Our offer for you As a Senior UI Engineer (f/d/m), you will play a pivotal role in shaping and enhancing the user experience of our AI-driven legal solutions. Our B2B solutions are helping especially professionals, who work in law research and legal advising. You will work closely with our design, engineering, and product teams to develop and optimize intuitive, responsive, and scalable UI components, bringing innovation and efficiency to the forefront of our product offerings. YOUR TEAM You will join our Tech Team of around 14 people, including Frontend Engineers led by Aurélien, ,UI Designer, AI Engineers as well as Backend and DevOps Engineers. YOUR HIRING MANAGER Aurélien leads the Frontend Engineering Team. With extensive experience in software development and a hands-on, pragmatic leadership style, Aurélien values independent thinking and efficient solutions that drive real-world impact. OUR BENEFITS Working hours: Flexible working hours Vacation: 26 days December 24th & 31st off Remote: 100% remote work possible (given a German residence), other countries upon request Discounts: e.g. Urban Sports Club Membership Equipment: Laptop (Lenovo or Mac), second screen, keyboard etc. Your responsibilities Develop UI Components: Using React, TypeScript, Office.js, hooks, and responsive design Performance Optimization: Implement code splitting, lazy loading, and caching techniques Design Implementation: Pixel-perfect execution from Figma designs with Tailwind and animations Backend Integration: Connect APIs using RESTful services, integrating WASM solutions for encrypted communication Testing & Debugging: Write tests using Vitest ensuring clean, functional code End-to-End Responsibility: From design handover to backend integration, ensuring APIs fetch the right data Tech Stack Optimization : Streamline tooling, optimizing the codebase for better scalability & clean code best practices Our Tech Stack Programming: React, Native JavaScript, TypeScript, Node.js & Office.js Testing: e.g. VItest Ticket System: Atlassian JIRA Repository: Github CI/CD System: GitHub Actions Documentation: Confluence Communication: Slack Office Application: MS365 About you Working Permission: Germany Language: English (fluent) F ull development lifecycle : Worked across the full development lifecycle, from design to backend connection with React, TypeScript, Hooks, and Context API, HTML5, CSS3, Web Components Backend integration experience: Node.js, API design, authentication mechanisms (JWT, OAuth & Keycloak ) Delivery: Delivered results in evolving fast-paced startup environmentt T echnical Debt: Optimized technical debt and implemented best coding practices in previous roles Optional: Familiarity with tools such as Webpack, Docker, Git, and CI/CD pipelines as well as Office.js Sounds good? Then, we look forward to receiving your CV via our online application form. About us The AI Startup Xayn develops Noxtua, Europe's leading sovereign Legal AI. The legally compliant and competent AI helps legal professionals to research legal issues and review, and draft legal documents. The GDPR-compliant Legal AI meets the high professional and data protection requirements for lawyers (§ 203 Penal Code, § 43e Federal Lawyers' Act) and is certified according to ISO 27001, 9001, 27018, 27017, 42001, and BSI C5. The product version Beck-Noxtua is based on the exclusive data of Germany’s leading legal publisher C.H.Beck and Germany’s largest business law firm CMS. Emerging from a 2017 research project by Dr. Leif-Nissen Lundbæk and Professor Dr. Michael Huth at Oxford University and Imperial College London, the Berlin-based Legal-Tech company, formerly known as Xayn, boasts extensive experience in developing highly efficient GDPR-compliant AI solutions. Strategic partners, including Germany's leading legal publisher C.H.Beck, the High-Performance Computing specialist Northern Data, Germany's largest business law firm and co-initiator of the Legal AI Noxtua CMS, as well as the world's largest law firm Dentons, have invested a total of € 80.7 million in the German startup as part of its Series B funding round. We explicitly encourage women to apply, as they are currently underrepresented. Our goal is to build a diverse and inclusive work environment that values different perspectives. Of course, we welcome applications from all qualified individuals – regardless of gender, ethnic origin, religion, disability, age, or sexual identity.