Middle Fullstack Engineer (Kotlin&React)

Czym będziesz się zajmować?

• 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)

• 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 min. B2 level, Polish at min. B1 level
• Work from the European Union region and a work permit are required

• Java
• Kotlin
• React
• JavaScript
• Microservices
• REST

• HTML/CSS
• JSON
• Komunikacja

• Angielski
• Polski

• 13.7k–18.7k PLN netto/m (B2B)
• 10.2k–14.1k PLN brutto/m (Umowa o pracę)
• B2B - Elastyczne godziny pracy (100%)
• Praca zdalna: Brak

Xebia is a global, award-winning, AI-first consulting, software engineering, and training company. We shape tomorrow with AI today—helping organizations turn AI strategy into production-ready solutions that drive real transformation, faster.

Xebia operates as a single global team, designed for speed, scale, and impact, bringing together deep human expertise and the power of AI in everything we deliver.

Our flexible delivery model combines client-facing teams in the US and Europe with nearshore capacity across Poland and Latin America, as well as a large-scale offshore hub in India working as a single, integrated network.

The result is a sophisticated hybrid model that combines local expertise with global reach. For our clients, this means faster time-to-value, easier access to highly specialized digital and AI talent, and the flexibility to scale solutions at the speed of business.

With round-the-clock delivery, built-in scalability, cultural alignment, and a strong focus on attracting and retaining the best global talent, we help global organizations build, scale, and innovate with confidence.