About Us:

At Sauce Labs, we empower the world's top enterprises - like Walmart, Bank of America, and Indeed - to deliver quality web and mobile applications at speed. Our industry-leading platform ensures continuous quality across the SDLC, using AI-powered analytics to identify key quality signals from development through production. With our unified solution, teams can release and innovate with confidence, knowing their apps will always look, function, and perform exactly as they should. Backed by TPG and Riverwood Capital, we are shaping the future of digital confidence - join us!

The Role:

Sauce Labs is looking for a passionate Senior Backend Engineer to join the Sauce Connect team. This agile development team plays a critical role in enabling enterprise customers to maximize their use of Sauce Labs by providing a fast, secure connection between their internal development networks and our cloud-based virtual testing environments. You will work closely with the Product Owner, Engineering Manager, and other talented Sauce Connect engineers to achieve excellent results and shape the future of Sauce Connect

Responsibilities:

• Lead the technical direction and architectural design of Sauce Connect, collaborating with a cross-functional team to deliver a fast, secure, and scalable tunneling solution.
• Design, develop, and own projects across the full stack, from the backend server infrastructure to the client-side application on Linux, Windows, and macOS.
• Act as a technical expert for complex, escalated customer issues, performing root cause analysis and implementing robust solutions to prevent future problems.
• Drive continuous improvements in the scale, performance, and quality of our Trusted Connection Technologies, mentoring other engineers on best practices and system health.
• Proactively identify and evaluate emerging technologies in the open-source community, presenting well-researched proposals for adoption to drive innovation and technical excellence.
• Make and defend architectural decisions based on your extensive experience, balancing trade-offs between technical debt, velocity, and long-term maintainability.

Required Skills:

• 5+ years of professional software development experience in Python or Golang, with a proven track record of designing, building, and operating complex distributed systems and high-availability online services at scale.
• Experience in working with CI/CD tools (designing and implementing robust, automated pipelines using tools like GitHub Actions, GitLab CI, or Jenkins)
• Advanced experience with tunneling, proxy, or VPN-related solutions, with a understanding of their security implications and performance characteristics.
• Deep knowledge of TCP/IP networking, HTTP2, SSL/TLS, and WebSockets. You should be able to debug network issues at the packet level.
• Hands-on experience deploying and managing containerized applications at scale using Kubernetes.
• Demonstrable product development experience, including the ability to influence product strategy and make technical trade-offs to deliver customer-facing value.
• Exceptional ownership mentality and a passion for crafting elegant, well-architected products that deliver stellar user experiences.

Nice to Haves:

• Experience with asynchronous programming
• Experience building and consuming microservices
• Knowledge and understanding of data structures, algorithms, distributed systems, and design patterns.
• Familiarity with modern monitoring systems (e.g., Prometheus or OpenTelemetry)
• Understanding of common security practices involved in protecting customer data

We are a hybrid workplace that recognizes the importance of flexibility while valuing in-person collaboration and relationship building. As a result, Saucers located near an office location must be able and willing to come into the office. Those hired remotely must be able and willing to travel to an office as required by the specific role.

Please note our privacy terms when applying for a job at Sauce Labs.

Sauce Labs is proud to be an Equal Opportunity employer and values diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender identity/expression/status, sexual orientation, age, marital status, veteran status or disability status.

Security responsibilities at Sauce

At Sauce, we will commit to supporting the health and safety of employees and properties, partnering with internal stakeholders to learn and act on ever-evolving security protocols and procedures. You’ll be expected to fully comply with all policies and procedures related to security at the department and org wide level and exercise a ‘security first’ approach to how we design, build & run our products and services.

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 collaborate with the Food Systems Alliance at a pivotal moment as the organization transitions from bespoke operational tooling toward scalable software products that support the global supply chain. In this role, you’ll help translate complex business processes — such as route planning, procurement, and menu planning — into robust and reliable technical solutions.

Your initial focus will be enhancing and optimizing Python-based tools that support day-to-day production operations, while contributing longer term to the development of modular, globally scalable systems that support HelloFresh’s food supply chain across multiple regions.

What you’ll do: The Recipe

• Design and develop software products and workflow tooling supporting global supply chain operations, from ingredient planning to logistics.
• Contribute to the evolution of existing tooling and data processes into modular, scalable backend solutions aligned with HelloFresh’s growth.
• Work closely with stakeholders across Procurement, Production, and Data Engineering to help translate operational requirements into technical solutions.
• Contribute to engineering best practices around code quality, reliability, maintainability, and system design within the broader engineering setup.
• Improve and optimize complex data workflows and production logic to support evolving operational needs.
• Support knowledge sharing and collaboration across engineers through activities such as code reviews, technical discussions, and documentation.

What you’ll bring: The Ingredients 

• Extensive backend engineering experience, with a deep mastery of Python and a strong interest (or experience) in exploring the JVM ecosystem (Kotlin) or Golang as our systems evolve.
• A proven track record in Data Engineering or building data-heavy products, including solid experience with SQL and data modeling (familiarity with Airflow or Pandas is a plus).
• Expertise in designing modular systems that utilize both synchronous and asynchronous communication to handle global scale.
• An agile mindset and the ability to thrive in a high-pace environment where you can translate vague business questions into concrete technical roadmaps.
• Familiarity with modern infrastructure and cloud technologies, specifically AWS and Kubernetes, to ensure your solutions are production-ready.
• Strong communication skills and the ability to navigate both deep-tech discussions and stakeholder management.

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 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

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

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.

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 Payments Offering team is the critical pillar of our payment infrastructure at HelloFresh. We are responsible for designing, building, and maintaining the core payment systems that power every transaction across the organization. We own several critical backend services for the Payments Tribe within the Growth Alliance, and our team plays a crucial role in ensuring the scalability, reliability, and security of our end-to-end payment ecosystem.

The primary responsibility of a Mid-Level Backend Engineer in the Payments Offering squad is to develop and maintain core backend services responsible for integrating various Payment methods which provide convenience for customers to pay using desired payment methods and successfully able to process their payment. This role also involves close collaboration with engineers from many other teams across the organization to provide seamless, secure payment processing for both existing and new customers across all HelloFresh markets globally.

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

• Contribute to the design, development, deployment, and operations of payment systems and integrations, applying DevOps practices, pair programming, and modern engineering methodologies
• Actively participate as a collaborative member within autonomous, cross-functional agile teams, working closely with product owners, frontend engineers, and mobile developers to deliver reliable payment solutions.
• Develop a solid understanding of HelloFresh's payment infrastructure and architecture, supporting teammates through code reviews, knowledge sharing, and contributing to technical documentation.
• Work with modern technologies such as AWS Cloud, Go/Kotlin, Kafka, Kubernetes, PostgreSQL, and observability tools to build scalable and secure payment systems that serve millions of customers globally.

What you’ll bring: The Ingredients

• Solid backend development skills in a microservices architecture, with proficiency in one of the following languages: Golang, Java, or Kotlin.
• Working knowledge of containerization and orchestration tools, particularly Docker and Kubernetes, and an understanding of CI/CD principles, with exposure to modern deployment pipelines.
• Familiarity with software design and testing methodologies such as TDD, BDD, and distributed system patterns, with eagerness to deepen your expertise.
• Experience across the development lifecycle—from writing unit and integration tests to deploying and monitoring distributed applications in production environments.
• Proficiency in working with relational databases and experience with event-driven systems such as Kafka or RabbitMQ.
• Prior experience in the Payments domain and working with PSPs & Payment methods would be 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

About the Role

Veeam Data Cloud is rapidly scaling, and we’re committed to unifying our security approach across all teams to ensure consistent product protection.

We’re seeking a Security Tech Lead to drive the design and rollout of standardized security solutions and help establish a dedicated Software Security Engineering platform team. In this role, you’ll work closely with the Director of Security Engineering to turn our unified strategy into an actionable engineering roadmap, shaping a strong and cohesive security framework.

What You’ll Do

• Lead the architecture and implementation of shared security primitives across Veeam Data Cloud
• Translate high-level security strategy into a concrete, prioritized engineering roadmap for cloud services and platform capabilities
• Act as a hands-on technical leader – write and review production code, drive design and code reviews, mentorship
• Establish and promote secure-by-default patterns and shared libraries to streamline security across teams 
• Build the foundation for a Software Security Engineering platform to manage shared security services and tools 
• Collaborate with product, platform, SRE, and compliance teams to ensure security solutions are robust and easy to adopt 
• Enhance security posture through automation, guardrails, and policy-as-code 

Technologies You’ll Work With

• Languages & Frameworks: Go, Python, and TypeScript (and related service/API frameworks)
• Cloud & Platform: Modern cloud-native architectures (microservices, event-driven systems, multi-tenant SaaS) using AWS, Azure, and GCP
• Security & Identity: Authentication and authorization services, identity providers, security control planes, guardrails, secure logging
• Tooling & Practices: Code and design review, CI/CD, observability and logging stacks, policy-as-code and security automation

What You’ll Bring

• Strond coding skills (Golang, Python, or TypeScript)
• Extensive experience building distributed, cloud-native systems
• Practical expertise in authentication/authorization, security guardrails, and secure observability for production systems
• Proven technical leadership: architecture, roadmap influence, and mentoring engineers
• Strong product mindset, focusing on platform security that empowers other teams
• Skilled at cross-team collaboration and clear communication of complex topics
• Preference for automation, reusable platforms, and secure-by-default approaches over one-off solutions

Bonus Skills

• Experience building or leading platform and product security teams providing shared services to multiple product teams
• Background in multi-tenant SaaS and large-scale control/data planes
• Familiarity with modern security practices (e.g., zero trust, least privilege, policy-as-code, security service meshes)
• Experience working with regulatory or enterprise security requirements

What You’ll Get 

• 26 paid days off annually, plus 4 extra global VeeaMe Days for self-care and 24 paid volunteer hours annually through Veeam Cares
• Paid parental, maternity, and paternity leave
• Fully covered family medical plan, dental, rehab, and vaccinations
• Life, critical illness, and disability insurance
• Employer pension contribution via PPK
• Monthly Edenred allowance of 450 PLN for meals
• MultiSport card fully covered by Veeam, giving access to sports facilities nationwide
• Up to 12 free therapy sessions annually, plus legal and financial advice
• Opportunities to learn and grow through on-demand libraries (LinkedIn Learning, O’Reilly), mentoring, workshops and learning events like our annual Global Day of Learning

#LI-TK1

Role Description

As a Staff Full Stack Software Engineer on the Churn and International Growth team, you will work across large scale projects with a focus on reliability, performance, and 0 -> 1 execution in new international markets. You will support our push toward AI enabled products by contributing to a modern stack for rapid prototyping and dependable deployment. You will set the technical vision, lead full stack development, and help define a unified architecture for cancellation and internationalization flows.

You will partner closely with product, data science, design, and engineering leaders across the business to deliver software that drives customer and business value. This role will oversee a high impact portfolio focused on reducing churn and accelerating global growth, including our Churn Prevention Engine and a range of early churn, down sell, and cancellation optimizations.

Our Engineering Career Framework is viewable by anyone outside the company and describes what’s expected for our engineers at each of our career levels. Check out our blog post on this topic and more here.

Responsibilities

• Translate business requirements into clear, scalable technical solutions.
• Strengthen team collaboration through code reviews, knowledge sharing, and mentoring.
• Define and execute a multi year, multi team technical strategy with measurable impact.
• Align technical solutions with business goals in partnership with cross functional teams.
• Lead by example through high quality code, thoughtful reviews, and hands on mentorship.
• Drive product innovation by balancing user needs, technical rigor, and business outcomes.

On-call work may be necessary occasionally to help address bugs, outages, or other operational issues, with the goal of maintaining a stable and high-quality experience for our customers.

Requirements

• 12+ years of experience as a backend or full stack engineer with a track record of delivering scalable, reliable systems.
• BS in Computer Science or a related field, or equivalent experience.
• Strong expertise in backend technologies such as Golang and Python.
• Strong expertise in frontend frameworks such as React.
• Exceptional problem solving skills and the ability to turn user needs into effective technical solutions.
• Solid understanding of best practices for building high performance, reliable, scalable services.
• Excellent communication skills with the ability to collaborate across functions and present concepts clearly to both technical and non-technical stakeholders.

What You'll Do:

As part of the Network Services / DPU team, you will own the test and automation strategy for our OVS-based datapath and related control-plane components. You will partner closely with DPU, networking, and platform engineering teams to define requirements, build automation, and turn dataplane validation into a reliable, repeatable service that protects our customers and our cloud.

About the role: 

You will lead a local team driving the DPU test strategy and execution, owning validation for regression, functionality, and scalability of NVIDIA software releases. Your day-to-day involves designing automation to orchestrate DPU/host configurations and OVS pipelines, while integrating these tests into CI/CD to gate production releases. You will collaborate with operations on incident patterns, participate in on-call rotations, and work directly with vendors like NVIDIA on escalations and feature validation. Additionally, you will influence the long-term architecture of DPU dataplane and control-plane designs from a testability perspective.

Who You Are:

• 7+ years of experience in networking, systems, or cloud infrastructure engineering, focusing on dataplane technologies and production operations.
• Hands-on experience with NVIDIA DPUs (e.g., BlueField) in large-scale deployments, including firmware/software lifecycle and offload pipelines.
• Strong knowledge of OVS configuration and pipelines, including bridges, flows, and hardware offloads.
• Solid background in cloud networking infrastructure, including VPCs, routing, security policies, and overlay/underlay networking.
• Proven ability to build test and automation frameworks using Python, Golang, or similar languages.
• Proficiency in network observability and troubleshooting using tools like tcpdump, iproute2, and perf.
• Excellent communication skills with the ability to lead technical direction and mentor junior engineers.

Preferred:

• Experience validating NVIDIA DPU / DOCA / HBN stacks in a cloud provider environment.
• Prior work on system tests for network switches, smartNICs, or DPUs.
• Experience with Kubernetes-based environments and DPU integration into node lifecycles.
• Contributions to open-source projects such as P4, OVS, DPDK, or DOCA libraries.

Wondering if you're a good fit? 

We believe in investing in our people, and value candidates who can bring their own diversified experiences to our teams even if you aren't a 100% skill or experience match. Here are a few qualities we've found compatible with our team. If some of this describes you, we'd love to talk.

• You love to build long-term, strategic relationships and find creative ways to unlock mutual value.
• You're curious about the rapidly evolving AI and cloud ecosystem and staying current on new technologies.
• You're an expert in connecting dots across teams and organizations to design scalable plays that drive measurable impact.

Why CoreWeave?

At CoreWeave, we work hard, have fun, and move fast! We're in an exciting stage of hyper-growth that you will not want to miss out on. We're not afraid of a little chaos, and we're constantly learning. Our team cares deeply about how we build our product and how we work together, which is represented through our core values:

• Be Curious at Your Core
• Act Like an Owner
• Empower Employees
• Deliver Best-in-Class Client Experiences
• Achieve More Together

We support and encourage an entrepreneurial outlook and independent thinking. We foster an environment that encourages collaboration and enables the development of innovative solutions to complex problems. As we get set for takeoff, the organization's growth opportunities are constantly expanding. You will be surrounded by some of the best talent in the industry, who will want to learn from you, too. Come join us!

The base salary range for this role is PLN 250,000 to PLN 428,000. The starting salary will be determined by job-related knowledge, skills, experience, and the market location. We strive for both market alignment and internal equity when determining compensation. In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility).

What You’ll Do:

The GPU Performance Team is responsible for the automated testing and verification of CoreWeave’s ever-expanding fleet of nodes and infrastructure.   The team plays a critical role in ensuring that the hardware we deliver to customers is stable and performant throughout its lifecycle.  

About the role:

We are seeking a Senior Software Engineer to join the GPU Performance team to help us build and refine our automation platforms and workflows for reliability, efficiency, scalability and observability. This individual will join a team of Golang and Python developers innovating kubernetes-based solutions to hardware performance testing. As a member of the GPU Performance  team, you would have the opportunity to:

• Design and Implement solutions for testing infrastructure at scale through automation.
• Develop platforms, workflows, data structures, API endpoints, and other testing management tools and capabilities.
• Create test plans, deployment automation, dashboards, alerts, and insights into our performance testing platform.
• Grow, change, invest in your teammates, be invested-in, share your ideas, listen to others, be curious, have fun, and, above all, be yourself.

Who You Are: 

You are a software engineer with a strong bias toward reliability, automation, and scale. You’re comfortable owning services end‑to‑end and working close to hardware, but your primary tools are Go or Python, Kubernetes, and well‑designed APIs.

• Have experience building and maintaining backend services and APIs (REST/gRPC) and are comfortable integrating with infrastructure systems (Kubernetes, CI/CD, telemetry, metrics backends).
• Are motivated by automation at scale: you’d rather design a controller, workflow, or platform than run one‑off tests by hand.
• Are familiar with system metrics, performance, and health (e.g., GPU/CPU, network, storage, or similar infra) and know how to turn raw metrics into dashboards, alerts, and actionable insights.
• Are comfortable designing and implementing performance tests and validation workflows that run across many nodes and clusters.
• Care about code quality, observability, and operational readiness: logs, metrics, tracing, alerting, and on‑call are part of how you think about building systems.
• Are willing to participate in an on‑call rotation and help own the stability of the platforms you build.
• Work well in a collaborative, curious, and feedback‑driven team: you invest in your teammates, share ideas openly, and are excited to help shape how CoreWeave validates hardware performance at fleet scale.

Preferred:

• Write and maintain Kubernetes custom controllers and operators to automate infrastructure testing.
• Contributions to OSS projects such as  llm-d, vLLM, or PyTorch
• Exposure to benchmarking large GPU fleets or multi-region clusters.
• Experience with CUDA kernels, NCCL/SHARP, RDMA/NUMA, or GPU interconnect topologies.

Wondering if you’re a good fit? We believe in investing in our people, and value candidates who can bring their own diversified experiences to our teams – even if you aren't a 100% skill or experience match. Here are a few qualities we’ve found compatible with our team.

Why CoreWeave?

At CoreWeave, we work hard, have fun, and move fast!  We’re in an exciting stage of hyper-growth that you will not want to miss out on. We’re not afraid of a little chaos, and we’re constantly learning. Our team cares deeply about how we build our product and how we work together, which is represented through our core values: 

• Be Curious at Your Core
• Act Like an Owner
• Empower Employees
• Deliver Best-in-Class Client Experiences
• Achieve More Together

We support and encourage an entrepreneurial outlook and independent thinking. We foster an environment that encourages collaboration and enables the development of innovative solutions to complex problems. As we get set for takeoff, the organization's growth opportunities are constantly expanding. You will be surrounded by some of the best talent in the industry, who will want to learn from you, too. Come join us! 

The base salary range for this role is zł321,000 to zł535,000. The starting salary will be determined by job-related knowledge, skills, experience, and the market location. We strive for both market alignment and internal equity when determining compensation. In addition to base salary, our total rewards package includes a discretionary bonus, equity awards, and a comprehensive benefits program (all based on eligibility).

Join Exadel as a Senior Software Engineer and bring bold ideas to life on a long-term global project. You’ll write clean code, drive impact, and have a real voice at the table.

Why Join Exadel

We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.

What powers it all? Our people are ambitious, collaborative, and constantly evolving.

About the Client  

A leading European home and living e-commerce company, redefining how product and supplier data is managed across the industry, working together with partner companies in a strategic purchasing group to build a new Product Data Onboarding Platform from the ground up.

What You’ll Do

• Manage the development of robust, Tier-1 backend services using Go to power our brand-new Master Data Platform
• Take end-to-end responsibility for your work, from building the initial concept and RFC to implementation, testing, and monitoring
• Collaborate with Frontend teams to build high-efficiency APIs that ensure smooth integration across our entire ecosystem
• Utilize next-gen development practices; as a proficient AI user, you'll leverage tools like ClaudeCode/Codex to bypass the mundane and focus on complex architectural problems
• Write clean, testable code and foster a culture of excellence through technical discussions, code reviews, and knowledge-sharing sessions

What You Bring

• 4+ years of professional experience in Go (Golang)
• 8+ years in general web development
• Proven track record of building and maintaining scalable services and APIs for complex web applications
• You are comfortable with cloud-based infrastructure (ideally Azure) and IaaC
• A collaborative team player who thrives in cross-functional environments and actively contributes to shared goals

Nice to Have

• Experience in leading and supporting teams is considered a strong advantage in driving collaborative delivery and shared success

English level 

Intermediate+

Legal & Hiring Information 

• Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more
• Reasonable accommodations are available to enable individuals with disabilities to perform essential functions
• Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs

Your Benefits at Exadel  

Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details.

• International projects
• In-office, hybrid, or remote flexibility
• Medical healthcare
• Recognition program
• Ongoing learning & reimbursement 
• Well-being program
• Team events & local benefits 
• Sports compensation 
• Referral bonuses 
• Top-tier equipment provision

Exadel Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.

Join Exadel as a Senior Software Engineer and bring bold ideas to life on a long-term global project. You’ll write clean code, drive impact, and have a real voice at the table.

Why Join Exadel

We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.

What powers it all? Our people are ambitious, collaborative, and constantly evolving.

About the Client  

A leading European home and living e-commerce company, redefining how product and supplier data is managed across the industry, working together with partner companies in a strategic purchasing group to build a new Product Data Onboarding Platform from the ground up.

What You’ll Do

• Manage the development of robust, Tier-1 backend services using Go to power our brand-new Master Data Platform
• Take end-to-end responsibility for your work, from building the initial concept and RFC to implementation, testing, and monitoring
• Collaborate with Frontend teams to build high-efficiency APIs that ensure smooth integration across our entire ecosystem
• Utilize next-gen development practices; as a proficient AI user, you'll leverage tools like ClaudeCode/Codex to bypass the mundane and focus on complex architectural problems
• Write clean, testable code and foster a culture of excellence through technical discussions, code reviews, and knowledge-sharing sessions

What You Bring

• 4+ years of professional experience in Go (Golang)
• 8+ years in general web development
• Proven track record of building and maintaining scalable services and APIs for complex web applications
• You are comfortable with cloud-based infrastructure (ideally Azure) and IaaC
• A collaborative team player who thrives in cross-functional environments and actively contributes to shared goals

Nice to Have

• Experience in leading and supporting teams is considered a strong advantage in driving collaborative delivery and shared success

English level 

Intermediate+

Legal & Hiring Information 

• Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more
• Reasonable accommodations are available to enable individuals with disabilities to perform essential functions
• Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs

Your Benefits at Exadel  

Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details.

• International projects
• In-office, hybrid, or remote flexibility
• Medical healthcare
• Recognition program
• Ongoing learning & reimbursement 
• Well-being program
• Team events & local benefits 
• Sports compensation 
• Referral bonuses 
• Top-tier equipment provision

Exadel Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.

Join Exadel as a Senior Software Engineer and bring bold ideas to life on a long-term global project. You’ll write clean code, drive impact, and have a real voice at the table.

Why Join Exadel

We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.

What powers it all? Our people are ambitious, collaborative, and constantly evolving.

About the Client  

A leading European home and living e-commerce company, redefining how product and supplier data is managed across the industry, working together with partner companies in a strategic purchasing group to build a new Product Data Onboarding Platform from the ground up.

What You’ll Do

• Manage the development of robust, Tier-1 backend services using Go to power our brand-new Master Data Platform
• Take end-to-end responsibility for your work, from building the initial concept and RFC to implementation, testing, and monitoring
• Collaborate with Frontend teams to build high-efficiency APIs that ensure smooth integration across our entire ecosystem
• Utilize next-gen development practices; as a proficient AI user, you'll leverage tools like ClaudeCode/Codex to bypass the mundane and focus on complex architectural problems
• Write clean, testable code and foster a culture of excellence through technical discussions, code reviews, and knowledge-sharing sessions

What You Bring

• 4+ years of professional experience in Go (Golang)
• 8+ years in general web development
• Proven track record of building and maintaining scalable services and APIs for complex web applications
• You are comfortable with cloud-based infrastructure (ideally Azure) and IaaC
• A collaborative team player who thrives in cross-functional environments and actively contributes to shared goals

Nice to Have

• Experience in leading and supporting teams is considered a strong advantage in driving collaborative delivery and shared success

English level 

Intermediate+

Legal & Hiring Information 

• Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more
• Reasonable accommodations are available to enable individuals with disabilities to perform essential functions
• Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs

Your Benefits at Exadel  

Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details.

• International projects
• In-office, hybrid, or remote flexibility
• Medical healthcare
• Recognition program
• Ongoing learning & reimbursement 
• Well-being program
• Team events & local benefits 
• Sports compensation 
• Referral bonuses 
• Top-tier equipment provision

Exadel Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.

Join Exadel as a Senior Software Engineer and bring bold ideas to life on a long-term global project. You’ll write clean code, drive impact, and have a real voice at the table.

Why Join Exadel

We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next.

What powers it all? Our people are ambitious, collaborative, and constantly evolving.

About the Client  

A leading European home and living e-commerce company, redefining how product and supplier data is managed across the industry, working together with partner companies in a strategic purchasing group to build a new Product Data Onboarding Platform from the ground up.

What You’ll Do

• Manage the development of robust, Tier-1 backend services using Go to power our brand-new Master Data Platform
• Take end-to-end responsibility for your work, from building the initial concept and RFC to implementation, testing, and monitoring
• Collaborate with Frontend teams to build high-efficiency APIs that ensure smooth integration across our entire ecosystem
• Utilize next-gen development practices; as a proficient AI user, you'll leverage tools like ClaudeCode/Codex to bypass the mundane and focus on complex architectural problems
• Write clean, testable code and foster a culture of excellence through technical discussions, code reviews, and knowledge-sharing sessions

What You Bring

• 4+ years of professional experience in Go (Golang)
• 8+ years in general web development
• Proven track record of building and maintaining scalable services and APIs for complex web applications
• You are comfortable with cloud-based infrastructure (ideally Azure) and IaaC
• A collaborative team player who thrives in cross-functional environments and actively contributes to shared goals

Nice to Have

• Experience in leading and supporting teams is considered a strong advantage in driving collaborative delivery and shared success

English level 

Intermediate+

Legal & Hiring Information 

• Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more
• Reasonable accommodations are available to enable individuals with disabilities to perform essential functions
• Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs

Your Benefits at Exadel  

Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details.

• International projects
• In-office, hybrid, or remote flexibility
• Medical healthcare
• Recognition program
• Ongoing learning & reimbursement 
• Well-being program
• Team events & local benefits 
• Sports compensation 
• Referral bonuses 
• Top-tier equipment provision

Exadel Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.

About the Role

We are the leader in Kubernetes Backup and Disaster Recovery. Veeam Kasten, our data management platform purpose-built for Kubernetes, provides enterprise operations teams with an easy-to-use, scalable, and secure system for backup and restore, disaster recovery, and application mobility with unparalleled operational simplicity. We are constantly optimizing and extending the functionality of our Kubernetes offerings to meet the needs of our customers. We are now further integrating our tools with SaaS services and building up support for virtual machines hosted in Kubernetes. 

We are looking for a Senior Software Developer to contribute to our Veeam Kasten data management platform, ensuring top-tier security and excellence. 

What You’ll Do

• Owning (designing, developing in Go, and testing) significant features in the Veeam Kasten product related to backup and recovery of Kubernetes applications, databases, and storage systems
• Integrating Veeam Kasten with other Veeam products and expanding it’s capabilities
• Collaborating with distributed teams across different time zones and regions
• Working with and contributing to the cloud-native open-source community
• Participating in technical design discussions, reviewing code, and providing feedback to other engineers

Technologies we work with

Kubernetes, Helm, Docker, Golang, Bash, Git, OpenShift, Rancher, Google GKE, AWS EKS, Azure AKS, VMware TKG(s), etc. Our team is passionate about code quality, extensibility, coding standards, testing, and automation. 

What You’ll Bring

• 5+ years of experience developing enterprise solutions in a high-level programming language such as C++, Java, or C#, and a willingness to code in Go
• Experience with distributed systems concepts and client-server architectures
• Expertise in developing, testing, and debugging production-quality, scalable, multi-threaded, and concurrent systems
• Strong knowledge of computer science fundamentals (data structures, algorithms, and concurrency)
• Strong sense of ownership, delivering work end-to-end, aligning with stakeholders, maintaining high level of quality and following up with the delivered solutions in production
• A university degree in a technical field or equivalent industry experience

Bonus Skills

• Experience developing in Go
• Experience developing for and on containers, container scheduler, and orchestration platforms
• Experience developing complex systems with AI coding agent tools at scale
• Active contribution to OSS projects in the Kubernetes/Cloud-Native ecosystem
• Participation in CNCF Technical Advisory Groups (TAGs) or Kubernetes Special Interest Groups (SIGs)

What You'll Get

• 26 paid days off annually, plus 4 extra global VeeaMe Days for self-care and 24 paid volunteer hours annually through Veeam Cares
• Paid parental, maternity, and paternity leave
• Fully covered family medical plan, dental, rehab, and vaccinations
• Life, critical illness, and disability insurance
• Employer pension contribution via PPK
• Monthly Edenred allowance of 450 PLN for meals
• MultiSport card fully covered by Veeam, giving access to sports facilities nationwide
• Up to 12 free therapy sessions annually, plus legal and financial advice
• Opportunities to learn and grow through on-demand libraries (LinkedIn Learning, O’Reilly), mentoring, workshops and learning events like our annual Global Day of Learning

#LI-TK1

Why this role matters:

We are looking for a Software Engineer to join our hybrid Java/Go development team. You will take a pivotal role in the development of a Go microservice that is critical to our Fraud Prevention Platform - responsible for handling and delivering fraud alerts to our customers in real time. This is a high-impact role at the heart of our fraud detection capabilities, where your work will directly protect Vonage customers at scale. 

We are a team that embraces the future: we have a strong and growing adoption of AI across our engineering workflows, and we actively leverage AI agents in our day-to-day work - from accelerating development cycles to enhancing fraud detection intelligence. If you are excited about working in an environment where AI is not a buzzword but a real part of how we build and operate, you will feel right at home.

Your key responsibilities:

• Play a pivotal role in developing Go microservices for our fraud alert delivery pipeline.
• Build high-throughput, low-latency applications to meet fraud detection use cases.
• Create scalable microservice that will help support our impressive growth
• Write efficient and scalable code in well-tested systems
• Collaborate with cross-functional teams to ensure seamless integration and functionality.
• Propose scalable, maintainable and cost-effective solutions
• Estimate the effort required to develop and implement new features
• Develop and execute effective testing strategies to ensure software quality and reliability
• Embed AI assisted engineering into daily practice to accelerate delivery and enhance outcomes
• Proactively adopt emerging AI capabilities to improve workflows and shares best practices with the team
  

What you'll bring

Required:

• Excellent software engineering skills in Go for backend services
• A strong focus on testing, with a customer-first mindset
• Experience with high throughput event-driven architectures, web services, and caching
• Willingness to learn and adapt to new technologies and programming languages
• AWS (RDS, EKS, S3, IAM, SQS, Lambda)
• Kafka, MySQL/PostgreSQL

Experience we consider a plus:

• Java
• Monitoring and observability experience
• Redis
• Practical experience in deploying code in a modern programming environment using tools such as Docker and Kubernetes

How you’ll benefit:

• Medical Insurance
• Glasses Reimbursement
• Life Insurance  - Allianz Family
• Kafeteria - My Benefit
• Ericsson Care Line
• Discretionary Time Off (DTO)
• Volunteer Time (VTO)
• Additional benefits and perks will be shared and discussed with you by the recruiter during the interview process

#LI-YB1

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:

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 Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

Interview Process

We believe transparency is important at Sezzle. Regularly providing feedback while setting expectations is part of our culture starting with the interview process. Advancement through each step is not guaranteed.

• Application submitted (you are here)
• Wonderlic test (30-40 min)
• Coding assessment (~1.5 hours)
• Interview with recruiters (30 min)
• Interview with engineers (1 hour)
• Interview with engineering leadership (30-45 min)
• Offer!

About the Role: 

We are seeking a talented and motivated Software Engineer II who is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement. As a Software Engineer II, you will be responsible for solving our most challenging problems along with a highly-motivated team. In this role, you will work closely with other engineers across multiple teams to provide high-quality, scalable, and innovative products. Your day-to-day responsibilities will include partnering with other engineers to design, develop, and deliver new features. As your skills grow so will the size and scope of the projects which you’ll be involved in. Sezzle has a strong culture for promotion with defined paths through Engineering that matches all levels. You’ll be working as part of a full-stack Engineering team which has varied disciplines.

Key Role Responsibilities: 

• Build and maintain new innovative product features focused on actively learning new areas of the product
• Collaborate with owners for different product features to gain insight and offer constructive suggestions for improvements
• Be an active participant in design/architecture discussions sharing your ideas while building the next generation of features for the Sezzle platform  
• Hands-on with our codebase and a contributor to code reviews
• Mentor other engineers who are starting along their career path
• Work with the team to continuously build and deploy scalable solutions
• Assist in planning, estimations, and completion for projects brought up by the team stakeholders

Minimum Requirements: 

• Experience solving technical problems as part of a team
• Bachelor's in computer science (required)
• Familiarity with modern Frontend Development, with React experience preferred
• Ability to solve problems with backend-focused languages like Go or similar compiled statically typed language
• Intermediate understanding of relational databases like MySQL

Preferred Knowledge and Skills:

• Knowledgeable in writing automated tests for applications (unit, integration, end-to-end)
• Familiar with the basic principles and design of RESTful APIs
• Basic knowledge of a Microservice Architecture
• Close familiarity with software engineering tools, software development methodology, and release processes

About You: 

• You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
• You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
• You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
• You earn trust - you listen attentively, speak candidly, and treat others respectfully.
• You have backbone; disagree, then commit - you can respectfully challenge decisions when you disagree, even when doing so is uncomfortable or exhausting. You have conviction and are tenacious. You do not compromise for the sake of social cohesion. Once a decision is determined, you commit wholly.
• You deliver results - you focus on the key inputs and deliver them with the right quality and in a timely fashion. Despite setbacks, you rise to the occasion and never settle.

Sezzle’s Technology Stack:

• Languages: Golang, Typescript, Python
• Frontend: Typescript - React and React Native
• Backend: Golang
• Database: MySQL, Postgres, Elasticsearch
• DevOps & Cloud: AWS, Kubernetes
• Version Control: Git
• CI/CD: Gitlab
• Testing: Developer-driven, focus on automated unit, integration, and end-to-end tests
• Sezzle is focused on using open source, and we build what we can before buying!

What Makes Working at Sezzle Awesome? 

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators; we are skilled musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers. We believe in surrounding ourselves with not only the best and the brightest individuals, but those that are unique and purpose-driven in all that they do. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-remote 

#Full-time

About Sezzle:

With a mission to financially empower the next generation, Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. We’re not just transforming payments; we’re redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales through increased conversions and higher order values. As we continue to shape the future of fintech and retail, we’re building an innovative, dynamic team passionate about creating more than just a transaction but a truly unique shopping journey. If you’re excited about pushing boundaries in tech and delivering a game-changing experience for consumers and merchants alike, come join us at Sezzle and help create the future of shopping!

About the Role: 

We are seeking a talented and motivated Senior Software Engineer who is best in class with a high IQ plus a high EQ. This role presents an exciting opportunity to thrive in a dynamic, fast-paced environment within a rapidly growing team, with abundant prospects for career advancement.

As a Senior Software Engineer with Sezzle, you will work with a highly-motivated team to tackle interesting and challenging problems across multiple areas of the organization. Your experience and guidance will help other members of the team level-up their own skills as well.

In this backend focused role, you will work closely with stakeholders from Product, Support and the business. You’ll also partner with other engineering teams to provide high-quality, scalable, and innovative solutions to internal and customer problems. Your day-to-day responsibilities will include designing, developing, and delivering new features, as well as unblocking and mentoring your teammates.

This role has both an internal and external focus, your contributions will make a meaningful difference in the day-to-day lives of your peers at Sezzle, enhancing their ability to support our business and customers, and you will have opportunities to take any feedback and iterate.

Interview Process

We believe transparency is important at Sezzle. Regularly providing feedback while setting expectations is part of our culture starting with the interview process. Advancement through each step is not guaranteed.

• Application submitted (you are here)
• Wonderlic test (30-40 min)
• Coding assessment (~1.5 hours)
• Interview with recruiters (30 min)
• Interview with engineers (1 hour)
• Interview with engineering leadership (30-45 min)
• Offer!

What you'll do: 

• Design software applications and features in Golang and React
• Help build out a distributed architecture, creating solutions that work within it, maintaining consistency while scaling highly
• Coordinate with internal company stakeholders to design market winning products
• Develop and collect metrics to drive continuous improvement of existing products
• Deliver high quality features which can be tested and adheres to reporting standards
• As needed, lead small development teams to bring a project to market
• Mentor other engineering teammates to help elevate their experience and knowledge

What We Look For: 

• At least 7 years of full-stack software engineering experience
• Experience bringing new ideas and building consensus on the path forward
• Experience with building and serving REST APIs using Go (preferably) and Java Python or a similar language.
• Experience working in a distributed, cloud-based architecture, with either design patterns like transactional outboxes, or queuing tools like RabbitMQ, SQS, Kafka
• BS in Computer Science or similar degree.

Preferred Knowledge and Skills:

• Experience with SQL based RDMS through an ORM tool
• Comfortable using observability platforms like Prometheus, or vendor solutions like NewRelic or Datadog to instrument your code for production monitoring and alerting.
• DevOps experience with CI/CD pipelines
• Familiarity with containerized micro-service architecture deployed with Kubernetes on AWS
• Demonstrated history of delivering commercial APIs and web applications
• A clear record of getting products to market and prioritizing solutions and improvements based on stakeholder/customer feedback.

About You: 

• You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed.
• You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things
• You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking.
• You earn trust - you listen attentively, speak candidly, and treat others respectfully.
• You have backbone; disagree, then commit - you can respectfully challenge decisions when you disagree, even when doing so is uncomfortable or exhausting. You have conviction and are tenacious. You do not compromise for the sake of social cohesion. Once a decision is determined, you commit wholly.
• You deliver results - you focus on the key inputs and deliver them with the right quality and in a timely fashion. Despite setbacks, you rise to the occasion and never settle.

Sezzle’s Technology Stack:

• Languages: Golang, Typescript, Python
• Frontend: Typescript - React and React Native
• Backend: Golang
• Database: MySQL, Postgres, Elasticsearch
• DevOps & Cloud: AWS, Kubernetes
• Version Control: Git
• CI/CD: Gitlab
• Testing: Developer-driven, focus on automated unit, integration, and end-to-end tests
• Sezzle is focused on using open source, and we build what we can before buying!

What Makes Working at Sezzle Awesome? 

At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators; we are skilled musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers. We believe in surrounding ourselves with not only the best and the brightest individuals, but those that are unique and purpose-driven in all that they do. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire. 

#Li-remote #Full-time

What Is The Role:

As part of the Platform Engineering department, the Traffic team is crafting, building, and improving the multi-cloud platform at scale for Elastic Cloud Hosted and Serverless. We grow and mature our distributed network services and solutions for multiple cloud service provider platforms. We are built on Kubernetes, Go/Scala, and custom orchestration architectures. In your daily life with us, you will participate in coding, innovating technical designs, crafting solutions, improving resilience, and prioritizing security, bug fixes, and features. For example, Debugging Azure Networking for Elastic Cloud Serverless is part of our efforts, and we want your experience to contribute to a truly exceptional customer experience!

What You Will Be Doing:

• Taking an engineering approach in leading technical initiatives for automating network engineering efforts to guarantee the reliability of the global Elastic infrastructure. .
• Growing our global Platform infrastructure to meet the increasing scaling demands by developing and maintaining software, codebases, tooling and automations.
• Collaborating in an environment with an inclusive approach, and focusing on operational perfection which uplifts others.
• Preventing repeated customer impact in response to major incidents and prioritised problem management. Our on call rotation is spread well, and we address complex customer concerns too.

What You Bring:

• 10+ years in Software Engineering with product success in delivering Cloud network solutions. You collaborate with engineers as an authority in identifying, implementing and delivering solutions. Experience in public cloud, Go and managed Kubernetes services is advantageous.
• Success and lessons of experiences from striving for 'progress not perfection' in the name of Platform reliability. We want to hear about your customer first approach in solving operational problems for both today and the future.
• Passion for developing solutions that involve inclusive communication methods to grow and strengthen partner and team relationships. Examples of working in distributed teams or working remotely is desirable.

Bonus Points:

You don't need to have all of these items, but these represent the types of work you will do as a Software Engineer at Elastic.

• You have designed and built a SaaS product in a public cloud ideally built using Infrastructure-as-Code tooling such as Crossplane or Terraform
• You have built Kubernetes-at-scale infrastructure, ideally across multiple cloud providers, and the vital automation to support it.
• You have written product features or functions in Golang or other programming languages.
• You have worked with containerized services (such as Docker.)
• You have proven results in leading and improving cross-team engineering initiatives.
• You have experience in system administration with professional skills in Linux on distributed systems at scale.
• You have diagnosed or designed, implemented and created solutions with the Elastic Stack.
• You are experienced in a self-organizing and sharing in a globally distributed team environment.
• You strengthen team members in bringing out the best of each other by uplifting others with coaching and mentoring.

Why Cast AI?

Cast AI is an automation platform that operates cloud-native and AI infrastructure at scale. By embedding autonomous decision-making directly into Kubernetes and cloud environments, Cast AI continuously optimizes performance, reliability, and efficiency in production.

The old way doesn't work. As Kubernetes and AI environments grow, manual decisions don’t. Cast AI replaces tickets, alerts, and manual tuning with continuous automation that adapts infrastructure as conditions change. Efficiency and cost savings follow naturally from that automation.

Over 2,100 companies already rely on Cast AI, including Akamai, BMW, Cisco, FICO, HuggingFace, NielsenIQ, Swisscom, and TGS.

Global team, diverse perspectives
We're headquartered in Miami, but our impact is international. We take a global and intentional approach to diversity. Today, Cast AI operates across 34 countries spanning Europe, North America, Latin America, and APAC, bringing a wide range of perspectives into how we build and lead. 

Unicorn momentum
In January 2026, we achieved unicorn status with a strategic investment from Pacific Alliance Ventures, the corporate venture arm of Shinsegae Group (a $50+ billion Korean conglomerate). Our valuation now exceeds $1 billion, and we're just getting started.

Join us as we build the future of autonomous infrastructure.

About the role

Databases are notoriously hard to optimize—with 350+ configuration parameters in PostgreSQL alone, even experienced engineers struggle to find the right settings. Have you ever dreamed about a database that continuously self-optimizes itself in the background, so you can focus on what really matters: building great products?

Sometimes your queries slow down and it's not immediately clear why. Imagine a system that proactively detects performance degradation, analyzes the root cause, and automatically improves your queries and indexes for you—creating pull requests with the exact optimizations needed.

CAST AI is seeking a skilled senior software engineer with expertise in databases and interest in understanding the underlying technology that makes them work. Knowledge of implementation details around transactions, wire protocols, WAL, indexes, query planning, and other fundamental database features will enable you to build a product that automates what's traditionally been manual and complex.

You'll work on a greenfield project with high impact, creating intelligent systems that make database optimization effortless for our customers.

This is a location-specific opportunity. We are currently accepting applications from candidates residing in the following European countries: Bulgaria, Croatia, Estonia, Greece, Hungary, Latvia, Lithuania, Poland, Romania, Slovakia, Slovenia, and Ukraine.

Requirements:

• Experience working with and troubleshooting PostgreSQL and/or MySQL in production environments
• Experience troubleshooting database-related issues in one of your previous roles—whether as a DBA, backend engineer, SRE, or any position where you've debugged slow queries, optimized indexes, or resolved production database problems
• Strong programming skills in Go and/or C++
• Strong problem-solving skills and the ability to troubleshoot complex issues in a production environment
• Strong written and verbal communication skills in English
• Ability to work independently and collaboratively within a team
• Startup mindset: adaptable, proactive, and comfortable with ambiguity
• A proactive, problem-solving mindset with a "yes we can" attitude

Here are some of the tools we use daily:

• Mostly Golang with C++ in the most critical data pathways
• Extending Envoy with custom network filters
• ClickHouse and PostgreSQL for business metrics
• GRPC and REST APIs
• GitLab CI with ArgoCD as our GitOps CD engine
• Prometheus, Grafana, Loki, and Tempo for observability
• Deployment charts are written in Helm.

Responsibilities:

• Design, build, and operate database optimization services in Go and C++.
• Develop features for query analysis, index recommendations, and automated performance tuning that deliver measurable database cost savings.
• Extend and maintain integrations with PostgreSQL and MySQL protocols, cloud database services (RDS, Cloud SQL, Azure Database).
• Implement query parsing, plan analysis, and recommendation algorithms that identify optimization opportunities.
• Develop monitoring and alerting systems for database performance metrics, connection health, and cost tracking.
• Shape public and internal APIs with an eye for simplicity and developer experience.
• Participate in design reviews, code reviews, and occasional customer deep‑dives.

What’s in it for you?

• Competitive salary (€6,500 - €9,000 gross, depending on the level of experience)
• Enjoy a flexible, remote-first global environment.
• Collaborate with a global team of cloud experts and innovators, passionate about pushing the boundaries of Kubernetes technology.
• Equity options.
• Private health insurance.
• Get quick feedback with a fast-paced workflow. Most feature projects are completed in 1 to 4 weeks.
• Spend 10% of your work time on personal projects or self-improvement. 
• Learning budget for professional and personal development - including access to international conferences and courses that elevate your skills.
• Annual hackathon to spark new ideas and strengthen team bonds.
• Team-building budget and company events to connect with your colleagues.
• Equipment budget to ensure you have everything you need.
• Extra days off to help maintain a healthy work-life balance.

#LI-Remote

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

Kaseya is looking for a Software Engineer I to join our R&D team working on our industry-leading Backup product.

This is an opportunity to build a strong foundation in backend development and cloud-based systems. You'll work alongside experienced engineers to develop, test, and maintain reliable backup services, while gaining hands-on experience with modern technologies like cloud platforms, containers, and CI/CD pipelines.

You'll be supported through mentorship and code reviews while contributing to systems where reliability, performance, and scalability matter.

Requirements:

• Bachelor's degree in Computer Science or a related technical field, or equivalent practical experience
• 1+ years of professional backend software engineering experience 
• Strong willingness to learn one
• Fundamental understanding of SQL databases (e.g. MySQL)
• Basic knowledge of RESTful APIs
• Familiarity with Git and version control workflows
• Understanding of core programming concepts: data structures, algorithms, OOP
• Basic understanding of Linux/Unix environments
• Exposure to automated testing concepts (unit or integration)
• English proficiency at B1–B2 level for communication and documentation

Nice to Have

• Nice to have experience with Golang or PHP
• Exposure to any public cloud platform (AWS, Azure, or GCP)
• Familiarity with Docker or containerisation concepts
• Basic understanding of CI/CD pipelines
• Awareness of Kubernetes, even at a conceptual level
• Introductory knowledge of networking fundamentals (TCP/IP, DNS)
• Understanding of microservices architecture concepts
• Awareness of basic security principles

WHAT YOU'LL DO

• Develop & Learn: Contribute to backend services and tools under guidance from senior engineers
• Code Quality: Write clean, maintainable code and participate in code reviews
• Testing: Help implement and maintain automated tests
• Debugging: Assist in troubleshooting issues in development and staging environments
• Collaboration: Work closely with team members to deliver features and improvements
• Documentation: Contribute to technical documentation and internal knowledge sharing
• Growth: Continuously develop your skills in backend systems, cloud, and infrastructure

What We Offer:

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

Who we are

At Fluxon, we believe that how you build matters as much as what you build. We help businesses navigate their most important technology decisions with confidence, and take responsibility for seeing them through. Founded by ex-Googlers and startup veterans, we’re proud to partner with teams behind some of the most ambitious products, including Google, OpenAI, Anthropic, Walmart and Stripe. 

Our work spans strategy, design, and engineering — often in complex, AI-driven environments — where clarity, speed and quality are the standard. We use AI intentionally, applying it only where it adds real value and expands what’s possible. Care shapes everything we do.

Inside Fluxon, you’ll find a global, remote-first team of experienced builders, who are curious, kind and serious about their craft. We’re building a place where people can take ownership, solve problems that matter and do work they’re proud to stand behind. If you want to do your best work alongside people who care as much as you do, you’ll feel at home here.

Note: This position is fully remote with a strong preference for a candidate based in Poland (Krakow, Wroclaw or Gdansk)

About the role

As a Staff Software Engineer at Fluxon, you'll drive the end-to-end delivery of products to market while learning, contributing, and growing in partnership with our leadership team

You'll be responsible for:

• Guiding project delivery all the way to the user, leading projects, building and iterating in a dynamic environment
• Partnering directly with clients to understand their needs, and achieve business goals
• Defining product requirements, identifying appropriate system designs and planning development in partnership with our Product and Design teams
• Supporting development of a healthy and effective engineering culture

You'll work with a diversity of technologies, including:

• Languages
  • TypeScript/JavaScript, Java, .Net, Python, Golang, Rust, Ruby on Rails, Kotlin, Swift
• Frameworks
  • Next.js, React, Angular, Spring, Expo, FastAPI, Django, SwiftUI
• Cloud Service Providers
  • Google Cloud Platform, Amazon Web Services, Microsoft Azure
• Cloud Services
  
  • Compute Engine, AWS Amplify, Fargate, Cloud Run
  • Apache Kafka, SQS, GCP CMS
  • S3, GCS
• Technologies
  
  • AI/ML, LLMs, Crypto, SPA, Mobile apps, Architecture redesign 
  • Google Gemini, OpenAI ChatGPT, Vertex AI, Anthropic Claude, Huggingface
• Databases
  • Firestore(Firebase), PostgreSQL, MariaDB, BigQuery, Supabase
  • Redis, Memcache

Qualifications

• 7+ years of industry experience in software development
• Experience leading development through the full product lifecycle, including CI/CD, testing, release management, deployment, monitoring and incident response
• Fluent in the design and implementation of scalable system architectures, data structures and algorithms, and effective development practices

What we offer

• Remote-first, flexible work with a budget to set up a work space that works for you
• Localized healthcare coverage to support you and your family’s wellbeing
• Flexible paid time off with a minimum of 3 weeks per year (plus holidays)
• "No internal meetings" Fridays, so you can focus on deep, uninterrupted work
• A professional growth budget for learning that matters to you –  whether it’s developing your technical skills or learning a new language
• A monthly wellness allowance to support your physical and mental health
• Annual company offsites, where we gather in person to build meaningful connections
• A competitive salary that reflects your expertise, impact and experience
• Profit-sharing, so you can benefit directly from the value we build together
• A paid sabbatical program, designed for rest, renewal and fresh perspective

Who we are

At Fluxon, we believe that how you build matters as much as what you build. We help businesses navigate their most important technology decisions with confidence, and take responsibility for seeing them through. Founded by ex-Googlers and startup veterans, we’re proud to partner with teams behind some of the most ambitious products, including Google, OpenAI, Anthropic, Walmart and Stripe. 

Our work spans strategy, design, and engineering — often in complex, AI-driven environments — where clarity, speed and quality are the standard. We use AI intentionally, applying it only where it adds real value and expands what’s possible. Care shapes everything we do.

Inside Fluxon, you’ll find a global, remote-first team of experienced builders, who are curious, kind and serious about their craft. We’re building a place where people can take ownership, solve problems that matter and do work they’re proud to stand behind. If you want to do your best work alongside people who care as much as you do, you’ll feel at home here.

Note: This position is fully remote with a strong preference for a candidate based in Poland (Krakow, Wroclaw or Gdansk)

About the role

As a Senior Software Engineer at Fluxon, you'll have the opportunity to bring products to market while learning, contributing, and growing with our team.

You'll be responsible for:

• Driving end-to-end implementations all the way to the user, collaborating with your team to build and iterate in a dynamic environment
• Engaging directly with clients to understand business goals, give demos, and debug production issues
• Informing product requirements, identifying appropriate technical designs in partnership with our Product and Design teams
• Proactively communicating progress and challenges in your work and seeking help when you need it
• Performing code reviews and cross-feature validations
• Providing mentorship in your areas of expertise

You'll work with a diversity of technologies, including:

• Languages
  • TypeScript/JavaScript, Java, .Net, Python, Golang, Rust, Ruby on Rails, Kotlin, Swift
• Frameworks
  • Next.js, React, Angular, Spring, Expo, FastAPI, Django, SwiftUI
• Cloud Service Providers
  • Google Cloud Platform, Amazon Web Services, Microsoft Azure
• Cloud Services
  
  • Compute Engine, AWS Amplify, Fargate, Cloud Run
  • Apache Kafka, SQS, GCP CMS
  • S3, GCS
• Technologies
  
  • AI/ML, LLMs, Crypto, SPA, Mobile apps, Architecture redesign 
  • Google Gemini, OpenAI ChatGPT, Vertex AI, Anthropic Claude, Huggingface
• Databases
  • Firestore(Firebase), PostgreSQL, MariaDB, BigQuery, Supabase
  • Redis, Memcache

Qualifications

• 5+ years of industry experience in software development
• Experienced with the full product lifecycle, including CI/CD, testing, release management, deployment, monitoring and incident response
• Fluent in software design patterns, scalable system architectures, tooling, fundamentals of data structures and algorithms

What we offer

• Remote-first, flexible work with a budget to set up a work space that works for you
• Localized healthcare coverage to support you and your family’s wellbeing
• Flexible paid time off with a minimum of 3 weeks per year (plus holidays)
• "No internal meetings" Fridays, so you can focus on deep, uninterrupted work
• A professional growth budget for learning that matters to you –  whether it’s developing your technical skills or learning a new language
• A monthly wellness allowance to support your physical and mental health
• Annual company offsites, where we gather in person to build meaningful connections
• A competitive salary that reflects your expertise, impact and experience
• Profit-sharing, so you can benefit directly from the value we build together
• A paid sabbatical program, designed for rest, renewal and fresh perspective

The Spark email app stands as one of our flagship products, designed for various platforms, including iOS, macOS, Android, and Windows. Our mission at Spark has always been to make you love your email experience - we started by making email smart, and improved team collaboration, and now we’ve tackled information overload to make email focused. Our core features are designed to heighten your focus and allow you to create customized workflows that suit your needs.

About the role:
As a Senior Back End Engineer, you will architect robust backend services for tasks like database scaling, synchronisation across devices, and integration with other services (e.g., calendars); and optimise the performance of critical components. You will contribute to the team's growth by mentoring newcomers, conducting code reviews, and fostering a culture of knowledge sharing.

What you’ll do:

• Build distributed, scalable, and fault-tolerant systems in the cloud using Golang.
• Develop tools for running and monitoring the system and ensure reliable operations at optimal performance.
• Work closely with the product manager and client development teams to define architecture, protocols, and requirements for new functionalities.
• Collaborate with the team and contribute to the overall success of the project

About you:

• Strong background in backend development, including high proficiency in Golang
• Experience with distributed systems and high-load services
• Knowledge of relational database systems and key-value stores
• Basic knowledge of Kubernetes
• Experience with cloud platforms like AWS or GCP
• You demonstrate a deep passion for the products you contribute to
• You're great at thinking ahead, foreseeing how your work shapes the user experience 
• You know how to deliver product quality in optimal development time
• You have a keen eye for both zooming in on details and seeing the big picture
• You are highly flexible and self-motivated, with the ability to work independently and in a team

Would be a plus:

• Knowledge of data structures and algorithms (DSA)
• DevOps skills 
• Familiarity with NoSQL
• Experience in front-end development using modern Javascript frameworks
• Contributions to the open-source community
• Experience with scripting languages like Python, Ruby, Shell