall ownership of production, production code quality, and deployments. The successful candidate will be self-directed and able to participate in the way we make decisions at different levels.

We expect our SREs to have opinions on the state of our service and provide critical feedback during different phases of the operational lifecycle. We are engaged throughout the software development lifecycle, ensuring the operational readiness and stability.

What you'll be doing:

• Lead team technical discussions, especially around ongoing improvements in Reliability and Scalability
• Be involved in creating High Level Designs (HLDs) for new products and platforms
• Mentor junior SRE staff and enable them for success
• Lead incident response and post-mortem activities within your assigned service team
• Work with other Engineers in a cross-functional team to prioritise reliability improvements to address technical debt and toil
• Contribute to code to improve reliability
• Implement automation to reduce ongoing toil

What we're looking for:

• Minimum of 5+ years working experience in Software Development and/or Linux Systems Administration role.
• Strong interpersonal, written and verbal communication skills.
• Available to be scheduled in on-call rotation.

Skills & Knowledge:

• Proficient as a Linux Production Systems Engineer, with experience managing large scale Web Services infrastructure.
• Development experience in one or more of the following programming languages:
• Python (preferred)
• Bash, Go, Java, C++, or Rust
• In addition, experience with at least 3 of the following topics:
• Distributed data storage at scale (Hadoop, Ceph)
• NoSQL at scale (MongoDB, Redis, Cassandra)
• Data Aggregation technologies. (ElasticSearch, Kafka)
• Scaling and running traditional RDBMS (PostgreSQL, MySQL) with High Availability
• Monitoring & Alerting (Prometheus, Grafana), and Incident Management toolsets
• Kubernetes and/or AWS (deployment and management)
• Software Distribution (Package management and distribution at scale)
• Configuration Management (ansible, saltstack, puppet, chef)
• S/W Performance analysis and load testing (QA or SDET experience: a plus)

About GetYourGuide

GetYourGuide is the globally leading marketplace for unforgettable travel experiences. Travelers use GetYourGuide to discover the best things to do in a destination. Since its founding in 2009, people from all over the world have booked more than 150 million tours, activities, and attraction tickets through GetYourGuide. Powered by a global team of over 800 travel experts and technologists, we are headquartered in Berlin and have 17 local offices around the world. Visit our careers website to learn more

Team Mission:

Technology has been and continues to be the catalyst for GetYourGuide’s growth. Our work in Design, Engineering, and Product is shaping the global travel experiences category — and you can help.
The products we build enable our customers to book unforgettable experiences and our partners to grow their businesses. This is a complex task that comes with an extraordinary opportunity. From developing the fintech infrastructure that simplifies customer payments to shaping the next leg of our growth journey, you can build incredible things at GetYourGuide, on a global scale.

At GetYourGuide, the Engineering team constantly pushes the boundaries and finds new ways to bring the magic of travel to people worldwide.

We’re organized in cross-functional mission teams, which are composed of software engineers, mobile engineers and data engineers, along with product managers and designers.

You will: 

• Work as a Senior Software Engineer (Frontend focus) in a product team. We are a highly collaborative, customer-oriented team where every engineer is expected to contribute to solving real user problems and shaping the product experience.
• The role is an 80/20 full-stack position, working primarily with TypeScript and Node.js on the Backend. It requires strong experience across both frontend and backend development. A key part of the role involves owning our Server-Driven UI backend-for-frontend (BFF) layer — designing and implementing backend components that deliver dynamic UI configurations tailored to specific frontend needs and ultimately enhance the end-user experience.
• You'll be working closely with product managers, designers, and stakeholders, so strong stakeholder management skills are essential. We value engineers who are not only technically strong but also comfortable driving conversations, aligning with business needs, and advocating for the customer at every step.
• To support your mission team in quickly iterating and gaining insights into our customers, you will focus on designing, launching, and iterating on A/B experiments while continuously improving our codebase, systems, and processes. 
• You will aim to design and develop efficient solutions that can scale effectively, and prioritize mentoring other team members and participating in the hiring process.
• Work involves technologies such as Vue.js, TypeScript, and Node.js, along with exposure to Java and Spring Boot.

Who you are: 

• 6+ years of software development experience
• Expertise in web application development using component-based frameworks
• High proficiency in TypeScript
• Experience designing architecture and deployment of web applications & services
• Experience with writing tests
• Ability to turn ideas into fast, reliable, and maintainable code
• Positive, proactive team player who is passionate about their craft
• Customer-centric prioritization and data-driven decision making
• Excellent written and verbal communication skills in English
  
  

Bonus points for:

• Backend experience with Java and Springboot
• Experience with A/B testing, hypothesis building, and event-based analytics
• Knowledge of frameworks and toolchains such as Node.js, Vue.j,s or similar component-based Frontend application frameworks
• Prior experience working in the e-commerce space
• Prior experience in start-up environments

How we set you up for success:

• Invest in your development with an annual personal growth budget
• Become a part of our success with virtual stock options
• Enjoy flexibility with a hybrid work-from-home and telecommuting policy
• Save on transportation costs with discounted public transportation tickets
• Support your loved ones with generous maternity and paternity leave policies

And more…

We look forward to hearing from you

Unlock your full potential and join our mission to create unforgettable experiences for millions around the world. If you have the skills and passion for joining our team, we invite you to apply by submitting your CV/resume in English through the form below. Check out how we hire for tips and visibility into our process and check out life at GetYourGuide. If you have any further questions, please do not hesitate to contact us via jobs@getyourguide.com.

We are an equal opportunity employer

We commit that every qualified person will be evaluated according to skills regardless of age, gender identity, ethnicity, sexual orientation, disability status, or religion. Please refrain from including your picture and age with the application.

The Role

Gigs is growing fast across markets, and we need someone to build the operational systems that make that growth possible. That includes compliance -- but this isn't a compliance role. It's a BizOps role where regulatory work is one of the hardest and most important problems you'll solve.

You'll build workflows, design processes, ship tooling, and work across Business Development, Legal, Product, and Engineering. You'll enable how we launch new markets, how we stay compliant across jurisdictions, and how we keep internal operations tight as we scale.

This is our first hire in this area. You'll shape the function from scratch.

What You Will Do

• Build our operational infrastructure for market expansion. Own the end-to-end process for launching in new markets: regulatory readiness, product compliance checks, internal workflows, and cross-functional coordination.
• Turn regulatory requirements into systems. Work with Legal to understand what's required, then build clear, repeatable processes that the team can follow without bottlenecks. Don't just document rules -- make them run.
• Automate before it breaks. Partner with Engineering and Product to embed controls into our systems early. Reduce manual work. Build things that scale before they need to.
• Own filings, registrations, and reporting. Manage our ongoing regulatory obligations across jurisdictions. Track deadlines. Make sure nothing slips.
• Run audits. Develop audit frameworks for internal operations and customer-facing processes. Keep them current.
• Track compliance health. Define metrics, build dashboards, flag problems early, fix them fast.
• Keep documentation sharp. Maintain policies, procedures, and process docs that are clear, findable, and up to date.
• Stay ahead of regulatory changes. Monitor new requirements across target markets. Build implementation plans before deadlines arrive.

What We Are Looking For

• 5+ years in business operations, ideally at a fintech, payments company, or other regulated tech business.
• You've built or scaled operational systems in a fast-moving environment. You know how to take a messy process, structure it, and make it run.
• Real experience with compliance or regulatory work -- not as a lawyer, but as someone who's turned regulatory requirements into working processes across areas like product compliance, vendor risk, or cross-border operations.
• Comfortable with tooling: GRC systems, databases, workflow automation. You don't need to be an engineer, but you can build things using AI.
• Strong communicator. You can explain a regulatory filing to an engineer and a process gap to a lawyer.

Bonus if you have experience in telecoms, fintech, or B2B SaaS.

The Role

• You will help build Connect, our consumer-facing hosted checkout and subscription management service, and related projects to deliver the best experience for our customers and their users.
• You will bring new ideas to directly shape our app development and products beyond our established work.
• You will work with a modern tech stack using Next.js, React, TypeScript and Tailwind CSS.
• You will use your skills for Frontend and Backend technologies built on top of Next.js.
• You will take ownership of features from planning and implementing to shipping and optimizing.
• You will work closely with our UI/UX team to develop the best possible experiences for our users.
• You will help design maintainable and scalable software architectures.
• You will give feedback, ideas, and code reviews to your colleagues.
• You will collaborate with colleagues across the engineering organization through cross-functional working groups and our RFC process.

Salary range: €85k - €120k.

What We Are Looking For

• You have advanced experience building web apps using React. You are a TypeScript pro, know your way around Next.js, and can implement common and advanced React patterns. You’ve been doing this for 5+ years. Working with git is natural for you.
• You enjoy building best-in-class experiences. You know what makes apps excellent, you can give your input and are able to implement the best possible UX.
• You have built and maintained scalable apps. You love to build things for scale and have experience in designing app architectures and writing high-quality code.
• You enjoy building a product from scratch. This means high involvement in the design process and understanding what customers want and users need.
• You love learning technologies as you go. You always want to find the right tool for the job, and not only follow what you already know.
• You care about more than engineering quality. Whatever you do, needs to have a business impact. You can make trade-offs between speed and quality.
• You are an all-rounder: You're fluent with RESTful APIs, worked with Docker, GCP, GitHub Actions, Cypress, or Testing Library, and have some experience with Ruby on Rails.

Bolt engineering teams are working on unique product challenges: complex algorithms for demand prediction, optimal real-time pricing, routing, fraud detection, distributed systems and much more. We are now seeking a proactive and detail-oriented Senior QA Engineer to join our team!

With over 200 million customers in 50+ countries, Bolt is one of the fastest-growing tech companies in Europe and Africa. And it's all thanks to our people.

We believe in creating an inclusive environment where everyone is welcome, regardless of race, colour, religion, gender identity, sexual orientation, national origin, age, or disability.

Our ultimate goal is to make cities for people, not cars, and we need your help to achieve this mission!

We seek a proactive and detail-oriented Senior QA Engineer to join our team. You will be part of a team, collaborating closely with Engineers, Designers, and Product Managers to ensure high-quality outcomes. You will fully own the QA process, drive quality standards and ensure efficient testing practices.

• Assist in testing product features at all stages of development to ensure quality and functionality.
• Perform release testing for our mobile app on both Android and iOS platforms, ensuring a seamless user experience.
• Collaborate closely with Engineers to plan and execute testing strategies, identifying and resolving issues early in the development cycle.
• Work with Engineers, Designers and Product Managers to review features and provide critical feedback for improving product design and usability.
• Support the team in keeping documentation updated and maintaining a healthy, efficient test suite.

• You are experienced with manual testing of mobile applications in both Android and iOS.
• You have experience with REST API testing and a solid understanding of how applications communicate with servers.
• You are familiar with performing release testing in an agile environment with a constant release lifecycle.
• You value a good user experience.
• You enjoy collaborating closely with software engineers and you don't shy away from taking ownership of different tasks and supporting other teams.

Experience is great, but we also look for drive, intelligence, and integrity. So, even if you don’t tick every box, please consider applying if you feel you’re the kind of person described above!

• Play a direct role in shaping the future of carsharing.
• Impact hundreds of thousands of customers and partners in 20+ cities across 7 countries.
• Work in fast-moving autonomous teams with some of the smartest people in the world.
• Accelerate your professional growth with unique career opportunities.
• Get a rewarding salary and stock option package that lets you focus on doing your best work.
• Enjoy the flexibility of working in a hybrid mode with at least 3 days in the office each week to foster strong connections and teamwork.
• Take care of your physical and mental health with our wellness perks.

*Some perks may differ depending on your location and role.

The Role

• Own complex problems end-to-end, working with our talented team to design and build robust, scalable solutions.
• Develop innovative products that empower our customers to bring world-class connectivity services to their users with ease.
• Uphold our high engineering standards, improving tooling and processes where necessary.
• Design, build and maintain best-in-class APIs and services. Contribute to our Ruby on Rails monolith and take an active part in breaking down our monolith towards a more distributed system. Be comfortable juggling multiple languages - we’re currently using Ruby, Go, Typescript and some Elixir. Depending on your team you might get in touch with some or all of these languages. You don’t need to have deep expertise in all of our languages, we will give you plenty of room to learn and grow with your team.
• Maintain the reliability of our systems by building for observability and participating in incident response as needed.

Salary range: €85k - €120k. 

You can find more about how we work on our engineering page.

What We Are Looking For

• You have experience designing APIs and building backend services. You enjoy thinking about systems, and you care about the quality of the software you produce.
• You enjoy building products from scratch. You care about finding the right solution to customer needs, and you’re comfortable taking ownership and delivering.
• You love learning technologies as you go. You always want to find the right tool for the job, and don't only follow what you already know.
• You care about more than just engineering. You need to see the business impacts of everything you do. You know how to make speed/quality trade-offs.

The Role

As a Senior Platform Engineer at Gigs, you'll work at the foundation of everything we build. You'll design, build, and operate the infrastructure and developer tooling that powers our connectivity and payments platform — enabling product teams to ship faster, more reliably, and at scale.

Our Foundation team owns the systems that every engineer at Gigs depends on: CI/CD pipelines, cloud infrastructure, observability, deployment tooling, and the shared platform services that keep our product running. You'll take ownership of complex infrastructure challenges end-to-end and drive them to production with a high bar for reliability and developer experience.

This is a role for someone who cares deeply about the craft of platform engineering — who gets energy from making other engineers more productive, who thinks in systems, and who isn't satisfied until the solution is both robust and elegant. You'll be joining a small, high-impact team where your work will directly shape how Gigs scales over the next few years.

What You Will Do

• Own and improve Gigs' cloud infrastructure, ensuring our platform is reliable, scalable, and cost-efficient as we grow.
• Design and build internal developer tooling and platform services that accelerate how product teams ship — from CI/CD pipelines to deployment workflows to local development environments.
• Drive improvements to our observability stack, making it easy for every engineer to understand system behavior, debug issues, and respond to incidents with confidence.
• Take complex infrastructure problems end-to-end: scoping, designing, implementing, and operating solutions in production.
• Collaborate closely with product engineering teams to understand their pain points and build platform capabilities that unblock them.
• Contribute to our infrastructure-as-code practices, ensuring our cloud environments are reproducible, auditable, and version-controlled.
• Participate in on-call rotations, incident response, and post-mortems — and use what you learn to make our systems more resilient.
• Raise the bar for platform engineering quality through code reviews, documentation, and advocating for best practices across the team.

What We Are Looking For

• You have 5+ years of professional software engineering experience, with meaningful time spent on infrastructure, platform, or DevOps/SRE work in a production environment.
• You have experience designing and building a platform layers e.g. centralised authentication, observability, routing logic, or API versioning which other product teams integrate against or build on top of.
• You have hands-on experience with cloud platforms (GCP preferred) and infrastructure-as-code tools like Terraform. You understand networking, compute, and storage at a level that lets you make good trade-offs.
• You have experience building and maintaining CI/CD pipelines and deployment systems. You care about developer experience and know that a great platform is one that engineers actually want to use.
• You think in systems. You can reason about distributed architectures, understand failure modes, and design for reliability and observability from the start.
• You enjoy building products from the infrastructure up. You care about finding the right solution to internal customer needs, and you're comfortable taking ownership and delivering.
• You communicate clearly and collaborate well. You can explain infrastructure decisions to product engineers, write useful documentation, and contribute to technical discussions with confidence.
• You care about more than just engineering — you want to see the business impact of everything you do, and you know how to make pragmatic speed/quality trade-offs.
• You have a growth mindset when it comes to tooling and practices. You stay curious about how the industry is evolving — including AI-assisted development — and you're thoughtful about adopting what makes you and your team more effective.

Bonus Points If

• You have experience with our stack: GCP (cloud run), Docker, Terraform, Ruby on Rails, Go, PostgreSQL, Kafka, PubSub.
• You have worked in fintech, payments, telecom, or other regulated industries where reliability and compliance matter.
• You have experience building developer-facing platforms or internal tooling at a high-growth startup (Series B–D).
• You have contributed to open-source infrastructure tooling or have a track record of improving developer productivity at scale.
• You use AI tooling as part of your engineering workflow and have developed a practical sense for where it adds value and where it doesn't — for example, using it for infrastructure scaffolding, debugging, exploring unfamiliar APIs, or drafting documentation, while knowing when to rely on your own judgment.

The Role

At Gigs, we believe that great IT should be frictionless: Team members should get the right access, the right tools, and the right support to be productive. For this we buy the right tools and build the right processes. You'll be instrumental in achieving this vision.

We're looking for an IT Systems Engineer to manage and automate our corporate infrastructure. This is a hands-on, shipping-focused role. You'll be joining the Security & IT team as the third team member.

The Security & IT team covers everything from employee lifecycle and enablement, devices, and connectivity, to service configuration, systems integration and internal helpdesk. We are pragmatic and aware of the trade-offs of a small team, making strategic decisions on where to show excellence and what we can’t bite off right now.

You will work on our day-to-day operational load, build systems and automations to reduce that operational load, as well as inform our strategic direction.

What You Will Do

• Design, build, and maintain automation workflows across our corporate systems stack (Okta, Google Workspace, Google Cloud, Jamf, Humaans HRIS, Linear issues …)
• Improve our joiners, movers and leavers flows to eliminate manual toil and ensure security consistency
• Improve our IT request workflows, as well as developing self-service solutions that empower employees to solve their own IT needs
• Own macOS device management: procurement with zero-touch enrollment, configuration right-sizing, app and OS updates, and day-to-day productivity
• Support our global offices (Berlin, London, Amsterdam, San Francisco, New York) with infrastructure and integrations.

What We Are Looking For

• Experience at a high-growth startup or scaleup (50-500 employees)
• Experience in roles at the intersection of IT, Security and Engineering, like IT Engineer, IT Systems Engineering, TechOps, or Security Engineer
• Coding fundamentals: comfortable writing and reading scripts (Shell, JavaScript, Ruby)
• Experience with:
  • MDM solutions (Jamf, Kandji, or similar) in a macOS-first environment
  • Identity providers (Okta, Google Workspace) and HRIS integrations
  • Workflow and AI platforms (Zapier, Tines, Claude, Notion AI, or similar)
  • Cloud environments (GCP, AWS)
• Systems thinking with the ability to design end-to-end workflows, not just individual scripts
• Strong communication skills and a user-oriented mindset
• Ability to work independently and prioritize in a fast-paced environment

We are hiring across multiple locations

India: Hyderabad, Delhi NCR, Bengaluru
Europe: London, Serbia, Sofia, Lithuania, Berlin

We are hiring across multiple locations

India: Hyderabad, Delhi NCR, Bengaluru
Europe: London, Serbia, Sofia, Lithuania, Berlin

ABOUT THE ROLE

Be at the forefront of the AI revolution, working on cutting-edge projects that shape the future of financial services. You’ll join a passionate team focused on building high-quality, scalable products with real-world impact.

We’re looking for a Staff-level Backend Engineer (AI) to bridge robust backend systems with Generative AI. You’ll design the frameworks, standards, and platforms that allow AI capabilities to scale securely, reliably, and efficiently across the enterprise, going beyond feature delivery to influence long-term technical direction.

As a Staff Engineer you’ll:

• Build core services for Tide’s agentic platform, including APIs, workflow orchestration, and tool integration 
• Integrate bought components where they accelerate delivery, and build where control, trust, and reuse matter most
• Work with product, data, platform, and security teams to productionise shared AI capabilities
• Design services that are reliable, secure, observable, and easy for other teams to adopt
• Help shape reusable engineering patterns for AI-enabled workflows

WHAT WE ARE LOOKING FOR:

• Strong backend or platform engineering experience in production environments.
• Good judgement across APIs, distributed systems, cloud infrastructure, and service design.
• Experience integrating internal and third-party platforms.
• Comfort working in ambiguity and turning emerging needs into robust platform components.
• Strong focus on quality, reliability, and developer usability.
• Experience with AI infrastructure or orchestration is helpful, but not essential.
• Experience in highly regulated industries (Fintech, Healthtech, etc.) where safety and compliance are core to the product is valuable, but not essential.
• Design and build automated evaluation pipelines to measure agent reasoning accuracy and safety trajectories

Our Tech Stack:

• Java, Spring Boot and JOOQ to build the RESTful APIs of our microservices (but we welcome people who are used to any strongly typed general purpose programming language!)
• Event-driven architecture with messages over SNS+SQS and Kafka to make them reliable
• Primary datastores are MySQL and PostgreSQL via RDS or Aurora (we are heavy AWS users)
• Docker, Terraform, EKS used by the Cloud team to run the platform
• DataDog and Rollbar to keep it running
• GitHub with Sonarcloud, Semgrep and solid testing to power the CI/CD pipelines - new joiners are encouraged to have something deployed to production in their first 2 weeks
• Angular 2+ with ngrx on Web, Flutter for the Mobile App
• Fivetran/Snowflake/Looker for the BI insights and Python/Faust/Flask/Tecton + some ML libs for the automated decisioning and risk management

About the role:  

We are in search of a solution-oriented Senior Software Engineer (Backend) with demonstrable experience in Rust, to help guide the development of secure, scalable, and high-performance backend systems for the Affinidi Elements platform. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. Your responsibilities will include delivering a multi-component platform, leveraging your experience in helping to design and developing production-quality systems. This role offers the opportunity for professional growth within a high-performing team culture. 

Our work culture at Affinidi is shaped by the following tenets:    

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data   

Further, Affinidi’s focus on the open source community, and collaboration with standards bodies to develop the next version of the internet – the Internet of Trust – guides every engineering and product decision we make. 

 What’s in it for you:  

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust. Experience in TypeScript and Dart will set you above other applicants for this role  
• Create standards-compliant world-class software systems and components, most of which will be open sourced as our commitment to the OSS and decentralised community 
• Contribute to architectural direction while staying hands-on with development 
• Help design and implement solutions to complex, large-scale technical challenges 
• Identify and drive the most critical improvements in product quality, security, and performance 
• Elevate engineering standards through your expertise, mentorship and commitment to best practices. 
• Guide the team to build well-tested, secure, and performant services 
• Collaborate closely with product, security, and engineering peers in a fast-paced, iterative environment 

   You will be a great match if you:   

• Proven experience with performance optimization and a track record of diagnosing and preventing system bottlenecks 
• Strong backend development skills with Rust as a core expertise 
• Deep knowledge of TypeScript/Node.js; Dart experience strongly preferred 
• Expertise in cloud computing (AWS) and cloud-native environments 
• Proven track record in developing distributed systems using modern design patterns 
• Skilled in technical documentation (C4 Model, ADRs) and clear communication of architectural decisions 
• Strong advocate for privacy by design, security-first principles, and high-performance systems 
• Experience with applying asynchronous cryptography in production-grade products 
• Experience with authorization/authentication domains; knowledge of identity, verifiable credentials, or secure data exchange is a strong plus 
• Comfortable thriving in autonomous, fast-moving startup environments and collaborating across global teams 

 Bonus points:   

• Experience working across functions, locations, and time zones 
• Expertise in decentralized identity solutions 
• Experience building systems with advanced cryptography requirements 

What can you expect from us:   

• Hybrid working model  
• Flexible working hours  
• Unlimited vacation policy  
• Competitive compensation package  
• Work within international environment  
• Learning Budget  
• Mobile Allowance  
• Home Office Allowance  
• Urban Sport Membership 

Sounds like you? Apply now!   

#LI-DS1

About the role:  

We are in search of a solution-oriented Senior Software Engineer (Backend) with demonstrable experience in Rust, to help guide the development of secure, scalable, and high-performance backend systems for the Affinidi Elements platform. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. Your responsibilities will include delivering a multi-component platform, leveraging your experience in helping to design and developing production-quality systems. This role offers the opportunity for professional growth within a high-performing team culture. 

Our work culture at Affinidi is shaped by the following tenets:    

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data   

Further, Affinidi’s focus on the open source community, and collaboration with standards bodies to develop the next version of the internet – the Internet of Trust – guides every engineering and product decision we make. 

 What’s in it for you:  

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust. Experience in TypeScript and Dart will set you above other applicants for this role  
• Create standards-compliant world-class software systems and components, most of which will be open sourced as our commitment to the OSS and decentralised community 
• Contribute to architectural direction while staying hands-on with development 
• Help design and implement solutions to complex, large-scale technical challenges 
• Identify and drive the most critical improvements in product quality, security, and performance 
• Elevate engineering standards through your expertise, mentorship and commitment to best practices. 
• Guide the team to build well-tested, secure, and performant services 
• Collaborate closely with product, security, and engineering peers in a fast-paced, iterative environment 

   You will be a great match if you:   

• Proven experience with performance optimization and a track record of diagnosing and preventing system bottlenecks 
• Strong backend development skills with Rust as a core expertise 
• Deep knowledge of TypeScript/Node.js; Dart experience strongly preferred 
• Expertise in cloud computing (AWS) and cloud-native environments 
• Proven track record in developing distributed systems using modern design patterns 
• Skilled in technical documentation (C4 Model, ADRs) and clear communication of architectural decisions 
• Strong advocate for privacy by design, security-first principles, and high-performance systems 
• Experience with applying asynchronous cryptography in production-grade products 
• Experience with authorization/authentication domains; knowledge of identity, verifiable credentials, or secure data exchange is a strong plus 
• Comfortable thriving in autonomous, fast-moving startup environments and collaborating across global teams 

 Bonus points:   

• Experience working across functions, locations, and time zones 
• Expertise in decentralized identity solutions 
• Experience building systems with advanced cryptography requirements 

What can you expect from us:   

• Hybrid working model  
• Flexible working hours  
• Unlimited vacation policy  
• Competitive compensation package  
• Work within international environment  
• Learning Budget  
• Mobile Allowance  
• Home Office Allowance  
• Urban Sport Membership 

Sounds like you? Apply now!   

#LI-DS1

About the role:  

We are in search of a solution-oriented Senior Software Engineer (Backend) with demonstrable experience in Rust, to help guide the development of secure, scalable, and high-performance backend systems for the Affinidi Elements platform. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. Your responsibilities will include delivering a multi-component platform, leveraging your experience in helping to design and developing production-quality systems. This role offers the opportunity for professional growth within a high-performing team culture. 

Our work culture at Affinidi is shaped by the following tenets:    

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data   

Further, Affinidi’s focus on the open source community, and collaboration with standards bodies to develop the next version of the internet – the Internet of Trust – guides every engineering and product decision we make. 

 What’s in it for you:  

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust. Experience in TypeScript and Dart will set you above other applicants for this role  
• Create standards-compliant world-class software systems and components, most of which will be open sourced as our commitment to the OSS and decentralised community 
• Contribute to architectural direction while staying hands-on with development 
• Help design and implement solutions to complex, large-scale technical challenges 
• Identify and drive the most critical improvements in product quality, security, and performance 
• Elevate engineering standards through your expertise, mentorship and commitment to best practices. 
• Guide the team to build well-tested, secure, and performant services 
• Collaborate closely with product, security, and engineering peers in a fast-paced, iterative environment 

   You will be a great match if you:   

• Proven experience with performance optimization and a track record of diagnosing and preventing system bottlenecks 
• Strong backend development skills with Rust as a core expertise 
• Deep knowledge of TypeScript/Node.js; Dart experience strongly preferred 
• Expertise in cloud computing (AWS) and cloud-native environments 
• Proven track record in developing distributed systems using modern design patterns 
• Skilled in technical documentation (C4 Model, ADRs) and clear communication of architectural decisions 
• Strong advocate for privacy by design, security-first principles, and high-performance systems 
• Experience with applying asynchronous cryptography in production-grade products 
• Experience with authorization/authentication domains; knowledge of identity, verifiable credentials, or secure data exchange is a strong plus 
• Comfortable thriving in autonomous, fast-moving startup environments and collaborating across global teams 

 Bonus points:   

• Experience working across functions, locations, and time zones 
• Expertise in decentralized identity solutions 
• Experience building systems with advanced cryptography requirements 

What can you expect from us:   

• Hybrid working model  
• Flexible working hours  
• Unlimited vacation policy  
• Competitive compensation package  
• Work within international environment  
• Learning Budget  
• Mobile Allowance  
• Home Office Allowance  
• Urban Sport Membership 

Sounds like you? Apply now!   

#LI-DS1

About the role:  

We are in search of a solution-oriented Senior Software Engineer (Backend) with demonstrable experience in Rust, to help guide the development of secure, scalable, and high-performance backend systems for the Affinidi Elements platform. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. Your responsibilities will include delivering a multi-component platform, leveraging your experience in helping to design and developing production-quality systems. This role offers the opportunity for professional growth within a high-performing team culture. 

Our work culture at Affinidi is shaped by the following tenets:    

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data   

Further, Affinidi’s focus on the open source community, and collaboration with standards bodies to develop the next version of the internet – the Internet of Trust – guides every engineering and product decision we make. 

 What’s in it for you:  

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust. Experience in TypeScript and Dart will set you above other applicants for this role  
• Create standards-compliant world-class software systems and components, most of which will be open sourced as our commitment to the OSS and decentralised community 
• Contribute to architectural direction while staying hands-on with development 
• Help design and implement solutions to complex, large-scale technical challenges 
• Identify and drive the most critical improvements in product quality, security, and performance 
• Elevate engineering standards through your expertise, mentorship and commitment to best practices. 
• Guide the team to build well-tested, secure, and performant services 
• Collaborate closely with product, security, and engineering peers in a fast-paced, iterative environment 

   You will be a great match if you:   

• Proven experience with performance optimization and a track record of diagnosing and preventing system bottlenecks 
• Strong backend development skills with Rust as a core expertise 
• Deep knowledge of TypeScript/Node.js; Dart experience strongly preferred 
• Expertise in cloud computing (AWS) and cloud-native environments 
• Proven track record in developing distributed systems using modern design patterns 
• Skilled in technical documentation (C4 Model, ADRs) and clear communication of architectural decisions 
• Strong advocate for privacy by design, security-first principles, and high-performance systems 
• Experience with applying asynchronous cryptography in production-grade products 
• Experience with authorization/authentication domains; knowledge of identity, verifiable credentials, or secure data exchange is a strong plus 
• Comfortable thriving in autonomous, fast-moving startup environments and collaborating across global teams 

 Bonus points:   

• Experience working across functions, locations, and time zones 
• Expertise in decentralized identity solutions 
• Experience building systems with advanced cryptography requirements 

What can you expect from us:   

• Hybrid working model  
• Flexible working hours  
• Unlimited vacation policy  
• Competitive compensation package  
• Work within international environment  
• Learning Budget  
• Mobile Allowance  
• Home Office Allowance  
• Urban Sport Membership 

Sounds like you? Apply now!   

#LI-DS1

About the role:  

We are in search of a solution-oriented Senior Software Engineer (Backend) with demonstrable experience in Rust, to help guide the development of secure, scalable, and high-performance backend systems for the Affinidi Elements platform. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. Your responsibilities will include delivering a multi-component platform, leveraging your experience in helping to design and developing production-quality systems. This role offers the opportunity for professional growth within a high-performing team culture. 

Our work culture at Affinidi is shaped by the following tenets:    

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data   

Further, Affinidi’s focus on the open source community, and collaboration with standards bodies to develop the next version of the internet – the Internet of Trust – guides every engineering and product decision we make. 

 What’s in it for you:  

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust. Experience in TypeScript and Dart will set you above other applicants for this role  
• Create standards-compliant world-class software systems and components, most of which will be open sourced as our commitment to the OSS and decentralised community 
• Contribute to architectural direction while staying hands-on with development 
• Help design and implement solutions to complex, large-scale technical challenges 
• Identify and drive the most critical improvements in product quality, security, and performance 
• Elevate engineering standards through your expertise, mentorship and commitment to best practices. 
• Guide the team to build well-tested, secure, and performant services 
• Collaborate closely with product, security, and engineering peers in a fast-paced, iterative environment 

   You will be a great match if you:   

• Proven experience with performance optimization and a track record of diagnosing and preventing system bottlenecks 
• Strong backend development skills with Rust as a core expertise 
• Deep knowledge of TypeScript/Node.js; Dart experience strongly preferred 
• Expertise in cloud computing (AWS) and cloud-native environments 
• Proven track record in developing distributed systems using modern design patterns 
• Skilled in technical documentation (C4 Model, ADRs) and clear communication of architectural decisions 
• Strong advocate for privacy by design, security-first principles, and high-performance systems 
• Experience with applying asynchronous cryptography in production-grade products 
• Experience with authorization/authentication domains; knowledge of identity, verifiable credentials, or secure data exchange is a strong plus 
• Comfortable thriving in autonomous, fast-moving startup environments and collaborating across global teams 

 Bonus points:   

• Experience working across functions, locations, and time zones 
• Expertise in decentralized identity solutions 
• Experience building systems with advanced cryptography requirements 

What can you expect from us:   

• Hybrid working model  
• Flexible working hours  
• Unlimited vacation policy  
• Competitive compensation package  
• Work within international environment  
• Learning Budget  
• Mobile Allowance  
• Home Office Allowance  
• Urban Sport Membership 

Sounds like you? Apply now!   

#LI-DS1

About the role:  

We are in search of a solution-oriented Senior Software Engineer (Backend) with demonstrable experience in Rust, to help guide the development of secure, scalable, and high-performance backend systems for the Affinidi Elements platform. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. Your responsibilities will include delivering a multi-component platform, leveraging your experience in helping to design and developing production-quality systems. This role offers the opportunity for professional growth within a high-performing team culture. 

Our work culture at Affinidi is shaped by the following tenets:    

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data   

Further, Affinidi’s focus on the open source community, and collaboration with standards bodies to develop the next version of the internet – the Internet of Trust – guides every engineering and product decision we make. 

 What’s in it for you:  

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust. Experience in TypeScript and Dart will set you above other applicants for this role  
• Create standards-compliant world-class software systems and components, most of which will be open sourced as our commitment to the OSS and decentralised community 
• Contribute to architectural direction while staying hands-on with development 
• Help design and implement solutions to complex, large-scale technical challenges 
• Identify and drive the most critical improvements in product quality, security, and performance 
• Elevate engineering standards through your expertise, mentorship and commitment to best practices. 
• Guide the team to build well-tested, secure, and performant services 
• Collaborate closely with product, security, and engineering peers in a fast-paced, iterative environment 

   You will be a great match if you:   

• Proven experience with performance optimization and a track record of diagnosing and preventing system bottlenecks 
• Strong backend development skills with Rust as a core expertise 
• Deep knowledge of TypeScript/Node.js; Dart experience strongly preferred 
• Expertise in cloud computing (AWS) and cloud-native environments 
• Proven track record in developing distributed systems using modern design patterns 
• Skilled in technical documentation (C4 Model, ADRs) and clear communication of architectural decisions 
• Strong advocate for privacy by design, security-first principles, and high-performance systems 
• Experience with applying asynchronous cryptography in production-grade products 
• Experience with authorization/authentication domains; knowledge of identity, verifiable credentials, or secure data exchange is a strong plus 
• Comfortable thriving in autonomous, fast-moving startup environments and collaborating across global teams 

 Bonus points:   

• Experience working across functions, locations, and time zones 
• Expertise in decentralized identity solutions 
• Experience building systems with advanced cryptography requirements 

What can you expect from us:   

• Hybrid working model  
• Flexible working hours  
• Unlimited vacation policy  
• Competitive compensation package  
• Work within international environment  
• Learning Budget  
• Mobile Allowance  
• Home Office Allowance  
• Urban Sport Membership 

Sounds like you? Apply now!   

#LI-DS1

LLM Platform Engineer/Lead (m/f/d)

Berlin, Bangalore, Remote

Hello 👋 I am Servesh, Co- founder and CTO at Kayzen, and I am now looking for a LLM Platform Engineer/Lead who will be part of our Engineering team. 🙌 But wait, you have not heard of Kayzen before? 😃

Kayzen is a mobile demand-side platform (DSP) dedicated to democratizing programmatic advertising. We enable leading apps, agencies, media buyers, and brands to run programmatic customer acquisition, retargeting, and brand performance campaigns through its self-serve and managed service options. Built on the three core pillars of performance, transparency, and control, Kayzen powers the world’s best mobile marketing teams with bespoke solutions that fuel business growth and deliver a competitive advantage. With an unprecedented scale of 160B+ daily ad requests from 1.6B+ unique users worldwide, we serve up to 1B+ ads per day in 180 countries. Kayzen is accessible through our APIs and user interface.

The Team

The Platform Engineering team owns Real-time bidding (RTB) platform, a Real-time budget system, Real-time event processing, Stream data processing engine and multiple other complex large-scale distributed components and data pipelines. We work closely with data scientists, data analysts, product and business teams. We are responsible for some of the most technically challenging work, for example:

• Handling ~2 Million Req/sec in sub-millisecond latency
• Handing & managing ~Petabytes of data
• Managing distributed systems deployed across multiple data centers
• Optimizing JVM and Linux kernel for optimal performance
• Managing our own data center spread across the globe consisting of thousand of powerful servers
• Working on some of the most challenging problems of Ad-Tech

Sounds interesting. Isn't it?

About the Role

We are looking for an  LLM Platform Engineer  /Lead who can  evangelise AI across the company  and build the  foundational tooling, frameworks, and workflows  that allow teams to ship AI-powered features quickly and safely. This role is ideal for an engineer who understands modern AI capabilities and focuses on  developer velocity, reuse, and production readiness  rather than training complex models from scratch.

Responsibilities

• Design and build  internal AI frameworks, SDKs, and shared libraries 
• Enable teams to integrate AI features with minimal friction
• Set up  standardized patterns  for using LLMs, embeddings, agents, and workflows
• Build reusable components for  prompt management, evaluation, observability, and safety 
• Define best practices for  AI usage, cost control, and reliability 
• Evangelise AI internally through documentation, examples, and hands-on guidance
• Rapidly prototype AI-powered features and turn them into reusable building blocks
• Own AI tooling from experimentation to production

Requirements

AI Tooling & Framework Experience (Core Focus) 

• Hands-on experience with  LLM APIs  (OpenAI, Anthropic, etc.)
• Experience with  RAG pipelines, embeddings, vector databases 
• Familiarity with  prompt engineering, prompt versioning, and evaluation 
• Experience with  AI orchestration frameworks 
• Understanding of  AI observability, cost monitoring, and failure modes
• You’ve shipped at least one LLM-powered feature to production and iterated based on telemetry or user feedback.
• Comfortable with embeddings, fine-tuning, vector search, tokenization, and evaluation methodologies.
• Familiar with data lakes/warehouses, feature stores, and streaming/batch ETL; cloud (AWS/GCP/Azure).

Strong Engineering & Platform Skills 

• Excellent  Python  skills (required)
• Experience building  frameworks, platforms, or developer tooling 
• Strong understanding of  APIs, services, and system design 
• Writes clean, maintainable, production-grade code

Startup Mindset

• Bias for shipping and iteration
• Can translate AI complexity into simple abstractions
• Comfortable with ambiguity and rapid change
• Thinks in terms of  leverage and reuse , not one-off solutions

Less About

• Heavy model training or research
• Designing custom ML algorithms
• Academic optimization work.

Nice to have

• Experience with  agent-based systems  and tool calling
• Experience setting up  guardrails, moderation, and safety checks 
• Familiarity with  Docker, cloud infra, and CI/CD 
• Prior work in  platform teams or enablement roles

What do we offer?

• Reporting directly to Co-founder & CTO
• Direct access to top management and an extremely “visible” role
• Exceptional career growth and learning opportunity
• A unique opportunity to be part of an experienced team of industry experts and entrepreneurs who bring massive change to the Adtech market
• A fun, driven, and multinational team located across Germany, India, UK, Argentina, Ukraine, Turkey, Spain  and many more countries
• A flexible work-from-home arrangement
• A 500-dollar home-office setup budget
• A 1000-dollar annual learning and development budget

DevOps Engineer (m/f/d)

Bangalore, Remote India

Hello 👋 I am Servesh, Co- founder and CTO at Kayzen, and I am now looking for a DevOps Engineer who will be part of our Engineering team. 🙌 But wait, you have not heard of Kayzen before? 😃

Kayzen is a mobile demand-side platform (DSP) dedicated to democratizing programmatic advertising. We enable leading apps, agencies, media buyers, and brands to run programmatic customer acquisition, retargeting, and brand performance campaigns through its self-serve and managed service options. Built on the three core pillars of performance, transparency, and control, Kayzen powers the world’s best mobile marketing teams with bespoke solutions that fuel business growth and deliver a competitive advantage. With an unprecedented scale of 160B+ daily ad requests from 1.6B+ unique users worldwide, we serve up to 1B+ ads per day in 180 countries. Kayzen is accessible through our APIs and user interface.

The Team

The Platform Engineering team owns Real-time bidding (RTB) platform, a Real-time budget system, Real-time event processing, Stream data processing engine and multiple other complex large-scale distributed components and data pipelines. We work closely with data scientists, data analysts, product and business teams. We are responsible for some of the most technically challenging work, for example:

• Handling ~2 Million Req/sec in sub-millisecond latency
• Handing & managing ~Petabytes of data
• Managing distributed systems deployed across multiple data centers
• Optimizing JVM and Linux kernel for optimal performance
• Managing our own data center spread across the globe consisting of thousand of powerful servers
• Working on some of the most challenging problems of Ad-Tech

Sounds interesting. Isn't it?

About the Role

We are looking for a DevOps Engineer to build and scale the backbone of our global RTB platform. You will move beyond manual server management to engineer automated, self-healing infrastructure that handles petabytes of data with sub-millisecond latency. This role is about treating our private data centers like a programmable cloud.

Responsibilities

- Engineering and Provisioning -

• Develop and maintain automated provisioning pipelines (PXE, ZTP) to deploy bare-metal servers ( configure hardware, peripherals, services, settings, directories, storage, etc. in accordance with standards and project/operational requirements) at scale across global data centers.
• You research and recommend innovative and automated approaches for system administration tasks.

- Operations and Support -

• You perform regular security monitoring to identify any possible intrusions.
• You repair and recover from hardware or software failures, coordinating with impacted teams.

- Maintenance -

• You apply OS patches and upgrades on a regular basis, and upgrade administrative tools and utilities.
• You maintain data center environmental and monitoring equipment.
• You perform ongoing performance tuning, hardware upgrades, and resource optimization as required.

Requirements

• You are flexible to work in rotational shifts as part of the incidence response team.
• You have a Bachelor degree, with a technical major, such as engineering or computer science.
• You have good knowledge of coding with Shell and Python/Java and SQL commands.
• Hands-on experience with Terraform or Ansible or Puppet/Chef for managing bare-metal configurations and automations.
• Strong understanding of L4/L7 load balancing (HAProxy/Nginx) and network performance tuning (TCP/IP stack optimization).
• You have 8+ years of system administration/debugging experience, scripting and related tools.
• You have good knowledge on pipeline/orchestration tools like Jenkins/Ariflow and similar platforms  as mandatory. 
• You have good knowledge on Observability platform experience (Prometheus, Grafana, InfluxDB) as mandatory
• You have good knowledge of Kubernetes will be an added advantage.
• You have systems Administration/System Engineer certification in Unix will be an added advantage.

What do we offer?

• Reporting directly to Co-founder & CTO
• Direct access to top management and an extremely “visible” role
• Exceptional career growth and learning opportunity
• A unique opportunity to be part of an experienced team of industry experts and entrepreneurs who bring massive change to the Adtech market
• A fun, driven, and multinational team located across Germany, India, UK, Argentina, Ukraine, Turkey, Spain  and many more countries
• A flexible work-from-home arrangement
• A 500-dollar home-office setup budget
• A 1000-dollar annual learning and development budget

At JetBrains, code is our passion. Ever since we started, back in 2000, we have strived to make the strongest, most effective developer tools on earth. By automating routine checks and corrections, our tools speed up production, freeing developers to grow, discover, and create.

We’re looking for a Customer Success Engineer (CSE) to help engineering teams successfully adopt Kotlin Multiplatform (KMP) in real-world production environments.

Role description:

This role focuses on supporting organizations throughout their Kotlin Multiplatform (KMP) adoption journey, from initial evaluation to successful production rollout, while also contributing to product improvements and the roadmap, with focus on KMP adoption, evaluation, feedback and advocacy.  

• Engage with organizations at various stages of KMP adoption within existing projects.
• Support teams through migration, integration, and scaling of shared codebases.
• Help teams overcome technical blockers and successfully move from experimentation to production use.
• Proactively engage with prospective users who may benefit from KMP.
• Understand customer use cases, technical constraints, and adoption challenges.
• Provide practical guidance on feasibility, architecture decisions, and adoption strategies.
• Gather structured feedback, insights, and pain points from customers.
• Collaborate with product and engineering teams to influence the KMP roadmap and tooling improvements.

Example of the questions you'll help organizations answer:

• What’s the safest way to migrate a large Android app to shared logic?
• How much should we actually share?
• Our iOS team struggles with Kotlin APIs and pushes back. How do we address this?
• How do we organize the codebase for better cross-team collaboration?
• We added KMP, but builds became painfully slow. How do we fix that?

What success will look like:

• Organizations successfully adopt and ship Kotlin Multiplatform in production.
• Shared code usage expands over time across teams.
• Adoption continues beyond the initial evaluation phase.
• Tangible improvements are made to the KMP product and tooling, driven by user feedback.

We will be happy to have you on our team if you have:

• Strong experience with Kotlin (Android or backend).
• A solid understanding of mobile architectures across Android and iOS.
• Excellent communication and stakeholder management skills, with the ability to engage, influence, and build trust with senior engineers, tech leads, and business stakeholders.
• The ability to clearly explain complex technical concepts to diverse audiences, adapting depth and messaging as needed.
• Experience leading customer conversations, facilitating discussions, and aligning cross-functional teams.
• A proactive and empathetic approach to understanding customer needs, challenges, and goals.
• The willingness to travel up to 25% of the time.

Nice to have:

• Hands-on experience with Kotlin Multiplatform.
• Experience migrating or modernizing legacy and large-scale codebases.
• A  background in customer success, solutions architecture, or similar customer-facing roles.

Why join JetBrains? 

• Strong base salary. We offer competitive pay that reflects your skills and experience.
• Flexible work location. Enjoy the freedom to work from home or from the office.
• Remote work. Spend up to 30 days per year working remotely from abroad.
• Extra time off. More days to relax, recharge, and do the things you love.
• Medical insurance allowance. Enjoy peace of mind for you and your family
• Learning and development opportunities. Access to conferences, courses, and language classes.
• Relocation support. We help make your move as smooth and stress-free as possible. (keep if relevant for the role)
• Language classes. Pick up the local language or sharpen your English skills.
• Fuel your day. Enjoy a hot meal or receive a lunch allowance on workdays.
• Mental health support. To help you feel your best, we provide easy access to professional mental health services.
• Sports benefit. Enjoy an on-site gym or sports club stipend.
• Internal events. Join company-wide celebrations and team gatherings.

*Some benefits may vary depending on location.

#LI-HYBRID
#LI-REMOTE 
#LI-JP1

Team

The Investment and Pension Products (IPP) tribe at Raisin builds Raisin’s capital markets–based products, enabling customers to grow their wealth with confidence. We take complex, highly regulated financial systems and turn them into easy, transparent, and scalable product experiences. This is core to Raisin’s mission, given the central role these product lines play in Raisin becoming the home for our customers’ wealth.

As part of the IPP tribe, we are building a new cross-functional engineering team focused on the further internationalisation of Raisin’s investment products. The team owns the design, development, and operation of its services end-to-end, following a “you build it, you run it” mindset. This includes responsibility for system reliability, scalability, and continuous improvement in close collaboration with Product, Risk, and other stakeholders.

Your Team’s Stack

• Backend: Java (Sprint Boot), MySQL, Kafka, AWS
• Web: TypeScript, ReactJS
• Mobile: TypeScript, React Native

Your Responsibilities

• Delight customers and internal stakeholders by building and maintaining high-quality customer-facing platforms and internal tools.
• Own the design, implementation, testing, deployment, and ongoing refinement of applications and services end to end.
• Guide features through the full lifecycle—from discovery and implementation to testing, iteration, and successful launch.
• Write clean, maintainable, secure, and well-tested code with a strong quality mindset (unit, integration, component, and contract testing where applicable).
• Collaborate closely with Product, UX, Risk, and other stakeholders to translate complex domain requirements into practical, efficient, secure, and compliant solutions.
• Actively participate in architecture discussions and contribute to defining technical standards, guidelines, and best practices.
• Continuously improve engineering processes, CI/CD pipelines, automation, and overall operational readiness to enhance developer productivity.
• Work in an agile, cross-functional team with end-to-end ownership and a strong sense of accountability.
• Use AI tools productively and responsibly to accelerate delivery and improve quality.
• Foster an inclusive and collaborative team culture through knowledge sharing, constructive feedback, mentoring, and pairing.
• Contribute to an environment of open communication, trust, and continuous improvement, taking responsibility for personal growth as well as the growth of the team.

Your Profile

• University degree in Computer Science, Engineering, Information Systems, or a related field — or equivalent practical experience
• Professional experience as a Software Engineer
• Comfortable participating in technical and architectural discussions
• Strong understanding of business requirements and the ability to translate them into suitable technical solutions
• Experience working in agile environments with CI/CD practices
• Commitment to writing clean, well-tested, maintainable, and well-documented code
• Open-minded, creative team player who actively contributes to team culture
• Strong English communication skills (German is a plus, not mandatory)
• Strong professional experience with Java
• Experience designing and developing microservices-based architectures
• Hands-on experience working with AWS Cloud
• Strong understanding of distributed systems and service-oriented architectures
• Deep commitment to clean architecture principles and high code quality standards

Join our mission, join our team – and grow with us!

At Raisin, we care about each other and it is one of our top priorities to foster an open and caring environment in which everyone feels welcome and comfortable. Our culture is strongly driven by our ambitious team, which connects more than 75 different nationalities.

As part of our team, you will benefit from

• Employee Development Budget of €2,000 and four full training days per year.
• Flexible working hours, home office and 30 vacation days.
• A company pension scheme (Betriebliche Altersvorsorge), which we support with 20%.
• Enjoy more than 50+ different sports with Urban Sports Club: We subsidize your membership with more than €20 per month. 
• Do you miss being in the office? The Deutschland Ticket gets you there, which we subsidize with €25 per month.
• Love cycling? With JobRad, lease the bike of your choice and enjoy tax savings, plus Raisin covers your monthly insurance costs.
• Hungry all the time? Snacks, daily fresh fruit as well as drinks provided at the office.
• You are moving from another city to join us? We may support your relocation.

Team

The team is part of the “Base Tribe”, which consists of four teams that collaborate closely on the mission: to deliver core functionalities that enable seamless access and interaction with our financial products for customers and internal teams:

As a cross-functional team consisting of web, mobile, backend engineers, the RX Tooling team builds, runs and maintains six microservices written in Python. The team owns the KYC (Know Your Customer) domain, which is responsible for the fast, reliable and secure customer legitimation via integration with external KYC vendors. 

The team owns the whole lifecycle from design and development through maintenance of the services at runtime. The team is responsible for the 24/7 runtime support of their services.

Your Team’s Stack

• Backend: Python (FastAPI), MySQL, Kafka, AWS
• Web: TypeScript, ReactJS
• Mobile: TypeScript, React Native

This is not a purely managerial role. You will actively contribute to code, guide technical decisions, and foster engineering excellence, while ensuring reliable delivery and 24/7 operational readiness of your team’s services.

Your Responsibilities

• You are responsible for the full E2E delivery cycle, from requirements analysis, and effort estimation through design, implementation, QA, delivery, and support.
• You nurture an inspiring environment with open communication and a culture of trust.
• Champion in writing clean, maintainable, and efficient code across the team’s tech stack - Python - adhering to best practices in software development. Implement new features and maintain existing codebases to ensure high performance and availability.
• You proactively resolve impediments and mitigate risks for your team.
• In case you need to escalate delivery and team risks, you do this in a timely fashion, with a well-articulated solution/mitigation plan.
• You collaborate closely with your team’s Product Manager.
• You facilitate the team’s work on strategy and planning for the delivery.
• With the Product Manager, you drive the OKR process for your team: communication of objectives, Key result definition, team commitment, and pairing OKRs with individual target agreements for your engineers.
• You recruit, hire, and onboard engineers into the team.
• You develop your engineers’ soft- and technical skill sets according to the company’s goals and needs.
• You craft agreements and individual development plans with every team member, aligned to the team's goals.
• You uncover training opportunities as well as provide coaching for your team.
• You recognize high performance and reward accomplishments; you act on low performance in a timely manner. 
• You establish and keep strong performance standards for your direct reports.

Your Profile

• You have a university degree in Computer Science, Engineering, Information Systems, or related fields or equivalent practical experience.
• You bring at least 2 years of leadership/people management experience in a remote setup and have a strong focus on delivery. 
• You have hands-on experience in technical platform transitions within a company.
• You have strong hands-on experience (min. 8 years) as a Backend Software Engineer and want to stay one of the main contributors to your team.
• You know how to manage software projects to a successful delivery in a collaborative fashion.
• You have up-to-date, in-depth knowledge of the software development lifecycle in modern Frontend and Backend . 
• You need to feel comfortable with Python technologies.
• You are comfortable with architecture discussions.
• You bring experience with AWS Services, K8S, and Event-Driven architectures.
• Prior exposure to the KYC domain is a strong plus.
• Very good communication skills; Fluency in English; German-language skills are a plus but not mandatory.

Join our mission, join our team – and growth with us!

At Raisin, we care about each other and it is one of our top priorities to foster an open and caring environment in which everyone feels welcome and comfortable. Our culture is strongly driven by our ambitious team, which connects more than 75 different nationalities.

As part of our team, you will benefit from:

• Employee Development Budget of €2,000 and four full training days per year.
• Flexible working hours, home office and 30 vacation days.
• A company pension scheme (Betriebliche Altersvorsorge), which we support with 20%.
• Enjoy more than 50+ different sports with Urban Sports Club: We subsidize your membership with more than €20 per month. 
• Do you miss being in the office? The Deutschland Ticket gets you there, which we subsidize with €25 per month.
• Love cycling? With JobRad, lease the bike of your choice and enjoy tax savings, plus Raisin covers your monthly insurance costs.
• Hungry all the time? Snacks, daily fresh fruit as well as drinks provided at the office.
• You are moving from another country or city to join us? We may support your relocation.

Team

For further development and expansion of our banking and investments platform, Raisin is looking for an Engineering Lead with a strong software engineering background in Frontend and Mobile area, who seeks an opportunity to lead efforts that help other engineers solve complex problems using Cloud technologies and Platform Engineering practices.

Our Frontend & Mobile Platform team partners closely with our product development teams to accelerate software development lifecycle across all customer-facing applications, while ensuring high level of quality and security. We provide frameworks, tooling, and guidance that empower teams to build, test, and ship performant, secure, and accessible web and mobile apps efficiently. As a team lead, you will be responsible for driving the adoption of modern technologies and best practices that shape the vision of our Internal Developer Platform for client-side development. You will lead initiatives that improve developer productivity, standardize architecture, optimize CI/CD pipelines for web and mobile delivery, and ensure that our teams can confidently deliver seamless experiences to our users.

The team is mostly based in Berlin, so we are looking for a candidate with experience in leading hybrid teams, who is willing to work partially onsite from our Berlin office.

Teck Stack

Your Responsibilities

• You are responsible for the full E2E delivery cycle of web and mobile applications: from requirements analysis, and effort estimation, through design, implementation, QA, and delivery.
• You nurture an inspiring environment with open communication and a culture of trust.
• You proactively resolve impediments and mitigate risks for your team.
• In case you need to escalate delivery and team risks, you do this in a timely fashion, with a well-articulated solution/mitigation plan.
• You collaborate closely with your team’s Tech Lead.
• You facilitate the team’s work on strategy and planning for the delivery.
• You drive the OKR process for your team: communication of objectives, key result definition, team commitment, and pairing OKRs with individual target agreements for your engineers.
• You hire, and onboard engineers into the team.
• You develop both your engineers’ soft- and technical skill sets according to the company’s goals and needs.
• You craft agreements and individual development plans with every team member, aligned to the team's goals.
• You uncover training opportunities as well as provide coaching for your team.
• You recognise high performance and reward accomplishments; you act on low performance in a timely manner.
• You establish and keep strong performance standards for your direct reports.

Your Profile

• You hold a university degree in Computer Science, Engineering, Information Systems, or related fields, or possess equivalent practical experience.
• You bring 2+ years of leadership/people management experience and have a strong focus on delivery.
• You demonstrate hands-on experience in introducing and scaling Internal Development Platform for client-side development within a company.
• You have 5+ years hands-on experience as a Frontend or Mobile Engineer and want to stay one of the key contributors on your team (TypeScript, React, React Native, Next.js).
• You can demonstrate your professional expertise in building, deploying, and operating web applications on Cloud services (AWS CloudFront/S3, Netlify, Vercel).
• You know how to manage complex and cross-team software projects to a successful delivery in a collaborative fashion.
• You possess up-to-date, in-depth knowledge of modern DevOps and DevEx practices for Frontend and Mobile development, including hands-on experience with CI/CD tools, mobile build automation, as well as Terraform relevant for customer-facing infrastructure.
• You feel comfortable and confident driving technical and architectural discussions.
• Your track record showcases experience in working with RESTful and GraphQL APIs, BFF layer, content and translation management systems, feature flags.
• Your English communication skills are very good.
• You have 1+ year of experience leading distributed/remote/hybrid teams.

Join our mission, join our team – and grow with us!

At Raisin, we care about each other and it is one of our top priorities to foster an open and caring environment in which everyone feels welcome and comfortable. Our culture is strongly driven by our ambitious team, which connects more than 75 different nationalities.

As part of our team, you will benefit from:

• Employee Development Budget of €2,000 and four full training days per year.
• Flexible working hours, home office and 30 vacation days.
• A company pension scheme (Betriebliche Altersvorsorge), which we support with 20%.
• Enjoy more than 50+ different sports with Urban Sports Club: We subsidize your membership with more than €20 per month. 
• Do you miss being in the office? The Deutschland Ticket gets you there, which we subsidize with €25 per month.
• Love cycling? With JobRad, lease the bike of your choice and enjoy tax savings, plus Raisin covers your monthly insurance costs.
• Hungry all the time? Snacks, daily fresh fruit as well as drinks provided at the office.
• You are moving from another country or city to join us? We may support your relocation.

Team

For further development and expansion of our successful business, Raisin is looking for highly motivated, smart, and driven engineers to complement our team in Berlin. As a Mobile Platform Engineer, you will work alongside our development teams to ensure a highly automated software development life-cycle, as well as enable them to deploy our two React Native apps for the European and U.S. markets. As part of the Tech Platform tribe, you will work with cutting-edge technologies and initiatives that shape the vision of our Frontend & Mobile Platform, reducing bottlenecks, deepening domain expertise, and accelerating the delivery of mobile-first features.

We are looking for someone with a strong software engineering experience, who seeks an opportunity to help other engineers solve complex problems using Platform Engineering practices. You will take full ownership of your work, from proposal to implementation, and are expected to challenge the status quo as a key work and culture component.

Your Responsibilities

• As an experienced Mobile Engineer, you will be providing a significant impact on our customers’ experience with Raisin product by optimizing Mobile applications for performance and scalability
• You will drive internal platform efforts, improving development tools and Mobile application ecosystem according to modern principles
• You will research, assess, develop and maintain new technology solutions for our Mobile platform
• You will provide stable automated solutions for our internal customers to speed up Mobile application testing and delivery
• Nurture teams to strive for test automation and quality assurance throughout the development process
• You will own, maintain and continuously evolve a large-scale Mobile monorepo, ensuring its scalability, reliability and long-term sustainability
• You will own, optimise and scale the shared CI pipeline, improving build performance, stability and developer productivity across teams
• Act as a “Mobile First Aid” point of contact, proactively unblocking engineers on platform and build-related issues
• You will continuously enhance the developer experience by streamlining workflows, reducing friction and introducing improvements across the Mobile toolchain
• Drive architectural decisions together with the team, shaping the evolution of the Mobile platform in alignment with engineering standards and long-term strategy

Your Profile

• You hold a university degree in Computer Science or related fields or equivalent practical experience
• You bring 3+ years of experience as a React Native developer, with a strong record of delivering high-quality, performant mobile applications for iOS and Android platforms
• You can demonstrate proficiency with React Native, React Hooks, Redux, React Navigation, and TypeScript, with the ability to build scalable, maintainable codebases
• You show strong knowledge and experience in managing monorepos and related challenges with the tools like Nx or similar
• You have a hands-on experience with integration, testing, code signing, and deploying apps through app stores, and familiar with CI/CD pipelines like GitLab, Fastlane, and Expo EAS
• You show a strong experience working with RESTful APIs and GraphQL, as well as integrating third-party SDKs and libraries into mobile applications
• You are an expert with tools like Datadog or Firebase Crashlytics to monitor performance and debug production issues
• You have a strong understanding of mobile app security, including secure authentication (OAuth, JWT), encryption, and data privacy compliance
• You have a knowledge of creating and managing native modules for iOS and Android to enable seamless interaction between Native and React Native components
• You have a strong passion for testing and familiar with E2E testing tooling like Maestro
• You feel comfortable and confident driving on participating in technical and architectural discussions
• You are an open-minded and creative team player who is eager to contribute to the ongoing improvement of our technology and culture
• You have great communication skills in English

Join our mission, join our team – and grow with us!

At Raisin, we care about each other and it is one of our top priorities to foster an open and caring environment in which everyone feels welcome and comfortable. Our culture is strongly driven by our ambitious team, which connects more than 75 different nationalities.

As part of our team, you will benefit from:

• Employee Development Budget of €2,000 and four full training days per year.
• Flexible working hours, home office and 30 vacation days.
• A company pension scheme (Betriebliche Altersvorsorge), which we support with 20%.
• Enjoy more than 50+ different sports with Urban Sports Club: We subsidize your membership with more than €20 per month. 
• Do you miss being in the office? The Deutschland Ticket gets you there, which we subsidize with €25 per month.
• Love cycling? With JobRad, lease the bike of your choice and enjoy tax savings, plus Raisin covers your monthly insurance costs.
• Hungry all the time? Snacks, daily fresh fruit as well as drinks provided at the office.
• You are moving from another country or city to join us? We may support your relocation.

Team

The Investment and Pension Products (IPP) tribe at Raisin builds Raisin’s capital markets–based products, enabling customers to grow their wealth with confidence. We take complex, highly regulated financial systems and turn them into easy, transparent, and scalable product experiences. This is core to Raisin’s mission, given the central role these product lines play in Raisin becoming the home for our customers’ wealth.

As part of the IPP tribe, we are building a new cross-functional engineering team focused on the further internationalisation of Raisin’s investment products. The team owns the design, development, and operation of its services end-to-end, following a “you build it, you run it” mindset. This includes responsibility for system reliability, scalability, and continuous improvement in close collaboration with Product, Risk, and other stakeholders.

Your Team’s Stack

• Backend: Java (Sprint Boot), MySQL, Kafka, AWS
• Web: TypeScript, ReactJS
• Mobile: TypeScript, React Native

Your Responsibilities

• Delight customers and internal stakeholders by building and maintaining high-quality customer-facing platforms and internal tools.
• Own the design, implementation, testing, deployment, and ongoing refinement of applications and services end to end.
• Guide features through the full lifecycle—from discovery and implementation to testing, iteration, and successful launch.
• Write clean, maintainable, secure, and well-tested code with a strong quality mindset (unit, integration, component, and contract testing where applicable).
• Collaborate closely with Product, UX, Risk, and other stakeholders to translate complex domain requirements into practical, efficient, secure, and compliant solutions.
• Actively participate in architecture discussions and contribute to defining technical standards, guidelines, and best practices.
• Continuously improve engineering processes, CI/CD pipelines, automation, and overall operational readiness to enhance developer productivity.
• Work in an agile, cross-functional team with end-to-end ownership and a strong sense of accountability.
• Use AI tools productively and responsibly to accelerate delivery and improve quality.
• Foster an inclusive and collaborative team culture through knowledge sharing, constructive feedback, mentoring, and pairing.
• Contribute to an environment of open communication, trust, and continuous improvement, taking responsibility for personal growth as well as the growth of the team.

Your Profile

• University degree in Computer Science, Engineering, Information Systems, or a related field — or equivalent practical experience
• Professional experience as a Software Engineer
• Comfortable participating in technical and architectural discussions
• Strong understanding of business requirements and the ability to translate them into suitable technical solutions
• Experience working in agile environments with CI/CD practices
• Commitment to writing clean, well-tested, maintainable, and well-documented code
• Open-minded, creative team player who actively contributes to team culture
• Strong English communication skills (German is a plus, not mandatory)
• Strong proficiency in TypeScript, JavaScript, HTML, and CSS
• Strong experience with React or similar modern frameworks/libraries
• Experience with Next.js, Static Site Generators, JAMstack architectures, and (headless) CMS solutions is a plus
• Familiarity with component libraries such as Material-UI or similar design systems
• Focus on building performant, accessible, and user-centric web applications

Join our mission, join our team – and grow with us!

At Raisin, we care about each other and it is one of our top priorities to foster an open and caring environment in which everyone feels welcome and comfortable. Our culture is strongly driven by our ambitious team, which connects more than 75 different nationalities.

As part of our team, you will benefit from:

• Employee Development Budget of €2,000 and four full training days per year.
• Flexible working hours, home office and 30 vacation days.
• A company pension scheme (Betriebliche Altersvorsorge), which we support with 20%.
• Enjoy more than 50+ different sports with Urban Sports Club: We subsidize your membership with more than €20 per month. 
• Do you miss being in the office? The Deutschland Ticket gets you there, which we subsidize with €25 per month.
• Love cycling? With JobRad, lease the bike of your choice and enjoy tax savings, plus Raisin covers your monthly insurance costs.
• Hungry all the time? Snacks, daily fresh fruit as well as drinks provided at the office.
• You are moving from another city to join us? We may support your relocation.

Your Impact

We are looking for a Software Engineer to join the Identity and Access Management team.

Join our new team dedicated to authentication and user rights management. As a Software Engineer, you will play a key role in leading the gold standard for access control on Doctolib's platform. Help protect sensitive user and financial data while enabling seamless workflows for healthcare professionals. Working in the tech team at Doctolib means building innovative products and features to improve the daily lives of care teams and patients.

What you'll do

Your responsibilities include but are not limited to:

• Develop and maintain secure authentication and authorization services that scale across millions of users
• Design and build modern OIDC authentication flows on Keycloak that handle security-critical traffic across Doctolib's platform
•  Lead large-scale migrations of authentication journeys to the new IAM stack, ensuring zero-downtime rollouts and measurable improvements in scalability, security, and developer experience 
• Build high-performance backend features using Java/Kotlin and Springboot, working with event-driven architectures (Kafka)
• Collaborate with product managers, designers, and engineers across teams to deliver secure, user-first solutions
• Contribute to frontend implementations using React (TypeScript/JavaScript) to create seamless user experiences
• Bring your expertise to continuously improve our engineering practices, code quality, and system reliability.

Who you are

Before you read on: if you don't have the exact profile described below, but you feel this job description matches your skill set, we still encourage you to apply.

You'll be a great fit if you:

• You have at least 4+ years of software engineering experience as a developer
• You have strong backend development skills with Java or Kotlin and experience with distributed systems
• You are willing to learn and work with Ruby on Rails
• You are willing to work on frontend development with React
• You have a "user first" mindset and want to build products focused on bringing value through secure, well-tested, and pragmatic code
• You are proactive, curious, collaborative, and eager to learn
• You integrate AI into your daily workflow
• You are fluent in English (German is a plus)

Life at Doctolib Tech

• Our solutions are built on a single fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to country and healthcare specialty requirements.
• Our stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native.
• We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here.

Want to learn more about our tech culture and environment? Visit the Doctolib Tech site.

What we offer

• A Deutschlandticket (Germany-wide public transport pass) fully paid for by Doctolib
• 28 vacation days + 1 additional day for each full calendar year of employment (up to a maximum of 30 days)
• Work from abroad for up to 10 days per year thanks to our flexibility days policy
• Company health insurance with great supplementary benefits through our partner Allianz
• Company pension scheme (bAV) through Allianz with an employer subsidy of 40% (15% within the probationary period)
• The Doctolib Parent Care program, which includes one month additional parental leave and much more
• Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth
• Free mental health and coaching services through our partner Moka.care
• Subsidized sports membership through our partner Urban Sports Club
• A flexible workplace policy offering both hybrid and office-based mode
• Alongside healthy snacks and our regular breakfast buffet, we provide a subsidized meal benefit
• For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support
• Relocation support in case of international mobility
• Access to the best AI tools for coding, development and dedicated training

Our interview process

• Recruiter Interview
• Feature Building Interview
• System Design Interview
• Behavioral Interview
• At least one reference check

We want your experience to be clear, respectful, and transparent. Learn more about our hiring process on our candidate experience page.

Job details

• Permanent position
• Tech stack: Java, Kotlin, Ruby on Rails, React
• Full-time
• Location: Berlin, Germany
• Working mode: Hybrid
• Start date: as soon as possible

We welcome everyone

At Doctolib, we are committed to improving access to healthcare for everyone. This translates into our recruitment process. We evaluate candidates based solely on qualifications and motivation, without any form of discrimination.

The more diverse ideas are heard, the more our product will truly improve healthcare for all. You are welcome to apply to Doctolib, regardless of your gender, religion, age, sexual orientation, ethnicity, or disability.

To ensure equal opportunities, we invite you to exclude personal information (e.g., pictures, age) from your applications. If you require any accommodation, please let us know for support during the hiring process.

Join us in building the healthcare we all dream of!

Your data privacy

All information provided is processed by Doctolib for application management. For data processing details, click here. Please contact hr.dataprivacy(at)doctolib.com for inquiries or to exercise your rights.

Please note that this position is based in Berlin or London. 

THE BEST WORK OF YOUR CAREER 

Trade Republic is the largest savings platform in Europe - we operate in 17 countries, serving +8 million customers who trusted us with over 100B in assets. But we’re striving for more.

We have a bold mission to empower everyone to build wealth with easy, safe, and free access to financial systems. You will have the opportunity to grow your career by collaborating with a team of outstanding talents and state of the art technology to build a lasting, positive future for millions.

WHAT YOU'LL BE DOING

• Partner with engineering teams to embed security into the software development lifecycle from design to deployment;
• Conduct security code reviews, threat modeling sessions, and architecture reviews for critical applications and services;
• Design and implement SAST, DAST, and SCA solutions to identify vulnerabilities early in the development process;
• Build and maintain application security testing automation within CI/CD pipelines;
• Develop secure coding standards, security libraries, and reusable security components for engineering teams;
• Perform penetration testing and vulnerability assessments of web applications, APIs, and mobile applications;
• Triage, prioritise, and remediate application vulnerabilities working closely with development teams;
• Create security champions program and provide security training to engineering teams;
• Research emerging application security threats and integrate defensive measures into the security architecture;
• Contribute to bug bounty program management and coordinate with external security researchers

WHAT WE'RE LOOKING FOR

Core Experience:

• 5+ years as a Security Engineer with 4+ years focused on application security
• Deep understanding of web application security (OWASP Top 10, API security, authentication/authorization)
• Hands-on experience with security testing tools (Burp Suite, OWASP ZAP, Semgrep, etc.)
• Strong programming skills in modern languages (Python, Java, Kotlin, Go, or JavaScript)
• Experience integrating security tooling into CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins)
• Expertise in secure architecture patterns for microservices, APIs, and distributed systems
• Solid understanding of cryptography, secure session management, and identity/access management
• Hands-on experience with security testing of cryptocurrency/blockchain infrastructure and applications is a major bonus
• Experience with mobile application security (iOS/Android)
• Knowledge of compliance frameworks (PCI-DSS, GDPR, MaRisk) is advantageous
• Excellent communication skills to translate security concepts for engineering audience

WHY YOU SHOULD APPLY NOW

Our culture rewards ownership, excellence, and high energy. We care deeply about outcomes and hold each other accountable - we’re here to win and fix one of the largest challenges Europeans face - closing the pension gap and democratising wealth. If this gets you fired up, reach out!

The Role

Gigs for Work is our employee phone plan management platform — one platform that lets companies manage business phone plans for distributed teams across 50+ countries. We're building the sales function for this product from scratch, and this is a senior IC hire with genuine ownership: of a region, a pipeline, and a number.

You'll sell into Security, HR, IT, Procurement, and Finance at enterprise companies, running complex, multi-stakeholder deals without a dedicated sales engineer, sales ops team, or pre-built playbook to lean on. If you're the kind of salesperson who thrives when the path isn't paved — and who wants the upside that comes with that — this role is built for you.

What You Will Do

• Enterprise Pipeline & Outreach: Build and manage a healthy outbound pipeline from scratch. Identify and engage senior decision-makers in Security, HR, IT, Procurement, and Finance at enterprise companies, and develop tailored outreach strategies for each buyer segment.
• Full-Cycle Deal Ownership: Own every stage of the sales process from first contact to signed contract. Navigate complex, multi-stakeholder buying processes, build compelling business cases, and drive deals through procurement and legal independently.
• Account Growth: Develop long-term relationships with customers post-close, partnering with the team to identify expansion opportunities and ensure retention.
• Go-to-Market Strategy: Define your ICP, build outreach playbooks by buyer segment, and develop a regional strategy with a high degree of autonomy. You'll bring structure to ambiguous problems and take accountability for what works.
• Cross-functional Influence: Work closely with Product, Engineering, and Operations to feed market insights back into the roadmap. At this stage of the company, your field intelligence directly shapes what we build next.

What We Are Looking For

• Enterprise Sales Track Record: You have a proven history of winning and expanding enterprise accounts, ideally at a company in a period of rapid growth or a zero-to-one moment. You're comfortable running 3–6 month sales cycles and presenting to VP and C-suite buyers.
• Senior Buyer Network: You bring existing relationships with decision-makers in Security, HR, IT, Procurement, and/or Finance at enterprise companies. You know how to get in the room — and how to navigate from champion to buying committee.
• Self-Sufficiency: You're used to operating without a dedicated sales engineer, sales ops function, or established playbook. You build your own decks, run your own discovery, and close your own deals.
• Commercial & Strategic Acumen: You can think at the level of "what does this customer's business actually need?" and build business cases that resonate with finance-minded buyers. You're analytically rigorous, data-fluent, and can model the economics of a deal clearly.
• Entrepreneurial Mindset: You're drawn to early-stage environments where the path isn't paved, and motivated by ownership — of a region, a segment, a number. You take initiative without being asked and hold yourself to a high standard.
• Product Curiosity: You get excited about new product categories and invest in understanding them at depth. You can translate product complexity into clear customer value, even in a space — enterprise telecoms, HR tech, IT infrastructure — that buyers may not have actively considered before.
• Mission-Driven: You care about the problem we're solving — making it simpler for companies to give their distributed teams access to reliable, managed phone connectivity — and you want to be part of building something that lasts.

What we do

What you'll do

• Design, ship, and operate production-grade agentic LLM systems that improve patient-practitioner interaction and streamline healthcare workflows
• Validate hypothesis with offline evaluation datasets and A/B tests on real traffic
• Partner with other machine learning teams to design and improve evaluation pipelines, security/safety guardrails, and metrics
• Develop and maintain core agentic capabilities, including memory, reasoning orchestration, and tool adapters, ensuring strong observability, fallback mechanisms, and fail-safe behaviors
• Own performance, observability, and security: monitoring dashboards, SLO/SLI, security posture
• Ensure privacy and security by design
• Contribute to cross-functional initiatives that shape Doctolib's future AI platform and best practices in building agentic systems that will reinvent the work of health professionals and improve people's health

About our tech environment

• Our solutions are built on a single, fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to the country and healthcare specialty requirements. To address these challenges, we are modularizing our platform run in a distributed architecture through reusable components.
• Our stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native.
• We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here!

Who you are

• You have 6+ years of experience as a software engineer, with significant experience using Python
• You have a track record of experience with the full lifecycle of an AI product at scale, from initial evaluation and launch to iterations based on results in production
• You understand and promote best practices related to the software development life cycle, such as automated testing, good use of CI/CD, and DevOps practices (you build it - you run it)
• You are product-oriented and comfortable guiding your teammates to suggest tradeoffs to balance business needs with technical constraints
• You are very focused on code quality and have a rigorous testing culture
• You are eager to share your knowledge and help the team grow by pair programming and mentoring
• You are comfortable speaking & writing in English in your day-to-day with the team

• Have experience with agentic systems in production
• Have experience in the medical domain

What we offer

• A Deutschlandticket (Germany-wide public transport pass) fully paid for by Doctolib
• 28 vacation days + 1 additional day for each full calendar year of employment (up to a maximum of 30 days)
• Work from abroad for up to 10 days per year thanks to our flexibility days policy
• Company health insurance with great supplementary benefits through our partner Allianz
• Company pension scheme (bAV) through Allianz with an employer subsidy
  of 40% (15% within the probationary period)
• Enrollment in Doctolib's long-term employee value sharing plan called DoctoGrowth
• The Doctolib Parent Care program, which includes one month additional parental leave and much more
• Free mental health and coaching services through our partner Moka.care
• Subsidized sports membership through our partner Urban Sports Club
• A flexible workplace policy offering both hybrid and office-based mode
• Alongside healthy snacks and our regular breakfast buffet, we provide a subsidized meal benefit
• For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support

The interview process

• Recruiter Interview
• Feature Building Interview
• AI System Design Interview
• Behavioral Interview
• Reference check
• Offer!

Job details

• Full-time
• Location: Berlin
• Working mode: Hybrid
• Start date: as soon as possible

Our Challenges

Our job is solid software engineering, not hype engineering. Carrier APIs differ a lot across countries, providers and regulatory regimes. Provisioning, porting, and eSIM lifecycle management happen in real-time with hard SLA requirements. Usage tracking, billing, and payments span multiple currencies and jurisdictions. Our systems need to be observable, operable, and resilient. When a carrier integration fails at 3am in a market far away, we need to know about it before the customer does.

Ours is a world where decades-old carrier protocols meet eSIMs, IoT, satellite connectivity, and the road to 6G. We are bridging that gap; making the old world programmable for the new one. We’re a platform company solving real, durable problems that don’t disappear when the hype cycle turns.

Our engineering team is doubling in 2026. In the next step of our journey, we’re building out a senior IC track, hiring multiple staff and principal engineers, because the challenges we’re solving today are only getting deeper. New markets, new connectivity paradigms, and an architecture that needs to carry us for years, not quarters.

Who You Are

You’ve seen what good and bad look like. You bring experience of operating at scale (technological or organizational) and you know systems and practices that hold up under pressure both from experience and literature. We’re looking for someone who can work across teams, connecting the technical dots between them. Someone who spots domain boundary problems before they become production incidents, and who builds the patterns and processes that the teams around them adopt and keep.

What you will do

• Design and evolve cross-cutting architectures (event-driven systems, multi-carrier integrations, multi-tenant platform patterns) and establish the governance and review practices to keep them coherent as we grow
• Raise the bar on operational excellence. Not just the systems (observability, SLOs, graceful degradation) but the processes and culture around incident response, on-call, and production ownership
• Find the places where AI changes the work, primarily in our platform and engineering practices, and push those forward
• Mentor senior engineers and help define what the senior IC growth path looks like at Gigs
• Ship production code and shape technical strategy with our engineering leadership

What we are looking for

You’ve seen what good and bad look like. You bring experience of operating at scale (technological or organizational) and you know systems and practices that hold up under pressure both from experience and literature. We’re looking for someone who can work across teams, connecting the technical dots between them. Someone who spots domain boundary problems before they become production incidents, and who builds the patterns and processes that the teams around them adopt and keep.

What We Expect on Day 1 (and in the Interviews)

• Experience developing, running, and maintaining distributed systems and event-driven architectures at scale
• Strong operational instincts. You think about observability, failure modes, alerting, and graceful degradation as first-class concerns, not afterthoughts. You’ve built systems that are debuggable by someone who didn’t write them
• Experience navigating and rationalizing polyglot environments
• Excellent communication skills with experience operating in an a international organisation
• Experience with agentic AI development. You’ve worked with LLMs beyond code completion, understand agentic patterns, and have opinions on when AI is the right tool and when it isn’t
• Track record of driving technical outcomes across teams without direct authority. You persuade through credibility and evidence, not rank
• Engineers around you got better because you were there, and you can point to specifics

Nice to Have

• Experience in telecom, payments, or multi-market API platforms
• Familiarity with any of our stack (Ruby, Go, TypeScript, Python)
• Experience at companies during a similar scaling phase (50 → 200 engineers)
• Background in domain-driven design or platform/product boundary work

About the role:  

We are in search of a solution-oriented Staff Software Engineer (Backend) with deep, demonstrable expertise and experience in Rust, to lead the development of secure, scalable, and high-performance backend systems for the Affinidi Elements platform. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. You will be responsible for the continued enhancement and development of a multi-component platform, where your expert skills in designing, architecting, and building quality systems will intersect with your hands-on coding, performance testing, and integrating experience.   

Our work culture at Affinidi is shaped by the following tenets:    

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data   

Further, Affinidi’s focus on the open source community, and collaboration with standards bodies to develop the next version of the internet – the Internet of Trust – guides every engineering and product decision we make. 

 What’s in it for you:   

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust. Experience in TypeScript and Dart will set you above other applicants for this role 
• Create standards-compliant world-class software systems and components, most of which will be open sourced as our commitment to the OSS and decentralised community
• Influence architectural direction and long-term technical strategy while staying hands-on with development
• Design and implement solutions to complex, large-scale technical challenges
• Identify and drive the most critical improvements in product quality, security, and performance
• Raise the bar for engineering excellence through mentorship, code reviews, and workshops
• Guide the team to build well-tested, secure, and performant services
• Establish and refine best practices for high-scale distributed systems
• Collaborate closely with product, security, and engineering peers in a fast-paced, iterative environment 

 You will be a great match if you:   

• Proven experience with performance optimization and a track record of diagnosing and preventing system bottlenecks
• Strong backend development skills with Rust as a core expertise
• Deep knowledge of TypeScript/Node.js; Dart experience strongly preferred. Familiarity with C# or Go is a plus
• Expertise in cloud computing (AWS) and cloud-native environments
• Proven track record in designing and deploying distributed systems using modern design patterns
• Skilled in technical documentation (C4 Model, ADRs) and clear communication of architectural decisions
• Strong advocate for privacy by design, security-first principles, and high-performance systems
• Expertise in applying asynchronous cryptography in production-grade products
• Experience with authorization/authentication domains; knowledge of identity, verifiable credentials, or secure data exchange is a strong plus
• Comfortable thriving in autonomous, fast-moving startup environments and collaborating across global teams 

Bonus points:   

• Experience working across functions, locations, and time zones
• Expertise in decentralized identity solutions
• Experience building systems with advanced cryptography requirements 

What can you expect from us:   

• Hybrid working model 
• Flexible working hours 
• Unlimited vacation policy 
• Competitive compensation package 
• Work within international environment 
• Learning Budget 
• Mobile Allowance 
• Home Office Allowance 

Sounds like you? Apply now!   

#LI-DS1

About the role:  

We are in search of a solution-oriented Staff Software Engineer (Backend) with deep, demonstrable expertise and experience in Rust, to lead the development of secure, scalable, and high-performance backend systems for the Affinidi Elements platform. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. You will be responsible for the continued enhancement and development of a multi-component platform, where your expert skills in designing, architecting, and building quality systems will intersect with your hands-on coding, performance testing, and integrating experience.   

Our work culture at Affinidi is shaped by the following tenets:    

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data   

Further, Affinidi’s focus on the open source community, and collaboration with standards bodies to develop the next version of the internet – the Internet of Trust – guides every engineering and product decision we make. 

 What’s in it for you:   

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust. Experience in TypeScript and Dart will set you above other applicants for this role 
• Create standards-compliant world-class software systems and components, most of which will be open sourced as our commitment to the OSS and decentralised community
• Influence architectural direction and long-term technical strategy while staying hands-on with development
• Design and implement solutions to complex, large-scale technical challenges
• Identify and drive the most critical improvements in product quality, security, and performance
• Raise the bar for engineering excellence through mentorship, code reviews, and workshops
• Guide the team to build well-tested, secure, and performant services
• Establish and refine best practices for high-scale distributed systems
• Collaborate closely with product, security, and engineering peers in a fast-paced, iterative environment 

 You will be a great match if you:   

• Proven experience with performance optimization and a track record of diagnosing and preventing system bottlenecks
• Strong backend development skills with Rust as a core expertise
• Deep knowledge of TypeScript/Node.js; Dart experience strongly preferred. Familiarity with C# or Go is a plus
• Expertise in cloud computing (AWS) and cloud-native environments
• Proven track record in designing and deploying distributed systems using modern design patterns
• Skilled in technical documentation (C4 Model, ADRs) and clear communication of architectural decisions
• Strong advocate for privacy by design, security-first principles, and high-performance systems
• Expertise in applying asynchronous cryptography in production-grade products
• Experience with authorization/authentication domains; knowledge of identity, verifiable credentials, or secure data exchange is a strong plus
• Comfortable thriving in autonomous, fast-moving startup environments and collaborating across global teams 

Bonus points:   

• Experience working across functions, locations, and time zones
• Expertise in decentralized identity solutions
• Experience building systems with advanced cryptography requirements 

What can you expect from us:   

• Hybrid working model 
• Flexible working hours 
• Unlimited vacation policy 
• Competitive compensation package 
• Work within international environment 
• Learning Budget 
• Mobile Allowance 
• Home Office Allowance 

Sounds like you? Apply now!   

#LI-DS1

About the role:  

We are in search of a solution-oriented Staff Software Engineer (Backend) with deep, demonstrable expertise and experience in Rust, to lead the development of secure, scalable, and high-performance backend systems for the Affinidi Elements platform. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. You will be responsible for the continued enhancement and development of a multi-component platform, where your expert skills in designing, architecting, and building quality systems will intersect with your hands-on coding, performance testing, and integrating experience.   

Our work culture at Affinidi is shaped by the following tenets:    

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data   

Further, Affinidi’s focus on the open source community, and collaboration with standards bodies to develop the next version of the internet – the Internet of Trust – guides every engineering and product decision we make. 

 What’s in it for you:   

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust. Experience in TypeScript and Dart will set you above other applicants for this role 
• Create standards-compliant world-class software systems and components, most of which will be open sourced as our commitment to the OSS and decentralised community
• Influence architectural direction and long-term technical strategy while staying hands-on with development
• Design and implement solutions to complex, large-scale technical challenges
• Identify and drive the most critical improvements in product quality, security, and performance
• Raise the bar for engineering excellence through mentorship, code reviews, and workshops
• Guide the team to build well-tested, secure, and performant services
• Establish and refine best practices for high-scale distributed systems
• Collaborate closely with product, security, and engineering peers in a fast-paced, iterative environment 

 You will be a great match if you:   

• Proven experience with performance optimization and a track record of diagnosing and preventing system bottlenecks
• Strong backend development skills with Rust as a core expertise
• Deep knowledge of TypeScript/Node.js; Dart experience strongly preferred. Familiarity with C# or Go is a plus
• Expertise in cloud computing (AWS) and cloud-native environments
• Proven track record in designing and deploying distributed systems using modern design patterns
• Skilled in technical documentation (C4 Model, ADRs) and clear communication of architectural decisions
• Strong advocate for privacy by design, security-first principles, and high-performance systems
• Expertise in applying asynchronous cryptography in production-grade products
• Experience with authorization/authentication domains; knowledge of identity, verifiable credentials, or secure data exchange is a strong plus
• Comfortable thriving in autonomous, fast-moving startup environments and collaborating across global teams 

Bonus points:   

• Experience working across functions, locations, and time zones
• Expertise in decentralized identity solutions
• Experience building systems with advanced cryptography requirements 

What can you expect from us:   

• Hybrid working model 
• Flexible working hours 
• Unlimited vacation policy 
• Competitive compensation package 
• Work within international environment 
• Learning Budget 
• Mobile Allowance 
• Home Office Allowance 
• Urban Sport Membership 

Sounds like you? Apply now!   

#LI-DS1

Join us as a Scala Software Engineer (all genders) in our Payment team on a shared journey that matters!  

The Payment team is dedicated to delivering a convenient and secure payment experience for our passengers. You will join a cross-functional team that shares an unwavering passion for creating impactful software solutions that not only cater to our current users but also allow for significant scalability. To achieve our ambitious goals, they design and maintain backend micro-services and mobile app components, always emphasizing a future-proof and resilient architecture. 

What you will do

• Provide an outstanding customer experience: Together with the developers of your team, you will contribute to a one-of-a-kind app which provides a smooth and friction-free payment experience to our customers.
• Assure Quality: Ensure the systems owned by your team meet the highest quality standards, including code reviews, testing, and validation processes across team boundaries.
• Breathing “agile”: You will follow core agile working methodologies in the team. 

What will help you to fulfill your role 

• You have experience with developing software in Scala and functional programming. Bonus if you have experience with ZIO and/or cats-effects.
• You enjoy solving challenges in distributed systems.
• You have experience or interest in Kubernetes and AWS.
• You are keen to receive and give feedback in pairing and code review sessions.
• You follow DevOps best practices and believe in automated testing, infrastructure as code, continuous deployment, and monitoring.
• You have a strong sense of ownership and are eager to contribute right from the beginning of a new project.
• You have a customer-driven mindset.
• You can communicate fluently in English.

We accept all seniority levels. So please don't feel discouraged if you don't meet all the enlisted skills. We embrace individual growth at MOIA. 

In case you have questions regarding your application, you can approach the recruiter Jovana directly.

About the role: 

We are in search of a solution-oriented and experienced Staff Software Engineer (Full Stack) to join our Affinidi Elements team. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. You will be responsible for the continued enhancement and development of a multi-component platform, where your expert skills in designing, architecting, and building quality systems will intersect with your hands-on coding, performance testing, and integrating experience.  

Our work culture at Affinidi is shaped by the following tenets:   

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data  

 What’s in it for you:  

• Develop features and improvements to the Affinidi Elements product in a secure, well-tested, and performant way, primarily using Typescript & React.
• Analyze and interpret highly complex data to arrive at actionable recommendations
• Collaborate with Product Management and other stakeholders within Engineering (e.g. UX) to maintain a high bar for quality in a fast-paced and iterative environment
• Advocate for improvements to product quality, security, and performance
• Solve technical problems with large scope and complexity
• Craft code that meets our internal standards for style, maintainability, and best practices for a high-scale systems environment. Maintain and advocate for these standards through code review.
• Confidently own moderate to significantly complex features and improvements with minimal guidance and support from other team members. Collaborate with the team on larger projects.
• Mentor other engineers, contribute to team and organizational improvements in processes and tooling. 

 You will be a great match if you:  

• Have experience with performance and optimization problems, a demonstrated ability to both diagnose and prevent such problems, and a desire to share your knowledge and scale through others.
• Are a passionate developer across both front and back-end with extensive experience using Javascript, Typescript, Node.js and React. Other languages (Rust, Dart, C#, Java, Golang for example) are also attractive skills for this role.
• Expertise in cloud computing (AWS) and cloud-native environments
• Understand design patterns and have working experience in developing and deploying microservices in the cloud, and have a proven track-record in doing so.
• Have strong technical documentation skills, including the C4 Model and Architectural Decision Records.
• Are hands-on with REST APIs and are able to apply Test Driven Development principles effectively. 
• Care about privacy by design, security, testing, high-performance systems, and mentoring others, and have an inclination towards clear communication, inclusion and visibility.
• Enjoy working in a fast-paced startup environment where you can be autonomous and experimental, be part of a truly global team, and can work up and down the stack. 

 Bonus points:  

• Experience in designing/developing external SDK/API and CLI
• Experience working cross-functionally, and across locations and time zones
• Domain expertise in decentralized identity solutions 
• Experience in developing systems with cryptography requirements  

What can you expect from us:  

• Hybrid working model 
• Flexible working hours 
• Unlimited vacation policy 
• Competitive compensation package 
• Work within international environment 
• Learning Budget 
• Mobile Allowance 
• Home Office Allowance 

Sounds like you? Apply now!  

#LI-AB1

About the role: 

We are in search of a solution-oriented and experienced Staff Software Engineer (Full Stack) to join our Affinidi Elements team. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. You will be responsible for the continued enhancement and development of a multi-component platform, where your expert skills in designing, architecting, and building quality systems will intersect with your hands-on coding, performance testing, and integrating experience.  

Our work culture at Affinidi is shaped by the following tenets:   

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data  

 What’s in it for you:  

• Develop features and improvements to the Affinidi Elements product in a secure, well-tested, and performant way, primarily using Typescript & React.
• Analyze and interpret highly complex data to arrive at actionable recommendations
• Collaborate with Product Management and other stakeholders within Engineering (e.g. UX) to maintain a high bar for quality in a fast-paced and iterative environment
• Advocate for improvements to product quality, security, and performance
• Solve technical problems with large scope and complexity
• Craft code that meets our internal standards for style, maintainability, and best practices for a high-scale systems environment. Maintain and advocate for these standards through code review.
• Confidently own moderate to significantly complex features and improvements with minimal guidance and support from other team members. Collaborate with the team on larger projects.
• Mentor other engineers, contribute to team and organizational improvements in processes and tooling. 

 You will be a great match if you:  

• Have experience with performance and optimization problems, a demonstrated ability to both diagnose and prevent such problems, and a desire to share your knowledge and scale through others.
• Are a passionate developer across both front and back-end with extensive experience using Javascript, Typescript, Node.js and React. Other languages (Rust, Dart, C#, Java, Golang for example) are also attractive skills for this role.
• Expertise in cloud computing (AWS) and cloud-native environments
• Understand design patterns and have working experience in developing and deploying microservices in the cloud, and have a proven track-record in doing so.
• Have strong technical documentation skills, including the C4 Model and Architectural Decision Records.
• Are hands-on with REST APIs and are able to apply Test Driven Development principles effectively. 
• Care about privacy by design, security, testing, high-performance systems, and mentoring others, and have an inclination towards clear communication, inclusion and visibility.
• Enjoy working in a fast-paced startup environment where you can be autonomous and experimental, be part of a truly global team, and can work up and down the stack. 

 Bonus points:  

• Experience in designing/developing external SDK/API and CLI
• Experience working cross-functionally, and across locations and time zones
• Domain expertise in decentralized identity solutions 
• Experience in developing systems with cryptography requirements  

What can you expect from us:  

• Hybrid working model 
• Flexible working hours 
• Unlimited vacation policy 
• Competitive compensation package 
• Work within international environment 
• Learning Budget 
• Mobile Allowance 
• Home Office Allowance 

Sounds like you? Apply now!  

#LI-AB1

About the role: 

We are in search of a solution-oriented and experienced Staff Software Engineer (Full Stack) to join our Affinidi Elements team. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from the product, design, infrastructure, architecture, and back/front-end engineering teams. You will be responsible for the continued enhancement and development of a multi-component platform, where your expert skills in designing, architecting, and building quality systems will intersect with your hands-on coding, performance testing, and integrating experience.  

Our work culture at Affinidi is shaped by the following tenets:   

• We are unapologetically customer-focused 
• We invest in cultures and teams to enable high performance 
• Embraces experimentation and builds fast 
• We have the courage to be misunderstood 
• We work together to unlock data  

 What’s in it for you:  

• Develop features and improvements to the Affinidi Elements product in a secure, well-tested, and performant way, primarily using Typescript & React.
• Analyze and interpret highly complex data to arrive at actionable recommendations
• Collaborate with Product Management and other stakeholders within Engineering (e.g. UX) to maintain a high bar for quality in a fast-paced and iterative environment
• Advocate for improvements to product quality, security, and performance
• Solve technical problems with large scope and complexity
• Craft code that meets our internal standards for style, maintainability, and best practices for a high-scale systems environment. Maintain and advocate for these standards through code review.
• Confidently own moderate to significantly complex features and improvements with minimal guidance and support from other team members. Collaborate with the team on larger projects.
• Mentor other engineers, contribute to team and organizational improvements in processes and tooling. 

 You will be a great match if you:  

• Have experience with performance and optimization problems, a demonstrated ability to both diagnose and prevent such problems, and a desire to share your knowledge and scale through others.
• Are a passionate developer across both front and back-end with extensive experience using Javascript, Typescript, Node.js and React. Other languages (Rust, Dart, C#, Java, Golang for example) are also attractive skills for this role.
• Expertise in cloud computing (AWS) and cloud-native environments
• Understand design patterns and have working experience in developing and deploying microservices in the cloud, and have a proven track-record in doing so.
• Have strong technical documentation skills, including the C4 Model and Architectural Decision Records.
• Are hands-on with REST APIs and are able to apply Test Driven Development principles effectively. 
• Care about privacy by design, security, testing, high-performance systems, and mentoring others, and have an inclination towards clear communication, inclusion and visibility.
• Enjoy working in a fast-paced startup environment where you can be autonomous and experimental, be part of a truly global team, and can work up and down the stack. 

 Bonus points:  

• Experience in designing/developing external SDK/API and CLI
• Experience working cross-functionally, and across locations and time zones
• Domain expertise in decentralized identity solutions 
• Experience in developing systems with cryptography requirements  

What can you expect from us:  

• Hybrid working model 
• Flexible working hours 
• Unlimited vacation policy 
• Competitive compensation package 
• Work within international environment 
• Learning Budget 
• Mobile Allowance 
• Home Office Allowance 
• Urban Sport Membership

Sounds like you? Apply now!  

#LI-AB1

Your Impact

What you'll build

• Build and operate scalable backend services in Node.js/TypeScript with additional exposure to Python
• Ship cloud-native systems on Kubernetes and major Cloud Services (AWS/Azure/GCP)
• Set up and evolve CI/CD pipelines with GitHub Actions while maintaining a high testing standard (unit, integration, e2e)
• Debug and improve distributed systems in production with strong observability practices
• Learn and apply VoIP telephony fundamentals (SIP, RTP, etc.) to power real-time communication features
• Own roadmap items end-to-end and contribute to pragmatic, secure architecture decisions
• Design data models and drive database migrations and performance tuning for real-time workloads using PostgreSQL

What you'll bring

• You have at least 5+ years of backend engineering experience
• You have the ability to design, build, and maintain scalable, resilient backend systems using Node.js/TypeScript with some Python
• You have proven experience deploying and operating services on Kubernetes within at least one major Cloud Service (AWS, Azure, or GCP)
• You have experience with CI/CD (e.g., GitHub Actions) and maintain a strong testing culture (unit/integration/e2e)
• You have solid debugging skills for microservices and distributed systems
• You have working knowledge of relational databases (PostgreSQL/MySQL) and schema design
• You have an interest in or exposure to VoIP telephony basics (SIP, RTP/SRTP, SBCs, SIP trunks)

• You have experience with real-time communication systems (WebRTC, streaming, etc.)
• You have worked with event-driven architectures and message brokers (Kafka/RabbitMQ/NATS/Redis Streams)
• You are familiar with software design patterns; Domain-Driven Design is a plus
• You have experience with PostgreSQL (migrations, EXPLAIN/ANALYZE, indexing strategies, connection pooling) and Redis (caching, short-lived state, queues)

Life at Doctolib Tech

• Our solutions are built on a single fully cloud-native platform that supports web and mobile app interfaces, multiple languages, and is adapted to country and healthcare specialty requirements.
• Our stack is composed of Rails, TypeScript, Java, Python, Kotlin, Swift, and React Native.
• We leverage AI ethically across our products to empower patients and health professionals. Discover our AI vision here.

What we offer

• A Deutschlandticket (Germany-wide public transport pass) fully paid for by Doctolib
• 28 vacation days + 1 additional day for each full calendar year of employment (up to a maximum of 30 days)
• Work from abroad for up to 10 days per year thanks to our flexibility days policy
• Company health insurance with great supplementary benefits through our partner Allianz
• Company pension scheme (bAV) through Allianz with an employer subsidy of 40% (15% within the probationary period)
• The Doctolib Parent Care program, which includes one month additional parental leave and much more
• Free mental health and coaching services through our partner Moka.care
• Subsidized sports membership through our partner Urban Sports Club
• A flexible workplace policy offering both hybrid and office-based mode
• Alongside healthy snacks and our regular breakfast buffet, we provide a subsidized meal benefit
• For caregivers and workers with disabilities, a package including an adaptation of the remote policy, extra days off for medical reasons, and psychological support
• Relocation support in case of international mobility
• Access to the best AI tools for coding, development and dedicated training

Our interview process

• Recruiter Interview
• Live coding interview
• System Design interview
• Behavioral interview
• At least one reference check

Job details

• Permanent position
• Tech stack: Node.js, TypeScript, Python, Kubernetes, PostgreSQL
• Full-time
• Hybrid work mode: 3 days/week in the office
• Location: Berlin, Germany
• Start date: as soon as possible

We welcome everyone