Top Software Engineer Jobs in Warsaw

Build and maintain hardened Ubuntu-based container images and the automated CI/CD pipelines to build, test, scan, sign, publish, and retire them. Integrate upstream open-source projects, ensure security and cloud-native compatibility, collaborate with cross-functional teams, document and share knowledge, mentor colleagues, and contribute to hiring. Work in a distributed agile environment with occasional travel.

Work as a hands-on full-stack Software Engineer in a cross-functional squad building cloud-native features and services. Write TypeScript for frontend and backend, build/consume REST and GraphQL APIs, write tests, use CI/CD and Terraform to deploy to AWS, participate in code reviews and improve workflows including AI tooling.

Build and scale a blockchain data platform handling petabytes of on-chain data. Design and implement distributed systems, data ingestion/decoding pipelines, and performant SQL processing. Write production code (Kotlin, Go, Java, Rust), improve developer experience, automate operations (including AI-driven automation), and own platform components.

Lead and deliver Repayment UX mobile features using React Native; define technical plans, collaborate with product/design/analytics, support production availability and on-call, mentor engineers, improve code and design standards, and drive quality and ownership across the team.

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.

Develop and optimize algorithms for battery and renewable energy projects, analyze market data trends, and ensure algorithm performance.

Build and maintain a production Android app in Kotlin with AI-native features. Integrate chat, vision, and voice via backend APIs; design streaming UX patterns; optimize performance and memory for AI-heavy flows; implement analytics, logging, and feedback; collaborate with backend and ML teams to ensure stability, security, and scalability in production.

As a Backend Software Engineer, you'll design scalable backend systems, optimize database performance, and collaborate with front-end and DevOps teams.

Contribute to Juju's development, collaborate with teams on distributed systems, debug issues, and enhance cloud automation features.

Design and develop backend services, APIs, CRM integrations, enrichment workflows, and synchronization services. Own software through production, improve reliability and performance, write automated tests, participate in reviews and architecture discussions, and collaborate with Product, Customer Success, Data Engineering, and Platform teams. The role involves AWS, microservices, Kafka, databases, CI/CD, and production support.

The Staff Software Engineer will lead technical strategy, mentor engineers, and drive development for full stack systems impacting customer experience.

Prepare UAVs for deployment by inspecting assemblies, integrating electronic components, flashing and configuring firmware, conducting bench tests and test flights, verifying ground-control connectivity, diagnosing faults, performing maintenance, and maintaining technical documentation. The role requires hands-on soldering, UAV systems knowledge, Linux terminal skills, and familiarity with major flight-control and ground-station tools.

Software Engineers at QuantCo will design and develop scalable solutions, integrate models into client businesses, and improve products based on client feedback.

As an Ubuntu Core Software Engineer, you will design and implement features for the embedded Linux operating system, maintain boot mechanisms, debug system-level issues, and collaborate with a global team.

Set the technical direction for Elastic Cloud application networking, including ingress, private connectivity, DNS, and security controls. Lead architecture and development of scalable distributed systems, cross-organizational initiatives, incident investigations, reliability improvements, and operational quality. Mentor engineers, advise product and engineering stakeholders, and champion improvements to security, stability, observability, and cost efficiency. Participate in on-call rotations and own projects from proposal through general availability.

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 and implement backend trading services, own features end-to-end (schema, API, tests, UI integration), contribute to real-time infrastructure and client-facing APIs, and write integration tests against real dependencies.

Full-stack Developers at QuantCo build user interfaces for machine learning solutions, collaborating with data scientists and engineers to deliver actionable products.

The Senior Salesforce Engineer will implement and architect Salesforce solutions, ensuring code quality, conducting peer reviews, and managing deployment cycles.

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.

Architect and implement backend services for high-scale cloud infrastructure. Build APIs, distributed and event-driven systems, asynchronous workflows, and scalable platform capabilities. Deploy and support services across cloud environments using CI/CD and Infrastructure as Code. Apply observability through logs, metrics, and traces, troubleshoot production issues, participate in technical design and code reviews, and use AI-assisted engineering tools while maintaining service ownership.

Staff Software Engineer responsible for leading architectural evolution across a distributed rendering platform, contributing to core backend systems, and improving performance, reliability, scalability, testing, and delivery practices. The role includes mentoring engineers through pairing and design reviews, unblocking teams, shaping technical strategy, improving CI/CD and tooling, and aligning engineering investments with product and business goals.

Build and maintain integrations for North's agentic platform, own the end-to-end integration pipeline, create evals and tests to ensure reliability, tune tool descriptions, and help other engineers add and maintain integrations while using AI responsibly to improve performance and quality.