Top Software Engineer Jobs in Warsaw

Lead quality engineering for portfolio analysis products: design and maintain automated tests for APIs/backends, perform exploratory testing, integrate quality gates in CI/CD, analyze production issues, and contribute C# tooling and test strategies.

Design and implement scalable backend services and APIs with tight AI/LLM integration. Collaborate with product and data science teams to operationalize models, deploy microservices (Docker/Kubernetes), maintain CI/CD and reliability, mentor junior engineers, drive technical best practices, ensure security and compliance, and lead feature development and documentation.

Design, implement, and maintain scalable backend services and APIs with LLM/AI integration. Collaborate cross-functionally to operationalize AI models, lead projects, mentor engineers, ensure reliability, security, and CI/CD-driven deployments, and drive technical best practices.

The Senior Software Engineer will design, build, and optimize backend services and Kubernetes operators on multi-cloud platforms, focusing on infrastructure solutions and automation.

As a Senior Software Engineer, you will develop and manage a MongoDB solution on various platforms, ensuring reliability and security while contributing to a small team focused on impactful projects.

Design and maintain backend services and data pipelines, develop front-end features, optimize solutions, and collaborate with teams to drive impactful features.

Design, develop, and maintain high-quality software for automated document-processing products. Collaborate with stakeholders to translate business needs into product improvements, contribute to architecture and technology decisions, conduct code reviews, optimize scalability and performance, lead major technical initiatives, mentor teammates, and improve engineering practices.

Lead the API development team to design and implement software solutions, delivering scalable APIs while championing best practices and mentoring team members.

Senior Software Engineer will build and own backend-focused fullstack features across AI Retrieval, Infrastructure, or Product teams. Responsibilities include improving search/retrieval quality and latency, building scalable backend systems, contributing to embeddings/ML-powered search, collaborating cross-functionally, and shipping production-ready code in a continuous deployment environment.

Senior full‑stack engineer responsible for designing, implementing and maintaining front‑end and back‑end features, owning feature delivery, driving test automation and CI/CD, contributing to architecture, mentoring teammates, and improving development processes within an enterprise fintech product.

Lead technical design, development, and test automation for enterprise investment-operations software. Drive automation-first practices, CI/CD improvements, test architecture, and mentoring. Collaborate with cross-functional stakeholders, perform root-cause analysis, and implement tooling and process enhancements to ensure high-quality delivery.

Design, develop, and maintain backend systems (currently in APL), drive technical design and architecture, mentor teammates, ensure code quality via unit/integration tests and CI/CD, diagnose performance issues, use Git workflows, and collaborate with product and cross-located teams to deliver Private Debt functionality.

Lead design and development of backend systems using C# and APL, architect cloud-native solutions, mentor engineers, and ensure system reliability with automated testing.

Lead design, development, and test-automation for enterprise investment operations products. Provide technical leadership, define test architecture, drive automation-first practices, improve CI/CD pipelines, mentor engineers, and collaborate with stakeholders to ensure high-quality delivery.

Lead hands-on SRE/DevOps engagements to improve CI/CD, automated testing, secure deployments, observability, dependency updates, containerization, and cross-datacenter resilience. Drive TDD, test data/masking, library/runtime upgrades, Renovate automation, branch/source control best practices, secrets management, and automated DB and software deployment processes.

Design, build, test, deploy, and support distributed, cloud-native Import/Export services. Create resilient architectures meeting SLO/SLA targets, own production systems and on-call duties, drive observability and CI/CD automation, mentor engineers, and partner with Product to shape the roadmap.

Lead the technical direction and hands-on development of Coder’s agentic engineering systems. Build production software in Go, with React and TypeScript as needed, and evolve agent execution, tool use, context management, streaming, and long-running workflows. Make architectural decisions, lead complex projects, improve reliability and performance, collaborate with Product and Design, and mentor engineers. The role requires distributed systems expertise, LLM and agentic workflow experience, and familiarity with AWS and cloud-native infrastructure.

Build and improve Restream’s web interfaces and user-facing features for the AI Clips team. Design UI and business logic, collaborate with product designers, participate in code reviews, improve system reliability, and evaluate emerging technologies. The role requires strong JavaScript and TypeScript expertise, advanced React knowledge, CSS preprocessor experience, and familiarity with backend development, cloud infrastructure, containers, and continuous deployment.

Senior individual contributor responsible for designing, developing, and supporting large-scale software applications and data platforms. Leads technical design, implements ETL and big-data solutions, builds CI/CD and infrastructure-as-code, mentors engineers, and collaborates with cross-functional stakeholders to deliver scalable, secure cloud solutions.

Design, own, scale, and iterate data processing pipelines for Mapbox Roads. Implement new pipelines, monitor performance metrics, and enforce security best practices. Collaborate in a cross-functional team to build navigation and high-definition mapping features.

Lead design and ownership of shared libraries, Spring Boot starters, and agentic frameworks. Set standards for agent orchestration, evaluations, and guardrails. Mentor teams on Python-based agents (LangChain/LangGraph), drive adoption, prototype research directions, and improve developer experience across Kotlin backend and client libraries.

Design, build, and scale production AI agents and backend services for conversational reasoning, retrieval, tool-calling, and workflow automation. Integrate GDS/APIs, own architecture for distributed AI systems, improve model performance, observability, and evaluation, and define engineering best practices.

Lead architectural and code-level performance engineering for Elasticsearch, from design through production. Develop performance models, optimize distributed systems, profile bottlenecks, build benchmarks and regression detection, and automate profiling and optimization with AI-assisted tooling. Collaborate across teams, embed performance practices into product development, and mentor engineers. The role requires deep Java and JVM expertise, concurrency knowledge, distributed systems experience, and proficiency with performance benchmarking and optimization.

Develop and maintain NedGraphics cloud collaboration platform and integrations. Build serverless AWS backends, secure REST APIs and event-driven workflows, ensure performance and security, implement automated testing, and produce developer-friendly documentation for third-party and ERP/PLM integrations.

Own and build foundational backend services: identity, authorization, audit logging, data pipelines, and low-latency APIs. Architect, implement, monitor, and refactor distributed microservices ensuring high consistency, observability, and automation while partnering with Product and cross-functional teams.