Android mobile developer Jobs in Darmstadt

At TechBiz Global, we are providing recruitment service to our TOP clients from our portfolio. We are currently seeking a Senior Full-Stack Developer to join one of our clients' teams. If you're looking for an exciting opportunity to grow in a innovative environment, this could be the perfect fit for you.

What you’ll do:
-Develop and maintain our cross-platform interfaces using React
-Refactor and modernize components to improve speed, usability and accessibility
-Use a diverse set of skills to improve and optimize the performance & design of our products & interfaces
-Collaborate closely with a small, agile team
-Take ownership of projects and features from concept to release
-Drive architecture and code quality (patterns, refactoring, maintainability)
-Be ready to contribute quickly after an fair onboarding period
-Improve performance & UX with measurable outcomes (Core Web Vitals, load times, responsiveness)

What we’re looking for:
-Several years of production experience
-Excellent TypeScript skills (clean types, refactor-safe code)
-Solid experience with React & React Native, especially hooks and modern component patterns
-Understanding of responsive design and accessible web development
-Knowledge of performance optimization, accessibility best practices, and (testing) tools such as Vitest, Playwright, Maestro
-Ability to work independently, communicate clearly, and deliver end-to-end

Know or be ready to learn:
-React Query (@tanstack/react-query): comfortable working with queries, mutations, caching, and existing API hooks
-Zustand: able to work confidently with global state in an existing codebase
-Electron: familiar with building/maintaining cross-platform desktop apps
-Native mobile development: experience with Kotlin and/or Swift