Top Software Engineer Jobs in Poland

Own the full software development lifecycle for JetBrains identity and access services. Develop and operate reliable Kotlin-based services, with some Go, supporting authentication, authorization, organizations, memberships, groups, and workspaces. Design new platform features, improve existing production systems, review code, manage integrations, and address JVM and PostgreSQL performance in distributed, multi-tenant SaaS environments.

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

Lead technical strategy, architecture, and cross-team initiatives for scalable mobile applications using Kotlin Multiplatform and Jetpack Compose. Partner with Product and Design on roadmaps, mentor engineers, establish engineering best practices, and ensure system quality, maintainability, and resilience. The role also involves using and critically auditing generative AI tools, with backend Java Spring experience considered beneficial.

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.

Develop and maintain scalable Java 17+ backend applications with Spring Boot, BPM workflows, REST APIs, and AWS deployment. Build CI/CD pipelines, automated test suites, monitor performance with Datadog/Elasticsearch, troubleshoot production, collaborate in Agile teams, and follow secure coding and code review practices.

Develop and maintain high-performance, highly available Java-based microservices in a Scrum team. Build scalable trading platform features, ensure low-latency data processing, contribute to architecture and code quality, and collaborate across teams to deliver production-ready solutions.

Develop and maintain a Network Management Provisioning Manager using Java backend and web frontend. Work in a Scrum team with CI/CD pipelines, Tomcat, Hibernate, PostgreSQL, RHEL and KVM. Contribute code using human and AI-assisted code generation and review, operate mostly unsupervised, and collaborate across user stories in a hybrid work environment.

The iOS RTC Software Engineer is responsible for developing and optimizing Viber calls on iOS, including WebRTC integration, signaling protocol, and optimizing media processing.

Develop and maintain the web-based admin console and desktop app for Identity Recovery (AD, Entra ID, Okta). Own UX for complex recovery workflows, real-time notifications, auth/account UI, and contribute full‑stack backend services. Drive SaaS migration, integrate AI capabilities, collaborate with product and customer teams, and ensure scalable secure enterprise experiences.

The Software Engineer will develop and maintain developer tools, design CI/CD pipelines, manage AWS infrastructure, and enhance platform capabilities. They will also collaborate with application engineers to improve developer productivity and ensure high-quality code delivery.

The Software Engineer will work on the API team, focusing on delivering high-resolution imagery and location data, optimizing APIs, and collaborating with Product teams.

The role involves designing and developing cloud-based applications using Go, leading distributed systems implementation, and collaborating with teams to meet project goals.

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.

Design and build data architectures and pipelines, optimize data management, collaborate with AI teams, and implement best engineering practices.

Design, develop, debug, test, and support full-stack healthcare applications and web services. Collaborate with engineering and product teams to translate healthcare workflows into scalable, secure software. Contribute to system architecture, observability, code reviews, sprint planning, and technical improvements while using AI-assisted tools responsibly.

Designs, builds, and operates secure, scalable full-stack cloud services processing petabytes of data weekly. The Staff Software Engineer provides technical direction across frontend, backend, and data layers; resolves complex cross-team problems; establishes engineering standards for performance, reliability, scalability, and security; aligns technical execution with product strategy; and mentors senior and lead engineers.

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.

Lead backend engineer for EU cards: set technical strategy, design low-latency transaction and post-transaction ledgering/reconciliation systems, ensure operational availability (monitoring, on-call, playbooks), collaborate cross-functionally, define code/design standards, and mentor and grow engineering talent.

Lead a backend engineering team to deliver quarterly goals, design and build low-latency transaction and post-transaction systems, collaborate with product and design, ensure operational availability and on-call readiness, improve code and design standards, and mentor engineers.

The Software Engineer will design, develop, and support the MEMX Trading system software, focusing on production support during US evening hours.

Design, build, and optimize GPU-accelerated deep learning inference software and frameworks (e.g., SGLang, vLLM). Profile and tune LLM and Generative AI model serving across NVIDIA accelerators, contribute code to inference libraries, and collaborate across teams to deploy high-performance multi-GPU solutions.

Six-month on-site internship in Krakow contributing to process automation solutions for international clients. Work with PMG, Oracle APEX, Microsoft Power Platform, UiPath, and SQL to build business applications and automated workflows. Support requirements analysis, testing, and technical documentation while collaborating with consultants, developers, and clients. Mentored role aimed at developing toward a Technical Consultant. Requires basic automation, SQL and frontend knowledge, B2 English, C1 Polish, and 35–40 hours/week availability.