Top Software Engineer Jobs in Warsaw

As a Software Engineer, you will implement and maintain scalable, reliable components for the Akamai Inference Cloud platform, focusing on cloud-native technologies, distributed systems, and API development.

Design, build, and operate low-latency, strongly consistent distributed database systems. Implement replication, consensus, caching, and performance improvements. Run and maintain production services including on-call rotation, collaborate on roadmaps and system designs, and write performance-critical code in systems languages.

Build and maintain backend Collections platform to manage delinquent loans, develop recovery strategies, ensure high availability and reliability, implement monitoring and metrics, support operations and on-call, collaborate with product, risk, design and analytics, write well-tested extensible code, perform code reviews and debugging, and participate in team growth activities.

The Infrastructure Software Engineer will build and optimize systems managing vast data, collaborate with teams for reliability, and handle operational issues.

Join the Collections backend team to design, build, and maintain scalable, highly available systems that manage delinquent loans and recovery strategies. Collaborate with product, risk, and engineering teams to implement reliable, well-tested backend solutions, debug large codebases, and contribute to team growth and operational excellence.

The Senior Infrastructure Software Engineer will build scalable systems, manage large data, and innovate solutions for performance and reliability, impacting millions of users.

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, including LLM inference infrastructure, RAG, AI agents, and evaluation/observability. Design and run experiments (A/B tests), optimize systems for production performance and reliability, and iterate rapidly with product and design partners.

Build and evolve Circle Discover marketplace features: high-converting purchasing flows, algorithmic recommendations, content feeds, and listings. Work across a Ruby on Rails backend and React/Next.js front-ends, optimize performance and SSR/SSG, collaborate with designers and leaders, and improve codebase quality while shipping at pace in a distributed remote team.

Design and develop scalable full-stack applications, MVPs, prototypes, backend services, and modern frontend solutions. Integrate APIs, databases, and cloud services while collaborating with product owners, architects, AI engineers, and business stakeholders. Translate innovation concepts into software, support emerging technology experimentation, and follow engineering best practices including testing, code reviews, documentation, and version control. The role supports multiple client-facing projects and requires adaptability and travel as needed.

Develop systems for monitoring and predicting flight trajectories in aviation and defense. Create and deploy features tackling real-world optimization problems using a modern tech stack.

Build scalable backend systems and data pipelines to power consumer credit reporting. Partner with Product, Compliance, Servicing, and Credit teams to design robust reporting systems, ensure operational availability, monitor metrics, support on-call, write well-tested code, debug large codebases, and contribute to team growth and hiring efforts.

Build, deploy, and productionize enterprise-grade AI solutions and agents using Snowflake AI Platform. Architect scalable ML pipelines, data models, ETL/ELT processes, and observability. Partner with customer data science and engineering teams to translate business needs into production systems, iterate rapidly, and ensure operational excellence and performance at scale.

Work on Servicing International to build purchase protection (disputes/refunds) and agent tooling. Implement web UIs and scalable APIs, collaborate with global teams, participate in on-call rotation, and deliver well-tested, maintainable code.

Build and lead a curated Python platform (Paved Path) for Netflix engineers: design internal Python libraries, improve runtime/dependency/build/packaging, enable testing/delivery/monitoring, perform large-scale repository refactors, collaborate cross-functionally, and participate in support/on-call rotations.

Design, build and operate containerised Spring Boot and Python microservices and RESTful APIs on AWS (ECS). Implement event-driven integrations with Kafka/MSK, ensure API security, CI/CD, observability, and collaborate with architects, data engineers and product teams to deliver reusable integration patterns for an Operational Data Store.

Develop and maintain the JetBrains Runtime to ensure IDEs run fast and render well. Provide low-level support for UI frameworks (Swing, Compose for Desktop), work on OpenJDK projects, implement hardware-accelerated rendering (Metal/Vulkan/OpenGL/D3D), fix JBR issues, and optimize/refactor cross-platform system UI code for Windows, macOS, and Unix.

Join a scrum team to develop and support enterprise post-trade/financial-instrument lifecycle products. Write C# code, work with APL, implement features, create and run automated and manual tests, collaborate on requirements, support legacy systems, participate in sprint ceremonies, and continuously improve development practices while growing toward full-stack knowledge.

Build robust, scalable enterprise software for Island’s security and workplace platform. Responsibilities include applying software engineering fundamentals, designing efficient solutions to complex problems, writing clean and maintainable code, implementing automated tests, collaborating with engineers, adapting to evolving technologies, and delivering reliable software in an agile, hybrid environment.

Lead design and implement scalable, cloud-native backend services and APIs (Java/Kotlin, Spring Boot). Drive architecture, automation (build/deploy/monitor), mentor engineers, support integrations, and contribute to API client signing/encryption open-source projects while collaborating with global teams.

Lead design and build scalable, cloud-native backend APIs (Java/Kotlin, Spring Boot). Drive architecture, automation (CI/CD), API security, mentor engineers, collaborate with global teams, and support customer integrations.

Lead design and implement scalable, cloud-native backend services and APIs for a global API platform. Drive architecture and delivery, automate build/deploy/monitoring, mentor engineers, perform code reviews, and support customer integrations.

Lead design and implement scalable, high-performance backend services and APIs for a global API platform. Drive architecture, deliver cloud-native solutions, adopt automation for build/deploy/monitoring, contribute to open-source API signing/encryption projects, mentor engineers, and support customer integrations across a global Agile team.

Lead design and develop scalable, high-performance backend systems and APIs for a global API platform. Drive architecture and hands-on implementation, automate build/deploy/monitoring, contribute to open-source client signing/encryption libraries, support customer integrations, mentor engineers, and work with global teams in an Agile delivery model.

Lead design and develop scalable, cloud-native API platform services. Drive architecture and implementation, deliver and iterate features, ensure automation (build/deploy/config/monitor), contribute to open-source client libraries, mentor engineers, support customer integrations, and enforce API security and engineering excellence in an Agile global team.

Develop and optimize backend systems for a trading platform, ensuring scalability, security, and high performance while collaborating with cross-functional teams.