Top Software Engineer Jobs in Warsaw

Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, design and run experiments (A/B tests and AI evaluations), implement AI infrastructure for reliable LLM inference, and iterate quickly to scale production-ready LLM-powered products.

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

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

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.

As a Full-stack Software Engineer, you will develop backend systems, integrate frontend applications, and solve complex problems in a collaborative team environment.

As a Software Engineer at Coupa, you'll design and develop platform systems, advocate best practices, and improve operational processes, contributing to a collaborative team focused on creating high-quality SaaS solutions.

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.

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.

Own and improve the RustRover debugger across a C++ OS-specific backend (LLDB/GDB) and a Kotlin/Java IntelliJ client. Implement run/debug configs, enhance Rust expression evaluation, diagnose OS-specific C++ crashes, and design maintainable, well-tested debugger code while collaborating with QA and support.

Design, develop, and maintain scalable C#/.NET Core backend APIs and services; optimize database performance (MongoDB, SQL Server); ensure reliability via SLAs, monitoring, alerting, incident response; manage CI/CD, UAT, deployments; collaborate with cross-functional teams; write tests, participate in code reviews, and support production incidents.

Lead SRE-focused projects to build AI/LLM-driven reliability tooling and self-healing systems. Define SLIs/SLOs, guide architecture for resilience, automate incident response, embed validation in CI/CD, champion Chaos Engineering, manage internal platforms, and mentor engineers.

Build and own full-stack systems for Treasury: design and implement responsive SPAs and backend services using modern .NET. Lead projects across the SDLC, modernize legacy margin/financing platforms, integrate analytics and UI components, troubleshoot production issues, improve observability, and mentor teammates while collaborating with treasury and quant stakeholders.

Design, standardize, and implement secure development frameworks and automation for network security. Build modular automation, APIs, and CI/CD pipelines to scale network controls; collaborate with cloud, infrastructure, and incident response teams to maintain reliability, testing, and operational excellence across on-prem and cloud network protections.

The Software Developer will design and develop web applications, improve system reliability, and collaborate on architecture and deployment strategies.

The Software Engineer will design and implement scalable backend systems, focusing on performance and collaborating on optimizations. Responsibilities include development using AWS and serverless architecture, maintaining software quality, and performance tuning.

Seeking a mid/senior software engineer to develop software for public health and food security projects in Sub-Saharan Africa, with a focus on collaboration, design sessions, and flexible working.

Develop and maintain production-grade backend services for financial markets, exposing REST APIs. Improve architecture, scalability, performance, and resilience. Collaborate with traders, quants, and business experts. Implement CI/CD and automated testing, troubleshoot production issues, and promote high-quality engineering practices.

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.

The Software Engineer will integrate corporate systems with external SaaS, develop web applications, design APIs, automate processes, and mentor team members while ensuring performance and reliability of corporate platforms.

Front-end engineer responsible for building and maintaining complex Angular (2+) applications, using reactive patterns (RxJS/observables), writing unit tests, optimizing web performance, producing documentation, and collaborating with design, security, operations, and product teams.

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.

Lead development and test architecture for enterprise investment-operations products. Provide technical leadership, balance hands-on coding (C#, Angular, APL) with automation-first testing (E2E, API, integration), CI/CD improvements, root-cause analysis, and mentoring. Collaborate cross-functionally to align technical and quality goals and drive engineering process and tooling improvements.

Contribute across front-end and back-end (SOA) in a Scrum team: design, implement, test (automation and manual), own feature delivery, improve CI/CD and pipelines, participate in architecture decisions, and mentor junior engineers.

Design, implement, and maintain front-end and back-end features in a Scrum team; own feature delivery, CI/CD and automation (E2E/API/Integration) testing; perform exploratory testing; contribute to architecture and technical decisions; mentor junior engineers and improve development pipelines and engineering practices.

Design, develop, optimize, and refactor .NET full-stack solutions. Define interfaces and architecture, implement secure patterns, troubleshoot production issues, perform code reviews and testing, estimate projects, and mentor other engineers.