Senior Fullstack Developer – Next.js, TypeScript
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Job Description
Senior Fullstack Entwickler developing and enhancing telemedicine applications for Infinos GmbH, a startup focused on effective weight management. Responsibilities include backend and frontend development with modern JavaScript technologies.
Responsibilities:
- Develop and enhance our internal dashboard (backend + frontend)
- Build and maintain automations that make our processes more efficient
- Work on external frontends — including our Expo mobile app and our Next.js website
- Perform code reviews and actively contribute to shaping our codebase in the monorepo
- Long-term: grow into a Tech Lead role
Requirements:
- At least 5 years of experience in software development
- Strong knowledge of TypeScript, Next.js and React
- Solid SQL skills (we use PostgreSQL with Prisma)
- Fluent German
- Willingness to actively use AI tools such as Cursor and Claude Code in your daily work
- Nice-to-haves: experience with Prisma or other ORMs, familiarity with tRPC, experience with Expo / React Native, Kubernetes knowledge, experience with AI SDKs (e.g. Vercel AI SDK) or integrating AI models into projects
Benefits:
- 100% remote — work from anywhere in the EU or worldwide
- Salary: €55,000–€75,000 depending on experience
- 30 days of vacation
- Flexible working hours and an async-first culture — we avoid unnecessary meetings
- MacBook Pro and additional hardware (monitors, etc.) provided if needed
- Regular team events and offsites
- Clear career path toward a Tech Lead position
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