Middle Fullstack Engineer (Kotlin&React)

Xebia is a global, award-winning, AI-first consulting, software engineering, and training company. They help organizations turn AI strategy into production-ready solutions that drive transformation. Xebia operates globally with teams in the US, Europe, Poland, Latin America, and India, combining local expertise and global reach to provide specialized digital and AI talent.

• 3+ years of commercial experience in software development
• Good knowledge of Java and Kotlin
• Practical experience working with microservice architecture
• Hands-on experience with React and modern JavaScript
• Good knowledge of HTML and CSS
• Solid understanding of REST API design and consumption
• Practical experience working with JSON
• Practical experience using AI-powered assistants (e.g. Claude Code, GitHub Copilot, Cursor)
• Good communication and collaboration skills
• English at minimum B2 level, Polish at minimum B1 level
• Work from the European Union region and a work permit are required

Nice to have:

• Knowledge of HTML/CSS
• Knowledge of JSON
• Communication skills

• Developing and enhancing microservices using Java and Kotlin
• Designing, developing, and modifying REST APIs and backend mocks
• Building web components, purchase flows, and registration processes using React
• Working across both backend and frontend areas, adapting to changing project needs
• Integrating solutions with external business partners and supporting partner-facing functionalities
• Collaborating with the team to deliver new features quickly and efficiently
• Contributing to the continuous improvement of the product and technical solutions
• Occasional visits to the Warsaw office (1-2 days per quarter)

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