Middle Java Developer

Xebia is a global tech company with origins in two Polish companies, PGS Software and GetInData, specializing in cloud, data, and software solutions. The company has over 1,000 experts working on projects across fintech, e-commerce, aviation, logistics, media, and fashion sectors. Xebia partners with Databricks, dbt, Snowflake, Azure, GCP, and AWS, and was the first AWS Premier Partner in Poland.

• 3+ years of professional experience in backend development
• Very good knowledge of Kotlin and Spring Boot
• Hands-on experience with microservices architecture
• Practical experience working with NoSQL databases, especially MongoDB
• Experience building and maintaining backend systems and APIs
• Understanding of system design and scalable architecture principles
• Experience working with high-performance and high-scale systems
• Strong analytical thinking and problem-solving skills
• Ability to collaborate effectively with stakeholders and engineering teams
• Good communication skills in English (B2) and Polish (C1)
• Practical experience using AI-powered assistants (e.g. Claude Code, GitHub Copilot, Cursor) to improve productivity, quality, or decision-making in software delivery

Nice to have:

• Experience applying GenAI in a structured way within the SDLC, including defined workflows, prompt patterns, or tool integrations embedded into daily work
• Interest in and familiarity with emerging AI-driven practices (e.g. agent-based workflows, automation patterns, AI-augmented development), with a willingness to explore and experiment beyond standard approaches

• Developing and maintaining backend systems for advertising and e-commerce platforms
• Building low-latency, high-performance services processing large volumes of data
• Developing scalable microservices and APIs using Kotlin and Spring Boot
• Working on real-time event processing and advertising targeting mechanisms
• Contributing to architecture design and system scalability improvements
• Collaborating with stakeholders and supporting engineering best practices, including code reviews and code quality standards
• Participating in technical readiness/on-call support for production incidents a few days per month

Work from the European Union region and a work permit are required.