5+ years of professional experience in backend development
Strong knowledge of Java and Spring / Spring Boot
Solid experience with REST APIs
Practical experience with microservices
Experience working with relational databases
Good understanding of software development best practices, testing and CI/CD
Experience building scalable and reliable applications
Good command of English
Ability to work independently and take ownership of technical solutions
Nice to have:
Experience working in the travel, aviation or e-commerce industry
Experience with cloud platforms such as AWS, Azure or GCP
Knowledge of event-driven architecture and messaging systems (e.g. Kafka )
Experience with Docker, Kubernetes and modern deployment practices
Familiarity with AI-powered development tools (e.g. GitHub Copilot, Claude Code, Cursor) or experience using AI to improve engineering workflows
Experience integrating AI/LLM-based solutions into applications
Experience working in international and distributed engineering teams
We are looking for an experienced Senior Java Developer to join an international team working on modern digital solutions for the travel and aviation industry .
You will be involved in developing scalable backend solutions that support digital customer journeys, online booking, additional services and travel management.
What we offer:
Private healthcare
Multisport,
Hybrid working model (from Kraków),
Work on a modern product used in the travel & aviation industry
International environment and experienced engineering team
Opportunity to influence technical solutions and architecture
B2B contract
Long-term cooperation and opportunities for professional growth
,[Developing and maintaining backend applications using Java, Designing and developing REST APIs and integrations, Working with microservices architecture, Taking part in technical design and architectural decisions, Building scalable, reliable and high-quality solutions, Collaborating closely with frontend developers, QA, DevOps and other technical specialists, Participating in code reviews and knowledge sharing, Contributing to the continuous improvement of development practices] Requirements: Java, Spring Boot, REST API, Relational database, Cloud platform, AWS, Azure, Docker, Kubernetes, GitHub, AI
... exchange APIs. Experience building or integrating MCP servers, or using AI tooling to automate software engineering and developer workflows. Familiarity with monitoring, observability, and network analysis tools, such as Corvil, Geneos, and PCAP analysis. Other Languages English: B2 Upper Intermediate Seniority Senior []
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