Middle Fullstack Engineer (Kotlin&React)

About this role

<p class="x_x_MsoNormal" data-olk-copy-source="MessageBody">Xebia is a global AI-first, digital transformation, and engineering partner.<span lang="EN-US">&nbsp;With over 25 years of experience and a team of 5,000 professionals across 16 countries, we help organizations design and build scalable products, platforms, and data-driven solutions.</span>&nbsp;</p> <p class="x_x_MsoNormal"><span lang="EN-US">We specialize in Artificial Intelligence, Data and Cloud, Intelligent Automation, and Digital Products, combining deep technical expertise with a strong focus on engineering excellence and a people-first culture.&nbsp;</span>&nbsp;</p> <p class="x_x_MsoNormal"><span lang="EN-US">In the CEE region, we’re a team of nearly 1,000 experts delivering modern applications, data platforms, and AI solutions for clients such as McLaren, Aviva, Deloitte, Spotify, Disney, ING, UPS, Tesco, Truecaller, AllSaints, Volotea, Schmitz Cargobull, Allegro, InPost, and many, many more. We work with leading technologies including AWS, Azure, GCP, Databricks, and Snowflake, and combine strong engineering culture with a consulting mindset and a continuous focus on growth and knowledge sharing.</span>&nbsp;</p> <p><strong><br><br></strong></p> <h2><strong>You will be:</strong></h2> <ul> <li>developing and enhancing microservices using Java and Kotlin,</li> <li>designing, developing, and modifying REST APIs and backend mocks,</li> <li>building web components, purchase flows, and registration processes using React,</li> <li>working across both backend and frontend areas, adapting to changing project needs,</li> <li>integrating solutions with external business partners and supporting partner-facing functionalities,</li> <li>collaborating with the team to deliver new features quickly and efficiently,</li> <li>contributing to the continuous improvement of the product and technical solutions.</li> </ul> <p>&nbsp;</p> <h2 data-pm-slice="1 1 []"><strong>Your profile:</strong></h2> <ul> <li><span data-olk-copy-source="MessageBody">3+ years of commercial experience in software development,</span></li> <li><span data-olk-copy-source="MessageBody">good knowledge of <strong>Java and Kotlin</strong>,</span></li> <li><span data-olk-copy-source="MessageBody">practical experience working with microservice architecture,</span></li> <li><span data-olk-copy-source="MessageBody">hands-on experience with <strong>React </strong>and modern JavaScript,</span></li> <li><span data-olk-copy-source="MessageBody">good knowledge of HTML and CSS,</span></li> <li><span data-olk-copy-source="MessageBody">solid understanding of REST API design and consumption,</span></li> <li><span data-olk-copy-source="MessageBody">practical experience working with JSON,</span></li> <li><span data-olk-copy-source="MessageBody">willingness to work across both backend and frontend development,</span></li> <li><span data-olk-copy-source="MessageBody">practical experience using AI-powered assistants (e.g. Claude Code, GitHub Copilot, Cursor) to improve productivity, quality, or decision-making in software delivery,</span></li> <li><span data-olk-copy-source="MessageBody">ability to quickly switch between different technological areas and tasks,</span></li> <li><span data-olk-copy-source="MessageBody">good communication and collaboration skills,</span></li> <li><span data-olk-copy-source="MessageBody">English at min. B2 level,</span></li> <li><span data-olk-copy-source="MessageBody">Polish at min. B1 level,</span></li> <li><strong>openness to occasional visits to the Warsaw office (1-2 days per quarter).</strong></li> <li> <p><strong>Work from the European Union region and a work permit are required.</strong></p> </li> </ul> <h2><strong>Nice to have:</strong></h2> <ul> <li><span data-olk-copy-source="MessageBody">experience with Docker and CI/CD processes, particularly GitLab CI,</span></li> <li><span data-olk-copy-source="MessageBody">experience working with cloud environments,</span></li> <li><span data-olk-copy-source="MessageBody">understanding of UX/UI principles,</span></li> <li><span data-olk-copy-source="MessageBody">familiarity with Responsive Web Design (RWD),</span></li> <li><span data-olk-copy-source="MessageBody">experience integrating with external partner systems,</span></li> <li><span data-olk-copy-source="MessageBody">experience applying GenAI in a more structured way within the SDLC, including defined workflows, prompt patterns, or tool integrations embedded into daily work,</span></li> <li><span data-olk-copy-source="MessageBody">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.</span></li> </ul> <p>&nbsp;</p> <p>&nbsp;</p> <h2><strong>Recruitment Process:</strong></h2> <p><strong>CV</strong> review –<strong> HR</strong> call – <strong>Technical </strong>Interview – <strong>Client </strong>Interview – <strong>Decision</strong></p> <p>&nbsp;</p>