About Tripadvisor 

The Tripadvisor Group connects people to experiences worth sharing, and aims to be the world’s most trusted source for travel and experiences. We leverage our brands, technology, and capabilities to connect our global audience with partners through rich content, travel guidance, and two-sided marketplaces for experiences, accommodations, restaurants, and other travel categories. The subsidiaries of Tripadvisor, Inc. (Nasdaq: TRIP), include a portfolio of travel brands and businesses, including Tripadvisor, Viator, and TheFork.

The Tripadvisor Experiences Engineering team is distributed across Europe and is responsible for the platform, mobile apps and all their supporting infrastructure. We run the systems that help operators build their businesses and those which enable third parties to utilise our inventory. We provide the tools which help our customer services team provide world class service to travellers and operators internationally.

About the Role

We’re looking for a Software Engineer II - iOS to join our fast-growing team. This role is open to candidates based within a commutable distance (generally up to 1.5 hours) of our office hub in Kraków. We are unable to offer B2B contracts at this time. We embrace flexibility in where and how work gets done and also value meaningful in-person moments to connect and collaborate. You can expect a remote-first working model with periodic in-person gatherings at your closest office for team connection, planning, or other key moments.

Within Tripadvisor we have a fun and friendly environment where the key objective is getting things done. Our engineers take part in the full process from design, to code, to test, to deployment and back again for further iteration.

Our tech stack includes Swift, SwiftUI, Combine and GraphQL in a modular layout that follows SOLID principles using Clean Architecture with MVVM-C.

Would you like to build features end to end? Would you enjoy working with a large number of technologies? Do you like moving quickly, releasing features daily, working with other smart and talented engineers? If this sounds like you, we’d love to talk to you.

What you will do

• Code! Our engineers focus on doing what they enjoy most and do best, writing code
• Touch code at every level – while the focus is app development, you’ll also have opportunities to work on backend microservices
• Collaborate closely with Product and design teams to define feature specifications and develop high quality deliverables for our customers
• Take responsibility for all aspects of software engineering, from design to implementation, development experience, QA and maintenance
• Work alongside other engineering groups located around the world

What we’re looking for:

• Experience of developing an iOS app and familiarity with mobile web and back-end technologies would be beneficial
• 2-6 years’ experience of commercial software development, ideally working with a rich user interface
• Experience with reactive programming in native mobile platforms
• Willingness and ability to take on new technologies
• Ability to break down complex problems into simple solutions
• High quality verbal and written communication skills
• Sense of ownership and pride in your work

What We Offer 

• Competitive compensation packages (routinely benchmarked against the latest industry data), including base salary and annual bonuses
• “Work your way” with flexibility to suit your lifestyle. Tripadvisor Group takes a remote-friendly approach to collaboration across a worldwide team, with the option to join on-site as often as you’d like or as required by your team.
• Flexible schedule. Work-life balance is ingrained in our culture by design. Trust and accountability make it work.
• Donation matching. Give back? Give more! We match qualifying charitable donations annually.
• Tuition assistance. Want to level up your career? We love to hear it! Receive annual support for qualified programs.
• Lifestyle benefit. An annual benefit to spend on yourself. Use it on travel, wellness, or whatever suits you.
• Travel perks. We believe that travel is employee development, so we provide discounts and more.
• Employee assistance program. We’re here for you with resources and programs to help you through life’s challenges.
• Health benefits. We offer great coverage and competitive premiums.
• Generous referral scheme. Help us grow and be rewarded with generous awards for referring successful candidates.

Our Cultural Pillars:

Traveler first

We exist to create value for our customer, the traveler. We enable our suppliers and partners to unlock this value. Their collective behaviors and insights are what drives us. 

Execution is our edge

We act fast, experiment, learn from failure, iterate, and improve the solutions of tomorrow across every aspect of our business. Our execution is agile, data-driven, prioritised, and built to scale. We assume no problem is someone else’s problem and finish what can be done today, knowing tomorrow will bring fresh challenges. 

We succeed together

The best outcomes are driven by empathic, humble, and diverse subject matter experts working toward shared goals. We collaborate relentlessly, challenge assumptions, give actionable feedback, and set each other up for success through empowered teams with a clear charter. We transparently take ownership of our growth, individually and as a team. We celebrate the quality of our effort, our learnings, and our collective achievements.

We strive to create an accessible and inclusive experience for all candidates. If you need a reasonable accommodation during the application or the recruiting process, please make sure to reach out to your individual recruiter or our team at AccessibleRecruiting@tripadvisor.com.

If you have any additional questions about careers at Tripadvisor you can email us at recruitment@tripadvisor.com. We have all the answers!

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month.

Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech.

HelloTech works in autonomous, cross-functional alliances, each owning a specific product or domain end to end. By working with our Warsaw office, you will help shape scalable, data-driven products used across our markets, working with a modern tech stack and international teams to continuously improve how people discover, order, and enjoy HelloFresh’s products, today and in the future.

About the role: What's in the Box

The Food Systems Alliance at HelloFresh is focused on building and scaling global systems that support the entire food journey, from assortment and ingredient development to supply chain management technology. This includes key domains such as master data management, strategic procurement, applied science (covering areas like menu planning, personalization, forecasting, and operations research), supplier reliability, and inventory planning. With end-to-end ownership of critical supply chain functions, the Alliance enables efficient, consistent, and innovative solutions. This integrated approach supports faster software development, enhanced collaboration, and the delivery of scalable systems across global markets.

As a Senior Backend Engineer in our Food Systems Alliance, you will be responsible for defining, securing, and implementing technical solutions for business problems. You will look after speeding up development, decision-making, and problem-solving. You will work within your team and our neighboring teams to ensure that our efforts aim to achieve a clearer architecture and boundaries between tech teams to support autonomy. You will communicate directly with our business stakeholders and multiple tech teams supporting local markets. You will report to the Engineering Manager in the Ingredient to Product tribe. This role does not include people management responsibilities.

What you’ll do: The Recipe

• Work on of the architecture, design, development, deployment and operations of the microservices you will develop, using DevOps practices, pair programming and other cutting edge methodologies 
• Be active, solution-oriented member of autonomous, cross-functional agile teams collaborating with Product Owners, Front-end Engineers, Designers, and Business Intelligence teams 
• Having an in-depth understanding of HelloFresh’s core product and architecture, and act as ambassador for software solutions offering support and mentorship to colleagues 
• Work with state-of-the-art technologies like Golang, Kafka, Docker, Kubernetes and more
  
  

What you’ll bring: The Ingredients 

• Solid hands-on experience working with AI coding agents (e.g., Claude Code, Cursor, Copilot) beyond casual experimentation. You use AI agents as thought partners to onboard on unfamiliar codebases and navigate new areas of the code with confidence. You have a practical sense of how the context you provide to AI tools - specifications, constraints, examples - shapes output quality, and a developing awareness of how agentic outputs can fail, with growing habits around verifying, testing, and setting boundaries on AI-generated work.
• Strong background in backend development, with a focus on microservices and distributed systems
• Proven ability to build event-driven architectures using messaging technologies such as RabbitMQ, Kafka, or AWS SQS/SNS
• Proficiency in Go is preferred; experience with JVM languages and a willingness to learn Golang is also welcome
• Practical knowledge of Docker, container orchestration tools like Kubernetes, and CI/CD implementation
• Solid foundation in testing practices, including both unit and end-to-end testing
• Deep understanding of relational databases
• Familiarity with MongoDB, Elasticsearch, and/or GraphQL is a plus
  
  

Above all, we are looking for people who will make HelloFresh Group 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.

#Engineering

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.

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month.

Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech.

HelloTech works in autonomous, cross-functional alliances, each owning a specific product or domain end to end. By working with our Warsaw office, you will help shape scalable, data-driven products used across our markets, working with a modern tech stack and international teams to continuously improve how people discover, order, and enjoy HelloFresh’s products, today and in the future.

About the role: What's in the Box

The service provider will join the Consumer Mega Alliance, Consumer Core Tribe as a member of the Plans squad. As a Staff Backend Engineer, you’ll play a defining and strategic role in shaping the backbone of the mission-critical Customer Plans Domain which is currently undergoing a strategic evolution, ensuring reliability and consistency for millions of users.
The focus is not just on maintenance, but on re-architecting how millions of customers interact with the product. Tasks include providing technical leadership, fostering engineering excellence, and collaborating with senior stakeholders to align technical strategy with business objectives.

At HelloTech, flexibility and cross-functional collaboration are core to how we work. While this role is aligned to a specific Alliance, strong candidates may also be considered for opportunities across different teams or projects.

What you’ll do: The Recipe

• Work on the architecture, design, and technical strategy for complex microservices systems, establishing patterns and best practices across multiple teams.
• Drive technical decision-making and architectural reviews, ensuring scalability, reliability, and maintainability of Plans domain. Your responsibilities will include conducting analysis, documenting detailed specifications, and ensuring that all defined requirements are traceable, verifiable, and align with the overall strategic goals and technical architecture.
• Lead critical technical initiatives and cross-team projects, collaborating with technical leadership and cross-functional partners to align technical strategy with business objectives.
• Drive the adoption of AI-powered tools and methodologies within the team to significantly accelerate development cycles and enhance output quality and efficiency. Mentor engineers, fostering a culture of precision, operational excellence thinking, and high-quality engineering in a high-paced environment.

What you’ll bring: The Ingredients 

•  8+ years of backend engineering experience with deep expertise in microservices and distributed event-driven architectural patterns 
• Expert-level proficiency in Go or JVM languages
• Proven track record in taking architectural decisions about the development and maintenance of large-scale distributed systems and integrations with applications and user interfaces
• Advanced experience with Docker, Kubernetes, and cloud-native architectures, including production operations at scale
• Extensive experience building event-driven architectures using message bus technologies (Kafka, RabbitMQ, SQS/SNS, etc.) 
• Deep expertise with database technologies (relational and  NoSQL), including performance optimization, schema design, and operational best practices 
• Demonstrated ability to mentor engineers and drive technical standards across teams 
• Excellent communication and collaboration skills, with experience working with senior stakeholders and distributed teams
• Meaningful experience using AI coding agents (e.g., Claude Code, Cursor, Copilot) as part of your regular workflow
• Familiarity with e-commerce, subscription-based business models, and GraphQL integration is considered a significant advantage

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.

#ENGINEERING

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month.

Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech.

HelloTech works in autonomous, cross-functional alliances, each owning a specific product or domain end to end. By working with our Warsaw office, you will help shape scalable, data-driven products used across our markets, working with a modern tech stack and international teams to continuously improve how people discover, order, and enjoy HelloFresh’s products, today and in the future.

About the role: What's in the Box

The position is part of the Consumer Alliance - Deliveries and Orders Squad, which has the mission to maximize retention of new and active customers by managing the complete order lifecycle. This squad is accountable for some of HelloFresh's most critical backend systems that process millions of orders globally.

The service provider will work with backend event-driven systems assisting millions of customers globally in the journey from subscription activation through to the cutoff moment—when orders are finalized and handed off to fulfillment teams. The focus is on ensuring customers have the right deliveries scheduled with rich flexibility features and correct orders successfully created at a right time of user choosing. This role does not include people management responsibilities.

At HelloTech, flexibility and cross-functional collaboration are core to how we work. While this role is aligned to a specific Alliance, strong candidates may also be considered for opportunities across different teams or projects.

What you’ll do: The Recipe

• Work on the architecture, design, development, deployment, and operations of microservices, using DevOps practices, extreme programming, and other methodologies utilizing modern AI workflows.
• Be an active, highly-agent and solution-oriented member of autonomous, cross-functional agile teams.
• Maintain an in-depth understanding of the core product and architecture, acting as an ambassador for software solutions and offering technical support and guidance to colleagues.
• Work with state-of-the-art technologies like Golang, Kotlin, Kafka, Docker, Kubernetes, and more.
• Contribute to architectural decisions, providing technical insights to shape the overall direction of solution design.

What you’ll bring: The Ingredients 

• Strong background in backend development of highly-available event-driven (Kafka) distributed systems with rich integrations.
• Meaningful experience using AI coding agents (e.g., Claude Code, Cursor) as part of a regular workflow. This includes using AI agents as thought partners to navigate codebases and understanding how task framing affects result quality.
• Proven ability to build architectures using messaging technologies such as Kafka and AWS SQS/SNS and expose data via future-proof REST API and gRPC interfaces.
• Proficiency with Golang; a willingness to learn Kotlin is also welcome.
• Practical knowledge of Docker, container orchestration tools like Kubernetes, and CI/CD implementation.
• Deep understanding of relational databases like PostgreSQL; knowledge of MongoDB and/or GraphQL is a plus.
• Solid foundation in testing practices, including both unit and end-to-end testing.

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.

#ENGINEERING

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month. Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech.

HelloTech works in autonomous, cross-functional alliances, each owning a specific product or domain end-to-end. By working with our Warsaw office, you will help shape scalable, data-driven products used across our markets, working with a modern tech stack and international teams to continuously improve how people discover, order, and enjoy HelloFresh’s products, today and in the future.

About the role: What's in the Box

The service provider will join the Consumer Mega Alliance, Consumer Core Tribe as part of the Plans squad. As a Senior Backend Engineer, the role involves playing a pivotal part in the Consumer Core. The squad is responsible for the mission-critical Customer Plans Domain, which is currently undergoing a strategic evolution.

The focus is not just on maintenance, but on re-architecting how millions of customers interact with the product. This is an opportunity to move a global giant toward its future state architecture, removing technical debt and building the foundation for the next decade of growth. This role does not include people management responsibilities.

Above all, we are looking for people 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 you’ll do: The Recipe

• Design, develop, and maintain scalable and reliable back-end services, focusing on distributed architecture and microservices.
• Lead the migration of critical services from a monolithic architecture to a microservices framework, ensuring seamless integration and high availability.
• Conduct code reviews and provide technical guidance to team members, promoting best practices in software development, testing, and deployment.
• Analyze system performance, identify bottlenecks, and implement optimizations to ensure optimal efficiency and reliability of services.
• Stay up-to-date with industry trends and emerging technologies, applying relevant advancements to improve the technology stack and processes.
• Contribute to architectural discussions and decisions, providing technical guidance and insights to shape the overall direction of solution design.

What you’ll bring: The Ingredients

• Strong backend engineering experience, including modernizing monolithic legacy systems into microservices, and event-driven architectures.
• Hands-on experience with event-driven systems (e.g., Kafka) and real-time lifecycle event processing.
• Proven ability to design orchestration layers for complex end-to-end customer flows.
• Proficiency in Golang (JVM/Kotlin and PHP are a plus), plus experience with PostgreSQL, Docker, Kubernetes, and CI/CD pipelines.
• Solid understanding of TDD/BDD/DDD and distributed systems; experience with e-commerce, subscriptions, and GraphQL is a plus.
• Solid hands-on experience working with AI coding agents (e.g., Claude Code, Cursor, Copilot) beyond casual experimentation. You use AI agents as thought partners to onboard on unfamiliar codebases and navigate new areas of the code with confidence. You have a practical sense of how the context you provide to AI tools - specifications, constraints, examples - shapes output quality, and a developing awareness of how agentic outputs can fail, with growing habits around verifying, testing, and setting boundaries on AI-generated work.

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.

#ENGINEERING

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month. Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech.

HelloTech works in autonomous, cross-functional alliances, each owning a specific product or domain end to end. By working with our Warsaw office, you will help shape scalable, data-driven products used across our markets, working with a modern tech stack and international teams to continuously improve how people discover, order, and enjoy HelloFresh’s products, today and in the future.

About the role: What's in the Box

You will join the Consumer Mega Alliance as part of the Deliveries and Orders squad. Your mission is to build the high-performing and scalable systems that power HelloFresh’s "Core Actions”, ensuring that millions of global users can place orders and manage their deliveries quickly and without frustration. You will play a critical role in modernizing our core domains by decoupling them from legacy monolithic systems, building the robust Order Management APIs and Delivery Services needed to unlock new business capabilities like B2B ordering, ad-hoc changes, and dynamic delivery cutoffs.

What you’ll do: The Recipe

• Deliver high-quality architecture, design, and development services for microservices, ensuring robust deployment and operational stability using DevOps practices.
• Provide expertise within autonomous, cross-functional agile teams, collaborating closely with Product Owners, Front-end Engineers, and Designers to meet project milestones.
• Apply an in-depth understanding of core product architecture to act as a technical authority, offering support and knowledge sharing to other contributors.
• Execute technical tasks using a state-of-the-art stack, including Golang, Kafka, Docker, and Kubernetes.
• Perform problem-solving services across a wide range of platforms and environments to ensure system reliability and performance.

What you’ll bring: The Ingredients

• Solid experience in backend development, covering Monolithic, Microservice, and distributed event-driven architectural patterns.
• Solid hands-on experience working with AI coding agents (e.g., Claude Code, Cursor, Copilot) beyond casual experimentation. You use AI agents as thought partners to onboard on unfamiliar codebases and navigate new areas of the code with confidence. You have a practical sense of how the context you provide to AI tools - specifications, constraints, examples - shapes output quality, and a developing awareness of how agentic outputs can fail, with growing habits around verifying, testing, and setting boundaries on AI-generated work.
• Proficiency in languages such as Golang. JVM/Kotlin is nice to have 
• Proven track record of delivering services using Docker and container orchestration technologies like Kubernetes.
• Extensive experience in implementing true Continuous Integration & Continuous Delivery (CI/CD) pipelines.
• Practical application of TDD, BDD, DDD, and distributed architectural patterns.
• Background in developing event-driven architectures utilizing Kafka and/or RabbitMQ.
• Experience working with MongoDB and PostgreSQL
• Familiarity with e-commerce, subscription-based business models, and GraphQL integration is considered a significant advantage.

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.

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month.

Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech.

HelloTech works in autonomous, cross-functional alliances, each owning a specific product or domain end to end. By working with our Warsaw office, you will help shape scalable, data-driven products used across our markets, working with a modern tech stack and international teams to continuously improve how people discover, order, and enjoy HelloFresh’s products, today and in the future.

About the role: What's in the Box

You will contribute to the Recipe Engagement Squad within a large-scale meal-kit and ready-to-eat platform. This project focuses on the delivery of high-scale systems that capture and surface customer feedback and engagement across multiple global brands. The contractor will provide expert technical services to ensure millions of customers can effortlessly share opinions and save favorite meals, directly enabling the data-driven improvement of recipe offerings.

What you’ll do: The Recipe

• Delivery of high-scale Go microservices powering recipe ratings, favorites, and feedback systems using PostgreSQL, Redis, and Kafka.
• Design and extension of GraphQL APIs within an Apollo Federation subgraph architecture for mobile and web client consumption.
• Execution of GenAI strategies, including the prototyping and implementation of production-grade features such as personalization and advanced feedback analysis.
• Service delivery for end-to-end features, from initial RFC technical design to production rollout using multi-market feature flags.
• Ensuring system reliability and observability through the implementation of monitoring via Grafana, Prometheus, and OpenTelemetry.
• Provision of technical guidance and architectural evolution across the domain to mitigate long-term technical risks.
• Collaboration with primary stakeholders in mobile, web, and product design to refine project requirements and demonstrate deliverables.
• Leading technical initiatives and streamlining delivery processes to reduce implementation churn and improve quality.

What you’ll bring: The Ingredients

• Deep expertise in Go (Golang) and the design of high-traffic distributed systems.
• Strong hands-on experience working with AI coding agents (e.g., Claude Code, Cursor, Copilot) in production or near-production environments. You think beyond prompts to context engineering, structuring specifications, tool configurations, and information flow so agents produce reliable results. You can reason about how to decompose complex workflows across multiple agentic components and identify when agentic outputs are unreliable, diagnosing problems to improve outputs in an iterative way. You have strong processes around adding guardrails, both in understanding where and when they’re needed and how to implement them.
• Proven experience operating microservices with large datasets using PostgreSQL, Redis, and Kafka.
• Technical proficiency in GraphQL schema design and federation patterns (Apollo).
• Practical experience in integrating production-grade GenAI features and using AI-assisted development tools.
• Advanced knowledge of distributed systems patterns, including cache-aside, outbox patterns, and event-driven architecture.
• Technical command of Kubernetes and AWS for containerized service operations.
• Experience with observability and tracing tools such as Prometheus, Grafana, Honeycomb, or Datadog.
• Expertise in agile delivery focused on DORA metrics and iterative software releases.
• Commitment to service quality, including thorough testing and technical peer reviews.

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.

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month. Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech.

HelloTech works in autonomous, cross-functional alliances, each owning a specific product or domain end to end. By working with our Warsaw office, you will help shape scalable, data-driven products used across our markets, working with a modern tech stack and international teams to continuously improve how people discover, order, and enjoy HelloFresh’s products, today and in the future.

About the role: What's in the Box

The service provider will contribute to the Consumer Mega Alliance within the Shopping Foundations Squad, specifically focusing on the Cart Foundation. The primary objective of this collaboration is to provide high-level engineering services that maximize the retention of active customers by optimizing how they manage subscriptions and order products. This role involves delivering scalable backend solutions for a platform that serves millions of global users, ensuring a seamless experience across the HelloFresh digital ecosystem.

What you’ll do: The Recipe

• Deliver high-quality architecture, design, and development services for microservices, ensuring robust deployment and operational stability using DevOps practices.
• Provide expertise within autonomous, cross-functional agile teams, collaborating closely with Product Owners, Front-end Engineers, and Designers to meet project milestones.
• Apply an in-depth understanding of core product architecture to act as a technical authority, offering support and knowledge sharing to other contributors.
• Execute technical tasks using a state-of-the-art stack, including Golang, Kafka, Docker, and Kubernetes.
• Perform problem-solving services across a wide range of platforms and environments to ensure system reliability and performance.

What you’ll bring: The Ingredients

• Solid experience in backend development, covering Monolithic, Microservice, and distributed event-driven architectural patterns.
• Solid hands-on experience working with AI coding agents (e.g., Claude Code, Cursor, Copilot) beyond casual experimentation. You use AI agents as thought partners to onboard on unfamiliar codebases and navigate new areas of the code with confidence. You have a practical sense of how the context you provide to AI tools - specifications, constraints, examples - shapes output quality, and a developing awareness of how agentic outputs can fail, with growing habits around verifying, testing, and setting boundaries on AI-generated work.
• Proficiency in languages such as JVM/Kotlin. Golang is nice to have 
• Proven track record of delivering services using Docker and container orchestration technologies like Kubernetes.
• Extensive experience in implementing true Continuous Integration & Continuous Delivery (CI/CD) pipelines.
• Practical application of TDD, BDD, DDD, and distributed architectural patterns.
• Background in developing event-driven architectures utilizing RabbitMQ and/or Kafka.
• Experience working with MongoDB and PostgreSQL
• Familiarity with e-commerce, subscription-based business models, and GraphQL integration is considered a significant advantage.

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.

Who we are

The role 

Collaborating closely with our dynamic team of product designers and engineers, you will play a pivotal role in shaping the foundation of frontend at Helsing. Embracing a hands-on approach, you'll not only lead by example, but also spearhead the development and expansion of a tight-knit team that works across a wide-range of internal teams and products. Your primary emphasis will be on enhancing usability, creating re-usable foundations for multiple front-ends and optimising the end-user experience across the entire company.

The day-to-day

• Review code contributions, proposals, and RFCs from colleagues. At Helsing we strongly believe that unblocking others takes precedence over spending more time on your own work.

• Own the user interface end-to-end, from early wireframes and prototypes through to performant, production-ready code. You'll work closely with product and UX colleagues to shape how users interact with our tools. We have relatively few frontend engineers at Helsing; this means that we operate at a high level of autonomy and there are plenty of opportunities for impactful work.

• Propose and implement new features, capabilities, tooling, visualizations, or even full products across our stack. We encourage our engineers to look beyond their immediate team for missed opportunities, and to speak up when they identify one.

• Establish and evolve our React component library, ensuring consistency, reusability, and alignment with our visual design standards across multiple front-ends.

• Collaborate with others beyond your team and share knowledge with the wider frontend community at Helsing. Contribute to establishing our frontend engineering standards. Build or adopt tools that help enforce these standards, or make our frontend engineers more efficient in a different way.

• Become a mentor, find a mentee, and help support and develop our interviewing pipeline. The people make or break the company, and we want as many engineers as possible to be part of fostering and growing the organisation.

• Share your experience and technical know-how with other Helsingers. We host tech talks, get together for smaller "let's learn together" groups, run topical office hours or reading groups (e.g., on React or TypeScript), etc. to help each other get better with time.

• Connect with, understand, and make changes to backend systems as needed. Our backends are primarily written in Rust, and you'll need to be comfortable navigating unfamiliar codebases to unblock yourself and improve integrations. Rust experience is not a prerequisite to this role, though - you can learn that over time as needed.

• Present your work at our weekly demo sessions. We want engineers to come together around what they are working on and to feel like they are not endlessly squirrelling away at something that doesn't matter. To that end, we host (and actively work towards) demo sessions that allow early feedback, celebration of progress, and a better shared understanding of everything that goes on at Helsing.

You should apply if you

• Can write legible, maintainable, and performant frontend code - ideally using TypeScript and React.

• Are experienced with APIs and server-client communication like REST and GraphQL.

• Have experience with running a live production software.

• Are passionate about staying on top of current development best practices, libraries and frameworks.

• Are comfortable working with unfamiliar backends, ideally with some exposure to languages like Rust.

• Communicate well in English, both verbally and in writing.

• Enjoy collaborating with others, including reviewing code and pair programming.

• Are comfortable working asynchronously (writing PRs and RFCs, having discussions by email).

• Strive to improve yourself, your peers, and the culture you work in over time.

• Feel like ethical considerations are an inherent part of engineering.

Note: We operate at an intersection where women, as well as other minority groups, are systematically under-represented. We encourage you to apply even if you don’t meet all the listed qualifications; ability and impact cannot be summarised in a few bullet points.

Join Helsing and work with world-leading experts in their fields 

• Helsing’s work is important. You’ll be directly contributing to the protection of democratic countries while balancing both ethical and geopolitical concerns

• The work is unique. We operate in a domain that has highly unusual technical requirements and constraints, and where robustness, safety, and ethical considerations are vital. You will face unique Engineering and AI challenges that make a meaningful impact in the world

• Our work frequently takes us right up to the state of the art in technical innovation, be it reinforcement learning, distributed systems, generative AI, or deployment infrastructure. The defence industry is entering the most exciting phase of the technological development curve. Advances in our field of world are not incremental: Helsing is part of, and often leading, historic leaps forward

• In our domain, success is a matter of order-of-magnitude improvements and novel capabilities. This means we take bets, aim high, and focus on big opportunities. Despite being a relatively young company, Helsing has already been selected for multiple significant government contracts

• We actively encourage healthy, proactive, and diverse debate internally about what we do and how we choose to do it. Teams and individual engineers are trusted (and encouraged) to practise responsible autonomy and critical thinking, and to focus on outcomes, not conformity. At Helsing you will have a say in how we (and you!) work, the opportunity to engage on what does and doesn’t work, and to take ownership of aspects of our culture that you care deeply about

Nice to have

• Significant recent experience with React.

• Familiarity with backend interface tools like REST, GraphQL, gRPC/Protocol Buffers.

• Established understanding of modern JS bundlers, such as Vite, and experience maintaining frontend infrastructure.

• Experience with styling utility-class libraries such as TailwindCSS and building reusable React component libraries.

• Data visualization expertise (e.g., D3.js, custom charting, or complex dashboard design).

• Background in designing software for aerospace, defense, or AI end users.

What we offer

• A focus on outcomes, not time-tracking

• Competitive compensation and VSOP options

• Relocation support

• Social and education allowances

• Regular company events and all-hands to bring together employees as one team across Europe

• A hands-on onboarding program (affectionately labelled “Infraduction”), in which you will be building tooling and applications to be used across the company. This is your opportunity to learn our tech stack, explore the company, and learn how we get things done - all whilst working with other engineering teams from day one 

Helsing is an equal opportunities employer. We are committed to equal employment opportunity regardless of race, religion, sexual orientation, age, marital status, disability or gender identity. Please do not submit personal data revealing racial or ethnic origin, political opinions, religious or philosophical beliefs, trade union membership, data concerning your health, or data concerning your sexual orientation.

As an AEM DevSecOps Engineer, you will oversee and automate our AEM infrastructure with a primary focus on security, reliability, and automated compliance. You will bridge the gap between development and operations by embedding security directly into the CI/CD pipeline and managing complex identity and content delivery architectures, including headless AEM and Auth0 integrations. Your role is pivotal in ensuring that our platform is not only high-performing but resilient against modern threats like DDoS attacks.

Key Responsibilities

• Identity & Access Management: Configure and manage Auth0 integrations for AEM, including token validation, OIDC/SAML configurations, and custom login modules to ensure secure user authentication.
• Headless Security: Oversee the security of AEM Headless deployments, including protecting GraphQL endpoints, managing CORS policies, and ensuring secure communication for decoupled front-end frameworks (React/Angular).
• Edge & CDN Protection: Manage and configure CDN (e.g., Cloudflare, Akamai, or Adobe-managed CDN) to optimize performance and implement DDoS mitigation strategies.
• Traffic Filtering: Implement and maintain Traffic Filter Rules and Web Application Firewall (WAF) configurations at the CDN level to block malicious spikes and sophisticated application-layer attacks.
• Automated Security Scanning: Integrate security tools (SAST/DAST) and secrets detection into CI/CD pipelines (Jenkins, GitLab) to identify vulnerabilities early in the development cycle.
• Environment Hardening: Install and manage AEM author, publish, and dispatcher instances with a focus on Dispatcher security hardening, SSL certificate automation, and ModSecurity configurations.
• Observability & Incident Response: Monitor system performance and security logs using tools like Splunk or New Relic to proactively address threats and performance bottlenecks.
• Compliance Auditing: Regularly audit the platform and its integrations (Adobe Analytics, Target) to ensure alignment with corporate security policies and industry standards.

Required Skills & Experience

• Experience: 5+ years in administering and securing AEM environments.
• Identity Services: Proven experience integrating Auth0 or similar Identity Providers (IdP) for enterprise-scale authentication.
• Architectural Knowledge: Strong understanding of Headless CMS security best practices, including API key management and JWT authentication.
• Network Security: Expertise in managing CDNs and implementing DDoS mitigation and WAF rules.
• Technical Stack: Proficiency in Apache Sling, JCR, OSGi, and web servers like Nginx or Apache.
• Automation: Hands-on experience with scripting (Python) and CI/CD tools (Jenkins, CircleCI) to automate security and deployment workflows.
• Cloud Experience: Experience with cloud-based AEM implementations, such as AEM as a Cloud Service (AEMaaCS) or AWS/Azure.
• Diagnostic Skills: Proficiency in analyzing log files, thread dumps, and heap dumps to resolve security incidents or performance outages.

• #LI-Rmote
• #LI-JB2
• P24849_3380782

Why Valtech? We’re the experience innovation company - a trusted partner to the world’s most recognized brands. To our people we offer growth opportunities, a values-driven culture, international careers and the chance to shape the future of experience. 

The opportunity

At Valtech, you’ll find an environment designed for continuous learning, meaningful impact, and professional growth. Whether you're pioneering new digital solutions, challenging conventional thinking or building the next generation of customer experiences, your work will help transform industries. 

We are proud of: 

• The work we do and the innovation we drive 
• Our values of share, care and dare 
• A workplace culture that fosters creativity, diversity and autonomy 
• Our borderless, global framework, which enables seamless collaboration 

The role  

We are looking for a Senior Python Engineer (AI & Cloud) to join a high-impact agile Task Force. You will be responsible for industrializing a Generative AI solution for a major French healthcare corporation, moving from POC to a production-ready MVP. 

You will thrive in this role if you are: 

• A Python & Cloud Expert: You have a strong command of GCP (Vertex AI) and integrating LLMs (Gemini, RAG architectures)
• A Precision-Oriented Developer: You can handle high-security constraints (HDS/GDPR) and complex data pipelines with a focus on accuracy (>90%)
• A Practical Innovator: You enjoy turning cutting-edge AI (Voice AI, NLU) into reliable industrial services
• A Collaborator: You value teamwork and knowledge-sharing within a cross-functional squad of Data and Salesforce experts. 

Must have qualifications

To be considered for this role, you must meet the following essential qualifications: 

• Deep understanding of Python internals, concurrency (asyncio), and design patterns
• Experience in building scalable and secure RESTful or GraphQL APIs
• Hands-on experience building and maintaining CI/CD pipelines (e.g., GitHub Actions, GitLab CI, or Jenkins) to ensure automated testing and seamless deployment
• Experience with system integrations and data processing
• Hands-on experience with AI / LLM uses cases
• Experience with API frameworks: FastAPI or Flask (Django not required)
• Cloud experience required: preferably GCP, but AWS is acceptable
• Understanding of cloud deployment patterns
• Teamwork experience
• Proactive, collaborative mindset, quick learner
• Good English communication skills (reading, writing, speaking) 

Nice to have qualifications  

• Proficiency in Infrastructure as Code (Terraform)
• Knowledge of container orchestration (Kubernetes) 

If you do not meet all the listed qualifications or have gaps in your experience, we still encourage you to apply. At Valtech, we recognize that talent comes in many forms, and we value diverse perspectives and a willingness to learn. 

Commitment to reaching all kinds of people 

We design experiences that work for all kinds of people - and that starts with our own teams. At Valtech, we’re intentional about building an inclusive culture where everyone feels supported to grow, thrive and achieve their goals. No matter your background, you belong here. Explore our Diversity & Inclusion site to see how we’re creating a more equitable Valtech for all. 

The benefits  

This is a position based in Bulgaria. 

Beyond a competitive compensation package, we offer: 

• Flexibility, with remote and hybrid work options and 25 vacation days for a healthy work-life balance
• Co-subsidized transportation & Multisport cards
• Premium health insurance for fast and easy access to top healthcare services
• Training policy for technical and other skills-related events, courses and certifications
• Personal career development roadmap guided by performance evaluations
• Self-care program offering psychological consultations & discussions for you and the team
• Cozy office space designed for comfort and productivity
• Exciting team events and company gatherings

Your application process

Once you apply, our Talent Acquisition team will review your application. Your CV should cover key information on relevant experiences and expertise. We do not require information such as age, gender, marital status, or a headshot in your application. We review all candidates based on skills, experience, and potential.

⚠️ Beware of recruitment fraud!

We are committed to inclusion and accessibility. If you need reasonable accommodations during the interview process, please either indicate it in your application or let your Talent Partner know. 

About Valtech

Valtech is the experience innovation company that exists to unlock a better way to experience the world. By blending crafts, categories, and cultures, we help brands unlock new value in an increasingly digital world. 

At the intersection of data, AI, creativity, and technology, we drive transformation for leading organizations, including L’Oréal, Mars, Audi, P&G, Volkswagen Dolby, and more. 

At Valtech, we don’t just talk about transformation. We make it happen. Our people are the heart of our success, and we foster a workplace where everyone has the support to thrive, grow and innovate. 

Are you ready to create what’s next? Join us.

Why Valtech? We’re the experience innovation company - a trusted partner to the world’s most recognized brands. To our people we offer growth opportunities, a values-driven culture, international careers and the chance to shape the future of experience. 

The opportunity

At Valtech, you’ll find an environment designed for continuous learning, meaningful impact, and professional growth. Whether you're pioneering new digital solutions, challenging conventional thinking or building the next generation of customer experiences, your work will help transform industries. 

We are proud of: 

• The work we do and the innovation we drive 
• Our values of share, care and dare 
• A workplace culture that fosters creativity, diversity and autonomy 
• Our borderless, global framework, which enables seamless collaboration 

The role  

We are looking for a Senior Python Engineer (AI & Cloud) to join a high-impact agile Task Force. You will be responsible for industrializing a Generative AI solution for a major French healthcare corporation, moving from POC to a production-ready MVP. 

You will thrive in this role if you are: 

• A Python & Cloud Expert: You have a strong command of GCP (Vertex AI) and integrating LLMs (Gemini, RAG architectures)
• A Precision-Oriented Developer: You can handle high-security constraints (HDS/GDPR) and complex data pipelines with a focus on accuracy (>90%)
• A Practical Innovator: You enjoy turning cutting-edge AI (Voice AI, NLU) into reliable industrial services
• A Collaborator: You value teamwork and knowledge-sharing within a cross-functional squad of Data and Salesforce experts. 

Must have qualifications

To be considered for this role, you must meet the following essential qualifications: 

• Deep understanding of Python internals, concurrency (asyncio), and design patterns
• Experience in building scalable and secure RESTful or GraphQL APIs
• Hands-on experience building and maintaining CI/CD pipelines (e.g., GitHub Actions, GitLab CI, or Jenkins) to ensure automated testing and seamless deployment
• Experience with system integrations and data processing
• Hands-on experience with AI / LLM uses cases
• Experience with API frameworks: FastAPI or Flask (Django not required)
• Cloud experience required: preferably GCP, but AWS is acceptable
• Understanding of cloud deployment patterns
• Teamwork experience
• Proactive, collaborative mindset, quick learner
• Good English communication skills (reading, writing, speaking) 

Nice to have qualifications  

• Proficiency in Infrastructure as Code (Terraform)
• Knowledge of container orchestration (Kubernetes) 

If you do not meet all the listed qualifications or have gaps in your experience, we still encourage you to apply. At Valtech, we recognize that talent comes in many forms, and we value diverse perspectives and a willingness to learn. 

Commitment to reaching all kinds of people 

We design experiences that work for all kinds of people - and that starts with our own teams. At Valtech, we’re intentional about building an inclusive culture where everyone feels supported to grow, thrive and achieve their goals. No matter your background, you belong here. Explore our Diversity & Inclusion site to see how we’re creating a more equitable Valtech for all. 

The benefits  

This is a position based in Poland. 

Mental and physical health:

• 24 working days of paid vacation
• National holidays covered
• Sick leave (up to 20/year)
• Unpaid leave (up to 20/year)
• Medical insurance
• Multisport card OR Multikafeteria
• Maternity & paternity leave support

Personal and professional development:

• Internal workshops & learning initiatives
• Professional certifications reimbursement
• Participation in professional local & global communities
• Growth Framework to manage expectations and define the steps to move towards the selected career
• Mentoring program with the ability to become a mentor or a mentee to grow to a higher position

Valtech Poland has a system of progressive benefit packages – the longer you stay with the company, the more benefits you get!

Beyond a competitive compensation package, we offer: 

• Flexibility, with remote and hybrid work options (country-dependent) 
• Career advancement, with international mobility and professional development programs 
• Learning and development, with access to cutting-edge tools, training and industry experts 

Your application process

Once you apply, our Talent Acquisition team will review your application. Your CV should cover key information on relevant experiences and expertise. We do not require information such as age, gender, marital status, or a headshot in your application. We review all candidates based on skills, experience, and potential.

⚠️ Beware of recruitment fraud!

We are committed to inclusion and accessibility. If you need reasonable accommodations during the interview process, please either indicate it in your application or let your Talent Partner know. 

About Valtech

Valtech is the experience innovation company that exists to unlock a better way to experience the world. By blending crafts, categories, and cultures, we help brands unlock new value in an increasingly digital world. 

At the intersection of data, AI, creativity, and technology, we drive transformation for leading organizations, including L’Oréal, Mars, Audi, P&G, Volkswagen Dolby, and more. 

At Valtech, we don’t just talk about transformation. We make it happen. Our people are the heart of our success, and we foster a workplace where everyone has the support to thrive, grow and innovate. 

Are you ready to create what’s next? Join us.

About the role:

The Platform Reports team sits at the heart of our data ecosystem, with a mission to empower our customers with insights. We build and own the core platform that enables users to create custom reports and dashboards using the full breadth of their data. Internally, we act as a critical accelerator for all product teams, providing a unified integration point that makes their data instantly reportable. Our team owns the end-to-end report lifecycle—from fetching and transforming to visualizing—and we're pushing the boundaries of user experience with innovative features like our conversational AI report builder.

Samsara uses Golang for our backend, Typescript and React for our web client, GraphQL to fetch data from our backend, and React Native for our mobile app. Direct experience with these technologies is not required.

This is a remote position open to candidates in the United Kingdom. Relocation assistance will not be provided for this role.

You should apply if:

• You want to impact the industries that run our world: The software, firmware, and hardware you build will result in real-world impact—helping to keep the lights on, get food into grocery stores, and most importantly, ensure workers return home safely.
• You want to build for scale: With over 2.3 million IoT devices deployed to our global customers, you will work on a range of new and mature technologies driving scalable innovation for customers across industries driving the world's physical operations.
• You are a life-long learner: We have ambitious goals. Every Samsarian has a growth mindset as we work with a wide range of technologies, challenges, and customers that push us to learn on the go.
• You believe customers are more than a number: Samsara engineers enjoy a rare closeness to the end user and you will have the opportunity to participate in customer interviews, collaborate with customer success and product managers, and use metrics to ensure our work is translating into better customer outcomes.
• You are a team player: Working on our Samsara Engineering teams requires a mix of independent effort and collaboration. Motivated by our mission, we’re all racing toward our connected operations vision, and we intend to win—together.

In this role, you will: 

• Participate with senior leadership and cross-functional peers to develop a long-term roadmap and strategy for Samsara’s telematics feature sets
• Collaborate with senior engineers to drive technical strategy
• Set quarterly goals and balance product/engineering priorities for maximum impact
• Drive planning and execution on the roadmap, delivering features and infrastructure enhancements to delight customers
• Set a high-standard for the reliability of your components
• Champion, role model, and embed Samsara’s cultural principles (Focus on Customer Success, Build for the Long Term, Adopt a Growth Mindset, Be Inclusive, Win as a Team) as we expand and scale our mobile presence (more apps across more geographies)
• Hire, develop and lead an inclusive, engaged, and high-performing team

Minimum requirements for the role:

• Experience building scalable, mission-critical SaaS applications
• Experience operating, maintaining, and improving upon large scale application services
• Strong interpersonal communication skills (including listening, speaking, and writing) and ability to work well in a diverse, team-focused environment
• Strong track record of delivering products and features that customers love
• Proven record of attracting top-talent and coaching the team
• 8+ years of relevant software engineering work experience
• 3+ years of hands-on technical management experience
• You speak English proficiently

An ideal candidate also has:

• B.S. in Computer Science or related technical discipline
• Experience building data pipelines and/or data analytics products
• Exposure to query engine optimizations

About the role:

The Platform Reports team sits at the heart of our data ecosystem, with a mission to empower our customers with insights. We build and own the core platform that enables users to create custom reports and dashboards using the full breadth of their data. Internally, we act as a critical accelerator for all product teams, providing a unified integration point that makes their data instantly reportable. Our team owns the end-to-end report lifecycle—from fetching and transforming to visualizing—and we're pushing the boundaries of user experience with innovative features like our conversational AI report builder.

Samsara uses Golang for our backend, Typescript and React for our web client, GraphQL to fetch data from our backend, and React Native for our mobile app. Direct experience with these technologies is not required.

This is a remote position open to candidates in Poland. Relocation assistance will not be provided for this role.

You should apply if:

• You want to impact the industries that run our world: The software, firmware, and hardware you build will result in real-world impact—helping to keep the lights on, get food into grocery stores, and most importantly, ensure workers return home safely.
• You want to build for scale: With over 2.3 million IoT devices deployed to our global customers, you will work on a range of new and mature technologies driving scalable innovation for customers across industries driving the world's physical operations.
• You are a life-long learner: We have ambitious goals. Every Samsarian has a growth mindset as we work with a wide range of technologies, challenges, and customers that push us to learn on the go.
• You believe customers are more than a number: Samsara engineers enjoy a rare closeness to the end user and you will have the opportunity to participate in customer interviews, collaborate with customer success and product managers, and use metrics to ensure our work is translating into better customer outcomes.
• You are a team player: Working on our Samsara Engineering teams requires a mix of independent effort and collaboration. Motivated by our mission, we’re all racing toward our connected operations vision, and we intend to win—together.

In this role, you will: 

• Participate with senior leadership and cross-functional peers to develop a long-term roadmap and strategy for Samsara’s telematics feature sets
• Collaborate with senior engineers to drive technical strategy
• Set quarterly goals and balance product/engineering priorities for maximum impact
• Drive planning and execution on the roadmap, delivering features and infrastructure enhancements to delight customers
• Set a high-standard for the reliability of your components
• Champion, role model, and embed Samsara’s cultural principles (Focus on Customer Success, Build for the Long Term, Adopt a Growth Mindset, Be Inclusive, Win as a Team) as we expand and scale our mobile presence (more apps across more geographies)
• Hire, develop and lead an inclusive, engaged, and high-performing team

Minimum requirements for the role:

• Experience building scalable, mission-critical SaaS applications
• Experience operating, maintaining, and improving upon large scale application services
• Strong interpersonal communication skills (including listening, speaking, and writing) and ability to work well in a diverse, team-focused environment
• Strong track record of delivering products and features that customers love
• Proven record of attracting top-talent and coaching the team
• 8+ years of relevant software engineering work experience
• 3+ years of hands-on technical management experience
• You speak English proficiently

An ideal candidate also has:

• B.S. in Computer Science or related technical discipline
• Experience building data pipelines and/or data analytics products
• Exposure to query engine optimizations

ABOUT THE ROLE 

We are looking for a passionate Backend Software Engineer who is enthusiastic about building scalable and performant backend services. You will be on the team that creates and expands Peloton’s e-commerce presence on the web, retail and other sales channels. You’ll build out the services and the infrastructure that delivers delightful experiences to Peloton’s passionate member community. Your work will positively impact the ability of members to interact and engage with Peloton’s ecommerce platform in new and meaningful ways. 

YOUR DAILY IMPACT AT PELOTON 

• Adhere to the highest engineering quality standards to ensure that systems are traceable, reliable, performant and scalable 
• Develop new backend features to support the delivery of experiences within Peloton’s products ● Build internal infrastructure and tooling as needed to support product features ● Work within an agile development environment with peer engineers, designers, and product 

managers on a daily basis to scope, develop and deliver a software experience that realizes the product strategy 

• Be a part of a positive and inclusive culture that is hyper-focused on cultivating engineer growth and learning 

YOU BRING TO PELOTON 

• 4+ years of software engineering experience 
• Experience with Java, Kotlin, Python or similar languages 
• Experience building and scaling out RESTful microservices 
• Familiarity with accessing, querying and writing to data stores like PostgreSQL, MongoDB, DynamoDB, Elasticsearch, etc. 
• Experience with Spring Boot, Docker, Kubernetes, gRPC, GraphQL 
• Experience in Unit Testing/Test Driven Development 
• Experience in cloud infrastructure like AWS/GCP 
• Solid understanding of git workflows in GitHub or similar git-based version control systems ● Support configuring and developing solutions for CI/CD with experience with tools like Github Actions, Jenkins, CircleCI or similar 
• Experience developing dashboards and sifting testing insights using tools like Datadog or similar observability tools 
• Ability to accomplish complex engineering tasks independently and capacity to work in a high growth, fast-paced environment 
• Experience working on an ecommerce platform is a bonus

About the Role:
Kaseya is looking for an experienced Software Engineer (with Golang) to build the new Backup product.

As a Engineer, you'll take ownership of your code and collaborate with a skilled team of developers, QA engineers, and DevOps professionals. You'll be recognized not only for delivering robust, high-performance services but also for actively driving improvements in product quality and engineering processes.

This is a role for engineers who thrive in fast-moving agile environments, embrace accountability, and are eager to work on systems that require performance, reliability, and scale.

What You’ll Do:

• Take full ownership of backend feature development using Golang, from design through deployment and support
• Collaborate closely with cross-functional teams using Agile/Scrum methodology to refine requirements, estimate effort, and deliver value incrementally
• Design, build, and maintain secure, scalable, and performant microservices and APIs
• Resolve reported defects efficiently while delivering features that delight users
• Drive and uphold best practices in code quality, security, performance, and maintainability
• Contribute to code reviews, documentation, and mentoring within the engineering team

Required Skills & Experience:

• Bachelor’s degree in Computer Science or related technical field (or equivalent practical experience)
• 3+ years of experience in backend development with one or more of the following: C/C++/Java/Ruby/Python/R/Scala
• 1–3 years of professional experience with Golang
• Strong understanding of SQL databases (preferably MySQL), including query optimization and performance tuning
• Deep knowledge of design patterns, data structures, and algorithms in real-world use
• Experience with search technologies such as Elasticsearch, Solr, Lucene, or OpenSearch
• Hands-on experience with Docker, Git, Kubernetes, and virtualization technologies (e.g., OpenStack)
• Demonstrated use of professional software engineering best practices across the full SDLC: coding standards, code reviews, source control, CI/CD, testing, and operations
• Familiarity with Unix/Linux systems
• Preferred Qualifications:
  Experience building cloud-native applications on platforms like AWS
• Exposure to GraphQL, RESTful API design, and service-oriented architecture
• Knowledge of observability tools such as Prometheus, Grafana, ELK, or OpenTelemetry
• Experience with infrastructure-as-code (e.g., Terraform, Helm)
• Background in storage, backup, or disaster recovery systems is a strong plus

Why Join Kaseya:

At Kaseya, you’ll be a part of building a next-generation backup product from the ground up. You'll work alongside passionate professionals who value code quality, system reliability, and thoughtful design. This is a high-impact role where your contributions will be felt immediately—and your technical leadership will help shape the future of our global infrastructure.

What We Offer:

• Hybrid work model — 3 days/week in our Krakow office
• Collaborative and knowledge-sharing team culture
• Competitive salary & benefits

About the Role: 

Aura is looking for a Senior Full-Stack Engineer to help improve the overall experience of our product through improving the quality of the product features. 

What You’ll Do: 

• Develop features and improvements to the product in a secure, well-tested, and performant way

• Work in a cross-functional team that touches all of the core systems and user flows

• Suggest new approaches and best practices in software engineering and architecture design

What you bring to the table (required experience & skills)

• 5 + years of software engineering experience

• 1 + year React Native experience

• Production experience and advanced skills with React + Redux

• Knowledge of TypeScript

• Strong knowledge HTML/CSS/SCSS

• Product mindset

• Strong knowledge of data structures and algorithms

• Strong knowledge in architectural design, design patterns, design anti-patterns

• Solid Computer Science background

• Good knowledge with NodeJS, NPM would be a plus

• Experience with Native iOS (preferable) or Android development would be a plus

• Upper-Intermediate English level

Tech Stack:

• ReactNative

• TypeScript

• GQL

#LI-Remote

Role Summary and Impact 

As part of the Global Operations Centre (GOC), you will work closely with teams across the United States, Europe, and Asia to deliver high-impact solutions in a collaborative, multicultural environment. We are seeking a talented and passionate Frontend Engineer to join our Data & Technology Solutions team. You will be instrumental in crafting intuitive, engaging, and highly performant user interfaces for our data products and AI platforms, including the cutting-edge WPP Open platform. If you thrive on building beautiful and functional web applications, excel in modern JavaScript frameworks, and are eager to translate complex data into clear, user-friendly experiences within the dynamic AdTech space, we encourage you to apply. 

You are: 

• A craftsman of user experience, with a keen eye for detail and a commitment to building pixel-perfect, responsive, and accessible interfaces. 
• Proficient in modern frontend technologies, capable of writing clean, modular, and maintainable code. 
• Passionate about performance, always optimizing web applications for speed and efficiency. 
• A collaborative team player, eager to work closely with UX/UI designers, backend engineers, and product owners. 
• Continuously learning, staying abreast of the latest frontend trends, tools, and best practices. 

What You will do:

Design and Develop Engaging User Interfaces 

• Build, maintain, and evolve highly interactive and responsive web applications using modern JavaScript frameworks (e.g., React, Angular, Vue.js) and libraries. 
• Translate UI/UX design wireframes and mockups into high-quality code, ensuring technical feasibility and optimal user experience. 
• Develop reusable UI components and frontend libraries to maintain consistency and accelerate development across our product suite. 
• Contribute to the entire frontend development of lifecycle, from conceptualization and design input to deployment and maintenance. 

Integrate with Backend Services and Data 

• Integrate frontend applications with RESTful APIs, GraphQL endpoints, and other backend services to fetch and display dynamic data. 
• Implement data visualization components and dashboards to present complex analytical insights in an intuitive and actionable manner. 
• Collaborate closely with backend engineers to define API contracts and optimize data flow for frontend consumption. 
• Ensure the technical feasibility of UI/UX designs and provide constructive feedback on potential implementation challenges. 

Ensure Quality, Performance, and Accessibility 

• Write comprehensive unit, integration, and end-to-end tests to ensure the reliability and stability of frontend applications. 
• Optimize web applications for maximum speed and scalability, addressing performance bottlenecks and ensuring a smooth user experience. 
• Implement web accessibility standards (e.g., WCAG) to ensure our products are usable by the widest possible audience. 
• Participate in code reviews, providing constructive feedback and ensuring adherence to coding standards and best practices. 

Collaborate and Innovate 

• Work effectively within an Agile team, participating in sprint planning, stand-ups, reviews, and retrospectives. 
• Contribute to technical discussions, architectural decisions, and provide expertise on frontend best practices. 
• Mentor junior developers and share knowledge across the team to foster a culture of continuous learning and improvement. 
• Research and evaluate new frontend technologies and tools to enhance our development processes and product capabilities. 

Skills and Experience 

If this opportunity looks right for you, we are looking for candidates who have:  

• 3+ years of professional experience in frontend web development 
• Strong proficiency in HTML5, CSS3, and modern JavaScript 
• Extensive experience with at least one modern JavaScript framework, such as Angular, React.js. 
• English fluency B2/C1 
• Solid understanding of state management patterns and libraries  
• Experience with CSS preprocessors  
• Familiarity with module bundlers  
• Proficiency in writing automated tests for frontend applications (e.g., Jest, React Testing Library, Cypress, Playwright). 
• Experience consuming RESTful APIs. Familiarity with GraphQL is a plus. 
• Bachelor's degree in Computer Science, Engineering, or a related technical field, or equivalent practical experience. 
• Experience with data visualization libraries (e.g., D3.js, Chart.js, Plotly) is highly desirable.

Life at WPP Media & Benefits 

Our passion for shaping the next era of media includes investing in our employees to help them do their best work, and we’re just as committed to employee growth as we are to responsible media investment. WPP Media employees can tap into the global WPP Media & WPP networks to pursue their passions, grow their networks, and learn at the cutting edge of marketing and advertising. We have a variety of employee resource groups and host frequent in-office events showcasing team wins, sharing thought leadership, and celebrating holidays and milestone events. Our benefits include access to internal learning platforms, certifications, and training sessions, life insurance, medical care & sports card in Medicover, funding for English language learning, employee mental health awareness day, and more.  

WPP Media is an equal opportunity employer and considers applicants for all positions without discrimination or regard to particular characteristics. We are committed to fostering a culture of respect in which everyone feels they belong and has the same opportunities to progress in their careers. We are committed to offering equal opportunities to all employees, which is why we only establish collaborations based on employment contracts. 

We believe the best work happens when we're together, fostering creativity, collaboration, and connection. That's why we’ve adopted a hybrid approach, with teams in the office two days a week. If you require accommodations or flexibility, please discuss this with the hiring team during the interview process. 

Following a detailed review of all applications, we will contact those candidates whose qualifications and stated terms of cooperation most closely align the objectives of our recruitment process.

The controller of your personal data is the WPP Media Poland sp. z o.o.The personal data you provide will be processed for the purpose of the recruitment process.  By providing us with personal data beyond the scope required by the Labour Code, you consent to the processing of such data for the purposes of the recruitment process.  Consent may be withdrawn at any time. Withdrawal of consent does not affect the lawfulness of the processing carried out prior to its withdrawal. For evidence purposes, please withdraw your consent in writing or by email to RODO@wppmedia.com. 

❗️Please note that this role is office based for Valencia, Spain (RAS Valencia - Servicios Profesionales de Recursos Humanos).

❗️If you need to be relocated, we take care of the process.

We are developing an innovative platform for intelligent gameplay analysis and complex in-game scenario automation. Our team builds internal tooling that bridges the gap between Computer Vision, text analysis, and modern LLM architectures to achieve deep, real-time understanding of game mechanics.

Key Responsibilities:

• Core Development: Designing and maintaining an in-house AI-powered service for intelligent automation.
• Computer Vision: Training and calibrating Object Detection and Classification models (CNNs, DETR) on unique proprietary datasets.
• Intelligent Analysis: Integrating OCR solutions and LLMs to interpret data and structure information from dynamic content.
• MLOps: Building pipelines for model retraining based on "low-confidence" predictions (Active Learning).
• Infrastructure: Containerizing solutions and ensuring their scalability and performance.

Our Tech Stack & Requirements:

• Experience: 4+ years in software development (Backend / Full Stack / SDET).
• AI/ML Background: Proven hands-on experience with Detection Transformers (DETR) or modern CNN architectures.
• LLM & Agents: Understanding of AI Agent principles; experience building tools and integrations with LLMs (LangChain, Indexing, Tool-use).
• Python: Strong proficiency in Python and experience in AI tool development.
• Engineering Excellence: Deep understanding of TDD, clean architecture principles, and database management (PostgreSQL/MySQL).
• Networking: Experience designing APIs (REST, GraphQL, WebSockets).
• English: Upper-Intermediate (technical documentation, professional communication).

Nice to Have:

• Experience with Kubernetes and Docker.
• Understanding of microservices architecture.
• Experience setting up CI/CD pipelines (GitLab CI, GitHub Actions).

Work with HelloFresh in Warsaw and its HelloTech organisation, HelloFresh’s global technology backbone with more than 1000 people, building the digital products that power our end-to-end food experience. From meal kits and ready-to-eat meals to specialty offerings like pet food and premium meat & seafood, HelloTech creates the platforms that bring tailored food solutions to millions of customers every month.

Our subscription-based, direct-to-consumer model relies on technology at every step, from customer-facing apps and personalization logic to pricing, forecasting, supply chain optimization, and initiatives that help reduce food waste. While our brands operate independently to serve distinct customer needs, they are united by shared platforms, data, and operational excellence built by HelloTech.

HelloTech works in autonomous, cross-functional alliances, each owning a specific product or domain end to end. By working with our Warsaw office, you will help shape scalable, data-driven products used across our markets, working with a modern tech stack and international teams to continuously improve how people discover, order, and enjoy HelloFresh’s products, today and in the future.

About the role: What's in the Box

The position is part of the Active Journey Alliance, which has the mission to maximize retention of active customers. Active Journey Alliance helps customers to create habits with our products, manage their subscription, order the products they love and provide help in the face of errors. 

Backend Engineers assume development and operational responsibility for the HelloFresh platform that serves millions globally to deliver the best experience for our customers and internal users. 

At HelloTech, flexibility and cross-functional collaboration are core to how we work. While this role is aligned to a specific Alliance, strong candidates may also be considered for opportunities across different teams or projects.

What you’ll do: The Recipe

• Work on of the architecture, design, development, deployment and operations of the microservices you will develop, using DevOps practices, pair programming and other cutting edge methodologies 

• Be active, solution-oriented member of autonomous, cross-functional agile teams collaborating with Product Owners, Front-end Engineers, Designers, and Business Intelligence teams 

• Having an in-depth understanding of HelloFresh’s core product and architecture, and act as ambassador for software solutions offering support and mentorship to colleagues 

• Work with state-of-the-art technologies like Golang, Kafka, Docker, Kubernetes and more

What you’ll bring: The Ingredients 

• Solid hands-on experience working with AI coding agents (e.g., Claude Code, Cursor, Copilot) beyond casual experimentation. You use AI agents as thought partners to onboard on unfamiliar codebases and navigate new areas of the code with confidence. You have a practical sense of how the context you provide to AI tools - specifications, constraints, examples - shapes output quality, and a developing awareness of how agentic outputs can fail, with growing habits around verifying, testing, and setting boundaries on AI-generated work.

• Strong background in backend development, with a focus on microservices and distributed systems

• Proven ability to build event-driven architectures using messaging technologies such as RabbitMQ, Kafka, or AWS SQS/SNS

• Proficiency in Go and/or PHP is preferred; experience with JVM languages and a willingness to learn Golang is also welcome

• Practical knowledge of Docker, container orchestration tools like Kubernetes, and CI/CD implementation

• Solid foundation in testing practices, including both unit and end-to-end testing

• Deep understanding of relational databases

• Familiarity with MongoDB, Elasticsearch, and/or GraphQL is a plus

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.

#Engineering

• Paid holidays and flexible, take-it-as-you-need-it scheduled time off
• A culture built on innovation that values big ideas, no matter where they come from
• A MacBook set up and ready from day one, plus a $500 stipend to design your ideal workspace
• Central European Time (CET) hours to support a balanced schedule for our Poland-based team
• Equity in a rapidly growing startup backed by top-tier VCs

🚀 About the role

• As a Senior Staff Software Engineer, you are a critical individual contributor and architectural leader within our engineering organization. You drive the long-term technical vision of our platform, guiding how we design, build, and evolve scalable, reliable systems across multiple squads. As a high-impact, high-autonomy technical leader, you combine deep technical contributions with influential cross-team collaboration, helping shape the future of our platform to better serve our customers.
• You serve as a trusted technical partner to Engineering Managers, Directors, and Product leadership, taking ownership of our most complex technical challenges while mentoring engineers across the organization. You play a pivotal role in our transition from a monolithic Ruby on Rails application toward a modern, distributed, event-driven, domain-oriented architecture. Our team is passionate, empathetic, hard working, and above all else focused on improving the lives of our service professionals (our Pros). Our success is their success.

Compensation: 11,300 - 12,500 USD per month (B2B)

🚀Being a Senior Staff Engineer at Housecall Pro means:

• Building a product that improves users’ lives (75k unique daily users, 4.6 ⭐at App Store) - learn more about the Housecall Pro mission
• Ensure the performance, quality, and responsiveness of applications
• Collaborating with a mature, interdisciplinary dev team, engineering leaders, and architects to design and deliver high-performance, scalable, and reliable architecture
• Understand clear sub-system boundaries, and make recommendations on where functionality belongs across different sub-systems
• Develop and maintain code quality standards and enforce them across the org
• Proactively identify and drive architectural enhancements and strategic refactorings that improve system scalability, performance, and long-term maintainability.
• Design and implement automated tests at the most effective architectural layer to maximize signal, minimize brittleness, and ensure long-term maintainability.
• Conduct code reviews and architectural reviews for features developed by other members of the team
• Lead code and architectural reviews to ensure alignment with system design principles, promote engineering excellence, and elevate the quality and resilience of team-delivered features.
• Maintain and improve our continuous integration and development environments
• Being a mentor for other engineers across the organization

🚀  What do you need to get this job?

• 9+ years of experience designing, building, and operating complex production systems
• Deep experience in modern backend frameworks (e.g., Ruby on Rails, Django, Spring Boot); we primarily use Ruby/RoR, but welcome strong systems thinkers from other stacks
• Proficiency in multiple programming languages (i.e. JavaScript, Python, Go, Java, Node.js)
• Deep expertise with cloud platforms (i.e. AWS), containerization, and serverless/cloud-native architectures
• Proven success applying Domain-Driven Design (DDD) principles across multiple teams or domains
• Experience in architecting and building event-driven systems using distributed messaging tools (i.e. Kafka, SQS)
• Experience with defining and improving CI/CD pipelines (e.g., Jenkins, Gitlab, etc) and automated testing strategies (e.g., e2e, canary tests, integration tests, etc)
• Expertise in scalable API design and management (i.e. RESTful APIs; GraphQL is a plus)
• Strong background in system observability practices (logs, metrics, tracing) and performance diagnostics
• Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent work experience
• A strong passion for using AI technologies to enhance productivity, quality, and innovation
• Curiosity and drive to stay ahead of emerging AI/ML technologies and their practical applications
• Ownership mentality with a balance of urgency and long-term system health

Sounds interesting?

We're waiting for your resume!

This role is open to candidates in Poland. The specific salary for the successful candidate will be determined based on permissible, non-discriminatory factors such as skills and experience. 

Location: Poland

We Are:

RTB House is a global company that provides state-of-the-art marketing technologies for top brands and agencies worldwide. Its proprietary ad-buying engine is the first in the world to be powered entirely by Deep Learning algorithms, enabling advertisers to generate outstanding results and reach their goals at every stage of the funnel.

We are looking for a Backend Python Developer to join our internal team at RTB House. You will work on applications and tools that directly support our real-time bidding business, collaborating with experienced engineers and product teams. This position is ideal for developers who want to grow their skills, solve real-world problems, and build reliable software that makes a visible difference.

You Will:

• Design, develop, and maintain internal web applications responsible for ad campaigns management, e.g. configuration, monitoring, automation
• Implement jobs and processes to integrate internal services
• Contribute to the development of internal Python libraries and shared frameworks
• Write and maintain unit/integration tests to ensure code quality and reliability
• Identify issues and propose improvements to enhance performance, scalability, and stability
• Collaborate with cross-functional teams to deliver new features and improve existing workflows
• Apply best practices in application design, databases, and APIs

Desired Experience:

• Solid experience in backend development with Python
• Familiarity with relational databases and ability to write efficient SQL queries (PostgreSQL, BigQuery is a plus)
• Understanding of RESTful and GraphQL APIs conventions and best practices
• Experience in asynchronous programming
• Good understanding of system design concepts (e.g. scalability, caching, reliability) and willingness to learn more
• Experience with writing and maintaining tests
• Problem-solving skills and the ability to work methodically through technical challenges
• Good communication skills and ability to work in a team
• Fluency in English

Selected Technologies:

• Backend: Python, FastAPI
• Databases: PostgreSQL, BigQuery
• GraphQL: Ariadne
• Messaging: Google Pub/Sub
• Data Handling & Validation: Pydantic, dataclasses
• Testing: Pytest
• Monitoring: Sentry, Prometheus, Grafana
• CI/CD: GitHub Actions
• Cloud: GCP, Kubernetes

We Offer:

• Being part of a small team with a high degree of autonomy and decision-making 
• Access to the latest technology in the developed solution
• Opportunity to build and improve our own products, where long-term quality and reliability truly matter
• Participation in one of the most interesting projects of the online industry in Poland and one of the fastest growing technology companies in Europe
• Collaboration with flexible contract options (B2B or contract of mandate)

Apply now! 

You don't need to tick every box to apply. If you are passionate about digital marketing, send us your CV, and we'll review it.

At JetBrains, code is our passion. Ever since we started, back in 2000, we have been striving 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.

The Version Control Experience team is part of the IntelliJ Platform department. We focus on improving the version control workflows across all JetBrains IDEs. From the moment a user clones a project to exploring its branches and reviewing changes, our mission is to make working with Git and other VCS tools feel smooth, fast, and reliable. Our work spans multiple IDEs and directly impacts millions of users.

We’re looking for a Kotlin or Java developer to help us improve the VCS experience across JetBrains IDEs.

In this role, you’ll: 

• Improve core workflows such as cloning projects, switching branches, resolving conflicts, and viewing history.
• Develop and maintain VCS integration components used across multiple IDEs.
• Enhance integrations with GitHub and GitLab, making them more seamless and feature-rich.
• Contribute to architecture and performance improvements within the VCS subsystem.
• Work closely with UX designers and other product teams to polish and improve the VCS experience.
• Have an opportunity to work on features used by millions of developers every day, including your teammates and colleagues
• Have freedom of ideas - you are always encouraged to suggest and implement new features and improvements to existing workflows

We’d be happy to bring you on board if you: 

• Have strong development experience with Kotlin or Java.
• Are familiar with Kotlin coroutines and asynchronous programming.
• Are familiar with web-based APIs (REST, GraphQL).
• Are comfortable working with legacy code and gradually improving it.
• Are interested in developer tools and care about their usability.
• Are open to working with UI (Swing), or already have experience doing so.
• Strive to write clean, efficient, and maintainable code.
• Enjoy exploring how things work under the hood and aren’t afraid of technical complexity.

We would be especially thrilled if you: 

• Are a power user of Git. If you’re comfortable with rebase workflows, cherry-pick, resolving complex merge conflicts, and working with staging areas interactively, you’ll feel right at home.
• Understand Git internals such as the index, reflog, low-level merge strategies, or how Git represents history.
• Have experience with IntelliJ plugins or developer tools.
• Are familiar with UI/UX best practices.
• Experience with mobile development in Android

About the Team: 

We’re a relatively small, distributed team based in Munich, Amsterdam, Berlin, and Belgrade. We keep meetings minimal and collaboration focused and informal. We value empathy, clarity, and initiative – and we’re looking forward to welcoming a new teammate.

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.
• 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.

About the Role:

Aura's Direct-to-Consumer (D2C) Platform Experience & Growth team is responsible for the core Aura user experience. As a Senior Software Engineer, you will contribute to native app development with React Native to build delightful and effective onboarding, dashboard, and security-focused features. In this high-impact role, you will partner with a Product Manager and act as the technical expert on your projects, with responsibilities including architecture, implementation, testing, and deployment. You will build configurable, scalable features that enable rapid experimentation and data-driven decision-making. You will incorporate best practices with an emphasis on performance and stability.

What you bring to the table:

• 6 - 8+ years of professional software engineering experience.

• Demonstrated success in delivering complex, large-scale projects on time and with quality.

• Exceptional communication and collaboration skills, with the ability to articulate complex technical concepts to both technical and non-technical stakeholders in English.

• Expert proficiency with mobile development using React Native, Redux, TypeScript, GraphQL, and related testing frameworks.

• Experience developing native apps on either iOS or Android is highly desired.

• Proficiency with full-stack development using Node.js, TypeScript, and related technologies.

• Advanced knowledge of software design best practices, data structures, caching, and algorithms.

• Demonstrated ability and desire to learn new technologies.

• Experience using AI effectively in your day-to-day work

• Bachelor's Degree in Computer Science or a related field, or equivalent work experience.

#LI-Remote

About Tripadvisor 

The Tripadvisor Group connects people to experiences worth sharing, and aims to be the world’s most trusted source for travel and experiences. We leverage our brands, technology, and capabilities to connect our global audience with partners through rich content, travel guidance, and two-sided marketplaces for experiences, accommodations, restaurants, and other travel categories. The subsidiaries of Tripadvisor, Inc. (Nasdaq: TRIP), include a portfolio of travel brands and businesses, including Tripadvisor, Viator, and TheFork.

The Tripadvisor Experiences Engineering team is distributed across Europe and is responsible for the platform, mobile apps and all their supporting infrastructure. We run the systems that help operators build their businesses and those which enable third parties to utilise our inventory. We provide the tools which help our customer services team provide world class service to travellers and operators internationally.

About the Role

We’re looking for a Software Engineer II to join our fast-growing team. This role is open to candidates based within a commutable distance (generally up to 1.5 hours) of our office hub in Kraków. We embrace flexibility in where and how work gets done and also value meaningful in-person moments to connect and collaborate. You can expect a remote-first working model with periodic in-person gatherings at your closest office for team connection, planning, or other key moments.

At Tripadvisor our Engineers are versatile and enjoy working on a variety of technical challenges. This is a full-stack position in which you will be working mostly on the backend with some front end projects from time to time.

Within Tripadvisor we have a fun and friendly environment where the key objective is getting things done. Working closely alongside product managers and designers, our engineers are part of the full process from software design, to code, to test, to deployment and back again. Most of our engineers release code to production every few days and we have a daily release cycle.

Tripadvisor's web stack includes Java, React, Typescript, GraphQL, Kubernetes, SQL and NoSQL databases, and runs on AWS. You don’t need to have experience with everything listed and will be able to complete coding languages in any language of your choice. You do need to be hungry to learn and will learn our tech stack on the job, if you don't know it already.

What We Offer 

• Competitive compensation packages (routinely benchmarked against the latest industry data), including base salary and annual bonuses
• “Work your way” with flexibility to suit your lifestyle. Tripadvisor Group takes a remote-friendly approach to collaboration across a worldwide team, with the option to join on-site as often as you’d like or as required by your team.
• Flexible schedule. Work-life balance is ingrained in our culture by design. Trust and accountability make it work.
• Donation matching. Give back? Give more! We match qualifying charitable donations annually.
• Tuition assistance. Want to level up your career? We love to hear it! Receive annual support for qualified programs.
• Lifestyle benefit. An annual benefit to spend on yourself. Use it on travel, wellness, or whatever suits you.
• Travel perks. We believe that travel is employee development, so we provide discounts and more.
• Employee assistance program. We’re here for you with resources and programs to help you through life’s challenges.
• Health benefits. We offer great coverage and competitive premiums.
• Generous referral scheme. Help us grow and be rewarded with generous awards for referring successful candidates.

Our Cultural Pillars:

Traveler first

We exist to create value for our customer, the traveler. We enable our suppliers and partners to unlock this value. Their collective behaviors and insights are what drives us. 

Execution is our edge

We act fast, experiment, learn from failure, iterate, and improve the solutions of tomorrow across every aspect of our business. Our execution is agile, data-driven, prioritised, and built to scale. We assume no problem is someone else’s problem and finish what can be done today, knowing tomorrow will bring fresh challenges. 

We succeed together

The best outcomes are driven by empathic, humble, and diverse subject matter experts working toward shared goals. We collaborate relentlessly, challenge assumptions, give actionable feedback, and set each other up for success through empowered teams with a clear charter. We transparently take ownership of our growth, individually and as a team. We celebrate the quality of our effort, our learnings, and our collective achievements.

We strive to create an accessible and inclusive experience for all candidates. If you need a reasonable accommodation during the application or the recruiting process, please make sure to reach out to your individual recruiter or our team at AccessibleRecruiting@tripadvisor.com.

If you have any additional questions about careers at Tripadvisor you can email us at recruitment@tripadvisor.com. We have all the answers!

About Tripadvisor

The Tripadvisor Group connects people to experiences worth sharing, and aims to be the world’s most trusted source for travel and experiences. We leverage our brands, technology, and capabilities to connect our global audience with partners through rich content, travel guidance, and two-sided marketplaces for experiences, accommodations, restaurants, and other travel categories. The subsidiaries of Tripadvisor, Inc. (Nasdaq: TRIP), include a portfolio of travel brands and businesses, including Tripadvisor, Viator, and TheFork.

The Tripadvisor Experiences Engineering team is distributed across Europe and is responsible for Tripadvisor.com, the Tripadvisor mobile apps and all their supporting infrastructure. We run the systems that help operators build their businesses and those which enable third parties to utilise our inventory. We provide the tools which help our customer services team provide world class service to travellers and operators internationally.

About the Role

We’re looking for a Senior Software Engineer to join our fast-growing team. This role is open to candidates based within a commutable distance (generally up to 1.5 hours) of our office hub in Kraków. We embrace flexibility in where and how work gets done and also value meaningful in-person moments to connect and collaborate. You can expect a remote-first working model with periodic in-person gatherings at your closest office for team connection, planning, or other key moments.

At Tripadvisor our Engineers are versatile and enjoy working on a variety of technical challenges. This is a full-stack position in which you will be working mostly on the backend with some front end projects from time to time.

Within Tripadvisor we have a fun and friendly environment where the key objective is getting things done. Working closely alongside product managers and designers, our engineers are part of the full process from software design, to code, to test, to deployment and back again. Most of our engineers release code to production every few days and we have a daily release cycle.

Tripadvisor's web stack includes Java, React, Typescript, GraphQL, Kubernetes, SQL and NoSQL databases, and runs on AWS. You don’t need to have experience with everything listed and will be able to complete coding languages in any language of your choice. You do need to be hungry to learn and will learn our tech stack on the job, if you don't know it already.

Perks of Working at Tripadvisor

• Competitive compensation packages, including base salary, annual bonus, and more.
• “Work your way” with flexibility to suit your lifestyle. We take a remote-friendly approach to collaboration, with the option to join on-site as often as you’d like in select locations. 
• Flexible schedule. Work-life balance is ingrained in our culture by design. Trust and accountability make it work.
• Donation matching. Give back? Give more! We match qualifying charitable donations annually.
• Tuition assistance. Want to level up your career? We love to hear it! Receive annual support for qualified programs.
• Lifestyle benefit. An annual benefit to spend on yourself. Use it on travel, wellness, or whatever suits you.
• Travel perks. We believe that travel is employee development, so we provide discounts and more.
• Employee assistance program. We’re here for you with resources and programs to help you through life’s challenges.
• Health benefits. We offer great coverage and competitive premiums.

Our Values

We aspire to lead; We’re relentlessly curious;... want to know more? Read up on our values: 

• We aspire to lead. Tap into your talent, ambition, and knowledge to bring us – and you – to new heights.
• We’re relentlessly curious. We push beyond the usual, the known, the “that’s just how it’s done.”
• We’re better together. We learn from, accept, respect, support, and value one another– and are creating something remarkable in the process.
• We serve our customers, always. We listen, question, respond, and strive for wow moments.  

We strive for better, not perfect. We won’t get it right the first time – or every time. We’ll provide a safe environment in which to make mistakes, iterate, improve, and grow.

Our workplace is for everyone, as is our people powered platform. At Tripadvisor, we want you to bring your unique identities, abilities, and experiences, so we can collectively revolutionize travel and together find the good out there.

Application process

• 30 minute call with a recruiter to learn more about the role
• 1 hour technical coding interview with someone from the Tripadvisor Engineering team
• Three one-hour interviews with members of the team, covering technical topics - including some coding - and what you would bring to Tripadvisor .

We strive to create an accessible and inclusive experience for all candidates. If you need a reasonable accommodation during the application or the recruiting process, please make sure to reach out to your individual recruiter or our team at greenhouse@tripadvisor.com.

#LI-Tripadvisor

Vonage's Applications:

Our Applications business unit focuses on delivering a suite of advanced communication tools designed to enhance customer engagement. From cloud contact centers to feature-rich unified communications solutions, our Applications team is dedicated to providing businesses with the tools they need to streamline operations and improve customer experiences.

Why this role matters:

Vonage is looking for a hands-on SDET (Mid–Senior Level) to strengthen automation engineering across our modern microservices-based communications platform.
This role is deeply technical and delivery-focused. You will design and implement scalable automation solutions across UI, API, performance, and mobile layers, ensuring quality is embedded throughout the SDLC.

As part of the QA Centre of Excellence (QA COE), you will collaborate with engineering squads to build reliable, CI/CD-ready automation frameworks and promote best practices in BDD, microservices testing, and observability.

Your key responsibilities:

What you'll bring

Required:

• 5–8 years of experience in automation engineering or SDET roles.
• Strong hands-on experience with: Playwright (TypeScript), API automation (REST/GraphQL) and BDD frameworks (Cucumber/Gherkin)
• Experience working within AWS-based environments.
• Strong understanding of distributed systems, microservices testing.
• Experience integrating automation into CI/CD pipelines.
• Working knowledge of performance testing with K6.
• Strong coding, debugging, and analytical skills.
• Experience collaborating within cross-functional Agile teams.

Experience we consider a plus:

• Experience with Docker, Kubernetes, or EKS.
• Familiarity with contract testing tools.
• Exposure to telecom or communications platforms.
• Mobile automation experience with Appium.
• Experience contributing to shared, cross-team automation frameworks.

How you’ll benefit:

• Discretionary Time Off
• Private Medical Healthcare
• Pension scheme
• Ericsson support line
• Hybrid work
• Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process

#LI-KS

QA Engineer – ReadyAPI 

• Build and shape development practices on a tangible industry, a leading API development product.
• Play a critical role in technical implementation, customer usage models, and the development of test plans and test suites.
• Tech stack: JavaScript, HTTP, REST, Websockets, GraphQL, SOAP, gRPC, Apache Kafka, Git, Docker

Product intro 

ReadyAPI allows teams to create, manage, and execute automated functional, security, and performance tests in one centralized interface. 

With ReadyAPI development teams around the world (e.g. NASA, FedEx, ...) can test API types like REST, SOAP, Apache Kafka, MQTT.  Record live API traffic, or virtualizing web services to remove pipeline dependencies. Finally integrates with GIT, JIRA, Slack, Jenkins and many more development tools. 

Go to our product page if you want to know more about ReadyAPI 

You can even have a free trial to check it out 😊  

About the role 

As a QA Engineer you will work with acceptance testing, regression testing, test automation and overall providing the highest quality experience to users. 

• Identify business requirements and work closely with the product owner, developers to find solutions, providing feedback and ensuring they are fit for purpose 
• Write acceptance criteria for requirements 
• Perform manual testing (exploratory and non-functional) and log results 
• Review results of automated tests and log defects 
• Performance, stress test 
• Identify, maintain and drive bespoke test automation solutions 
• Monitor and measure test coverage to improve test scenarios 
• Provide feedback/input on the techniques, solutions and tools used throughout projects 

We are looking for you if you have:  

• Experience with JavaScript for test automation, tools and frameworks such as SoapUI, ReadyAPI or other API testing tools, Cypress 
• BDD approach to software development
• Experience in test automation within an Agile environment 
• A risk-based approach to testing 
• Non-functional aspects of web application testing, such as UI, Accessibility, Security and Performance
• Experience in following would be a big plus: MQTT, JIRA, OAuth2, JMS, Jenkins, AWS 

Why you should join the SmartBear crew: 

• You can grow your career at every level. 
• We invest in your success as well as the spaces where our teams come together to work, collaborate, and have fun.
• We love celebrating our SmartBears; we even encourage our crew to take their birthdays off.
• We are guided by a People and Culture organization - an important distinction for us. We think about our team holistically – the whole person. 
• We celebrate our differences in experiences, viewpoints, and identities because we know it leads to better outcomes. 

Did you know? 

• Our main goal at SmartBear is to make our technology-driven world a better place. 
• SmartBear is committed to ethical corporate practices and social responsibility, promoting good in all the communities we serve. 
• SmartBear is headquartered in Somerville, MA with offices across the world including Galway Ireland, Bath, UK, Wroclaw, Poland and Bangalore, India. 
• We’ve won major industry (product and company) awards including B2B Innovators Award, Content Marketing Association, IntellyX Digital Innovator and BuiltIn Best Places to Work.

SmartBear is committed to creating an inclusive workplace for employees where all individuals are treated with respect and dignity. We are an equal opportunity employer and make employment decisions based on merit, qualifications, and business needs. We do not discriminate on the basis of race, color, religion, sex, national origin, age, gender, disability, veteran status, sexual orientation, or any other protected status under applicable laws. We are dedicated to fostering a workplace that reflects a diversity of thought and experience as well as our values of being smart, open, driven, accountable, and curious.

Tatari is on a mission to revolutionize TV advertising. Founded in 2016 to help transform the antiquated world of TV advertising through the intelligent application of AI and machine learning, Tatari helps some of the world’s fastest growing brands including Chime, Calm, Tecovas, Manscaped, Saatva, and Liquid I.V., reach their customers using linear and streaming TV ads. Our platform combines sophisticated media buying with proprietary analytics to turn TV advertising into an automated, digital-like experience, enabling businesses of any size to advertise on TV.

That approach has earned Tatari broad industry recognition, including being named Best CTV AdTech Platform in the 8th annual MarTech Breakthrough Awards, as well as honors from Digiday (Best Connected TV Platform), AdExchanger (Most Innovative TV Advertising Technology), and Business Insider (Hottest AdTech Companies). Tatari has also been recognized as the Best Place to Work by Inc. Magazine. Backed by an executive team of former founders and senior leaders from companies including Shazam, TrueCar, AdapTV, LiveRail, Amazon, Google, Meta, Microsoft, and Yahoo, Tatari continues to scale rapidly as TV advertising enters its next major era.

Tatari is looking for a detail-oriented Manual QA Engineer with strong AdTech experience to help ensure high-quality releases across complex advertising workflows. You will work closely with Engineering to validate end-to-end ad delivery, investigate production issues, and uphold quality standards in a fast-paced, international environment. This role is ideal for a QA professional with deep experience in DSP and/or SSP platforms who is passionate about accurate targeting, reliable analytics, and seamless campaign execution.

Key Responsibilities

• Perform manual testing of web-based advertising platforms
• Validate full ad delivery lifecycle: campaign setup, targeting, serving, pacing, attribution, and reporting
• Test targeting logic, analytics accuracy, optimization workflows, and RTB flows
• Conduct UI and API testing (REST & GraphQL)
• Use SQL for data validation, reconciliation, and consistency checks
• Investigate, reproduce, and document complex production issues; perform root cause analysis
• Validate integrations with third-party partners, tracking systems, and data providers
• Support regression, smoke, exploratory, and non-functional testing
• Collaborate on frontend test automation initiatives

Required Qualifications

• 6+ years of QA experience in web applications
• 3+ years of hands-on AdTech experience, specifically with DSP and/or SSP platforms (required)
• Strong understanding of digital advertising workflows, targeting logic, RTB, tracking, and reporting
• 2+ years of API testing experience (REST, GraphQL; Postman or similar tools)
• Experience writing SQL queries for data validation
• Strong analytical and problem-solving skills
• Experience working in Agile environments
• Excellent attention to detail and structured documentation skills
• Intermediate English proficiency (written and spoken)

Benefits

• Competitive salary, including equity package and quarterly tax assistance (only for Ukraine tax residents)
• Competitive time off plus company wellness days throughout the year
• Team building events 
• Annual continued education benefit
• Newbie Productivity Perk
• Monthly stipend
• Annual mental health awareness app reimbursement
• Currently remote but may be hybrid when there is a physical office

At Tatari, we believe in the importance of cultivating teams with diverse backgrounds and offering equal opportunities to all. We strive to create a welcoming, inclusive environment where every team member feels valued and diversity is celebrated.

#LI-REMOTE

✅ Main requirements:

✔️3–5+ years of experience in test automation within product or platform teams;

✔️Strong hands-on experience with TypeScript / JavaScript;

✔️Experience writing end-to-end tests alongside application code (near-code / monorepo approach);

✔️Proven experience working in cross-functional teams with close collaboration with Backend, Frontend, and DevOps engineers;

✔️Practical experience with modern E2E testing frameworks (Playwright or equivalent)

✔️Strong understanding of testing principles and strategies, including the test pyramid, shift-left approach, and contract testing;

✔️Experience with REST API testing, data validation, and system-level testing;

✔️Ability to design and implement mocks, stubs, and other test doubles to ensure stable and isolated tests;

✔️Solid understanding of object-oriented and/or functional programming concepts as applied to test code and frameworks;

✔️Experience working with CI/CD pipelines (GitLab CI, Jenkins, GitHub Actions, or similar);

✔️Familiarity with test observability and reporting tools (e.g., Allure, TestOps, CI-based reporting);

✔️Strong communication skills with the ability to actively participate in technical discussions and challenge requirements constructively;

✔️English proficiency at an Intermediate level or higher, both written and spoken.

✅ Nice to have:

✔️Experience writing and maintaining integration tests (service-to-service, contract-based testing);

✔️Experience contributing to the design and evolution of test automation frameworks;

✔️Practical knowledge of Docker and test environment configuration;

✔️Experience testing GraphQL APIs;

✔️Experience with distributed systems or high-load platforms;

✔️Experience in non-functional testing, including performance, reliability, and resilience testing.

✅ Responsibilities:

✔️ Design, implement, and maintain end-to-end automated tests in TypeScript, developed and maintained alongside the application code;

✔️Collaborate closely with developers throughout the feature lifecycle, including design, implementation, and defect resolution;

✔️Participate in defining test strategies at both feature and system levels;

✔️Contribute to the development and continuous improvement of the automation testing framework;

✔️Make informed decisions on the appropriate use of mocks, stubs, or real integrations depending on testing goals;

✔️Ensure automated tests are reliable, maintainable, and suitable for execution in CI/CD pipelines;

✔️Participate in code reviews for test code and, when appropriate, application code;

✔️Provide fast, clear, and actionable feedback on quality and defects to the development team;

✔️Promote a built-in quality mindset and continuous improvement of testing practices across the team.

✅ We offer excellent benefits, including but not limited to:

🧑🏻 💻 Learning and development opportunities and interesting challenging tasks;

📝 Official employment following the laws of Poland/EU, registration of family members;

✈️ Relocation package (tickets, staying in a hotel for 2 weeks);

📚 Opportunity to develop language skills and partial compensation for the cost of language classes;

🎁 Birthday celebration present;

🏝 Time for proper rest and 24 working days of Annual Vacation.

❗️Please note that this role is office-based for Poland, Warsaw.

❗️If you need to be relocated, we take care of the process.

We are looking for a skilled Senior Node.js Developer to join our team in our Warsaw office.

✅ We offer excellent benefits, including but not limited to:

🚀 Career growth opportunities in an international and dynamic environment;
📚 Opportunity to develop language skills with partial compensation for language courses;
🎁 Special gifts for birthdays, weddings, and newborns;
🏝️ 20 working days of paid annual vacation, plus paid sick leave;
🍲 Office snacks and refreshments;
🏋️‍♂️ Sports package to support a healthy lifestyle;
🩺 Comprehensive medical insurance for you and your partner;
📍 Comfortable office with great facilities in a prime location;
 🎉 Exciting corporate events, team-building activities, and international company parties.