Middle Fullstack Engineer (Kotlin/React)

Xebia is a global AI-first, digital transformation, and engineering partner with over 25 years of experience and a team of 5,000 professionals across 16 countries. They specialize in Artificial Intelligence, Data and Cloud, Intelligent Automation, and Digital Products. In the CEE region, Xebia has nearly 1,000 experts delivering modern applications, data platforms, and AI solutions for well-known clients such as McLaren, Aviva, Deloitte, Spotify, Disney, ING, UPS, Tesco, Truecaller, AllSaints, Volotea, Schmitz Cargobull, Allegro, and InPost. The company works with leading technologies including AWS, Azure, GCP, Databricks, and Snowflake while maintaining a strong engineering culture with a consulting mindset focused on growth and knowledge sharing.

• 3+ years of commercial software development experience
• Good knowledge of Java and Kotlin
• Practical experience 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
• Willingness to work across both backend and frontend development
• Practical experience using AI-powered assistants (e.g., Claude Code, GitHub Copilot, Cursor) to improve productivity, quality, or decision-making in software delivery
• Ability to quickly switch between different technological areas and tasks
• Good communication and collaboration skills
• English language proficiency at minimum B2 level
• Polish language proficiency at minimum B1 level
• Openness to occasional visits to the Warsaw office (1-2 days per quarter)
• Work from the European Union region and a work permit are required

Nice to have:

• Experience with Docker and CI/CD processes, particularly GitLab CI
• Experience working with cloud environments
• Understanding of UX/UI principles
• Familiarity with Responsive Web Design (RWD)
• Experience integrating with external partner systems
• Experience applying Generative AI in a structured way within the SDLC, including workflows, prompt patterns, or tool integrations
• 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

• 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

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

The administrator of Personal Data for recruitment processes is Xebia Sp. z o.o. located in Wrocław, Poland. Personal Data is processed according to GDPR principles. Applicants may withdraw consent for processing at any time. Contact for data protection matters is Xebia sp. z o.o., ul. Sucha 3, 50-086 Wrocław, or [email protected].