Top Software Engineer Jobs in Poland

Canonical seeks open-source enthusiasts to optimize Ubuntu for new silicon technologies, collaborating with teams and customers to enhance software quality and performance across various platforms.

Build and ship full‑stack features for North, an enterprise AI workspace. Develop secure autonomous agents, execution engines, integrations, observability and evaluation systems. Collaborate with researchers to productionize models and deliver performant, low‑resource deployment code while adhering to strict security and privacy constraints.

Build and maintain scalable backend services within cross-functional squads. Design, develop, test, and deploy features; ensure performance, code quality, and automation; troubleshoot, fix bugs, and share knowledge to deliver solutions on schedule.

Develop and improve the next generation of AI-driven UI for a simulation tool, enhancing performance, scalability, and reliability.

Design, build, and own scalable backend systems and APIs for the Horizons platform using Node.js and TypeScript. Optimize performance, integrate third-party APIs, implement data storage solutions, ensure test coverage and observability, collaborate with frontend and product teams, and grow engineering skills toward senior-level system design and scalability.

Lead backend engineering and AI-agent integration efforts: design agent-ready systems, context pipelines, CI/CD and test guardrails, migrate monoliths to microservices, set API and schema standards, mentor engineers, and drive AI-assisted development practices.

Lead AI-native backend development: design agentic workflows and context pipelines, write agent-actionable specs, build scalable cloud services (AWS), maintain CI/CD, databases, GraphQL/REST APIs, mentor engineers, manage incidents, and drive delivery of complex initiatives using AI as an accelerator.

Develop enterprise software supporting network planning and maintenance. Work in an Agile/Scrum team to build REST APIs, front-end features, database integrations, implement CI/CD, and write unit and integration tests.

Support migration and modernization of database systems (Sybase to PostgreSQL), analyze applications and stored procedures, design and develop Java-based microservices, migrate business logic from DB layer to services, refactor monoliths, contribute to architecture and technical decisions, and explore AI opportunities.

Migrate legacy Java applications to Spring Boot, remove EJB/JMS, standardize OpenAPI-driven APIs, integrate via Kafka, implement tests, define Kubernetes deployments, design CI/CD pipelines, keep dependencies updated with OpenRewrite/Renovate, and explore AI-assisted code review tools.

Develop and maintain Java/Spring Boot backend services for sales and commission processing. Implement business requirements, enhance components, write unit/integration tests (JUnit, Mockito), debug and optimize performance, and collaborate with the team to deliver scalable, reliable solutions.

Lead migration of Order Management systems from JBoss/WildFly and older Java versions to cloud-native Spring Boot with modern Java. Develop and maintain integration services and microservices, support legacy-to-cloud transitions, and contribute to business process automation and orchestration while collaborating with cross-functional teams.

Design, develop, and maintain banking applications in an Agile Scrum team. Collaborate with BAs and QA, ensure security and reliability, create and maintain unit/automated tests, work with large-scale datasets, integrate with internal banking systems, and optimize existing solutions to meet business and technical requirements.

Develop and maintain backend services and tools for global Product Catalog management, build solutions to improve catalog data quality, create tools for brands and distributors, and collaborate with product and data engineering teams to scale backend systems.

Develop and maintain Java/Spring Boot backend microservices for application modernization and migration. Design REST APIs, refactor legacy code, write automated tests (JUnit/Mockito), and support CI/CD, Docker/Kubernetes, and software quality processes within Agile teams.

Build infrastructure and automation frameworks for Snowflake's cloud SaaS platform. Design and implement CI/CD pipelines, testing infrastructure, and developer tooling to improve velocity, reliability, and testability. Collaborate across teams to define policies, measure engineering velocity, and drive adoption of best practices.

Build and own backend domains end-to-end for search and e‑commerce. Design, implement, and test scalable APIs and services using Java/Kotlin and Spring Boot. Work with cloud infrastructure (GCP), Terraform, SQL, CI/CD, and search/graph technologies to improve product findability and customer experience.

Design, build, and operate low-latency treasury and financing systems using C#/.NET and React. Partner with traders and ops to translate requirements, implement DevOps and CI/CD, write automated tests, support production incidents, and mentor a distributed team while introducing scalable architecture and new technologies.

Design, build, and operate backend services for an AI-driven financial assistant. Own full SDLC, ensure performance, scale, resilience, and collaborate in small autonomous teams.

Build and ship native Android features in Kotlin for an AI-enabled neobank. Collaborate with product and design to create clean user journeys, integrate backend APIs, improve performance and reliability, use analytics and production data to iterate, and implement on-device AI where it improves the UX.

Design and implement in-product ease-of-use features for Fusion (Assistant, Insights, Walkthroughs). Develop C++ client and web components (JS/TypeScript/React), write clean tested code, use AI-assisted workflows responsibly, instrument features, analyze adoption metrics, debug defects, and collaborate across product, design, QA, and engineering.

Develop C/C++ features and improve Java-based test harness for mission-critical dispatch console systems. Collaborate in an agile team with continuous integration, apply basic networking knowledge, and be available for part-time onsite work in Krakow.

Responsible for building scalable distributed systems, mentoring teammates, innovating on technical solutions, and improving team processes. Requires expertise in backend languages, especially Golang and Typescript.

Hands-on software engineering internship participating in full SDLC to build web applications. Work includes back-end development with .NET/C#, front-end with React and TypeScript, databases/SQL Server, REST API integration, Git, and exposure to AWS, Jenkins, and Spacelift/CI-CD.

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.