> Markdown version of [/jobs/ext/1371453-senior-full-stack-developer](https://www.wearedevelopers.com/jobs/ext/1371453-senior-full-stack-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Full Stack Developer - **Company:** Mirantus Health GmbH - **Location:** Berlin, Germany - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Code Review, Continuous Integration, Node.Js, TypeScript, Network Routers, ReactJS, Spring-boot, Backend, Kotlin, Front End Software Development, NestJS - **Published:** July 22, 2026 - **Apply:** https://www.adzuna.de/details/5802982786 ## About the Role * Solid professional experience as a full stack developer (5+ years) * Strong command of TypeScript and modern React * Hands-on experience with TanStack Router and TanStack Query - or the proven ability to pick them up fast * Working knowledge of Node.js, ideally with NestJS * A good grasp of APIs, state management, and component-driven development * A genuine focus on quality: testing, performance, and accessibility * Clear communication and a collaborative mindset * Nice to have: Spring Boot (Kotlin) for our legacy stack, experience in healthcare or another regulated industry, and familiarity with CI/CD ## Description We're a young, well-funded health-tech startup on a mission to make quality care reachable for everyone. By enabling doctors to deliver distributed healthcare solutions, we bring treatment to patients in remote and underserved areas - and we're already operational, serving hundreds of patients every month. This is your opportunity to join at an early stage, have a direct impact on patient health, and help shape our tech product from the ground up. As a Full Stack Developer with a frontend focus, you'll spend most of your time crafting fast, accessible, and intuitive interfaces while contributing across the stack, working hand in hand with product and design. Tasks * Build and maintain responsive, high-performance frontend applications with React * Develop and integrate APIs in our Node.js (NestJS) backend * Turn design concepts into polished, accessible user experiences * Write clean, testable, well-documented code and help raise the bar on quality * Take part in code reviews, architecture decisions, and the continuous evolution of our engineering practices * Help maintain and gradually modernize legacy services ## Related Videos - [Nest.js - TypeScript in the backend can also be clean](https://www.wearedevelopers.com/videos/1033-nest-js-typescript-in-the-backend-can-also-be-clean) - [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse) - [Stop using Node.js like in 2020! What changed and what you can do today with Node.js](https://www.wearedevelopers.com/videos/100011-stop-using-node-js-like-in-2020-what-changed-and-what-you-can-do-today-with-node-js) - [Build and Deploy a Fullstack App with Open Source Tooling](https://www.wearedevelopers.com/videos/775-build-and-deploy-a-fullstack-app-with-open-source-tooling) - [Next, Nest, Nuxt… Nust?](https://www.wearedevelopers.com/videos/421-next-nest-nuxt-nust) - [Stop Using Node.js Like It’s 2020! - Alfonso Graziano](https://www.wearedevelopers.com/videos/1863-stop-using-node-js-like-it-s-2020-alfonso-graziano) ## Related Articles - [The Biggest German Tech Companies](https://www.wearedevelopers.com/magazine/424-the-biggest-german-tech-companies) - [Fullstack developer salary in Germany [2023]](https://www.wearedevelopers.com/magazine/197-fullstack-developer-salary-in-germany-2023) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Frontend Developer Salary in Germany [2023]](https://www.wearedevelopers.com/magazine/195-frontend-developer-salary-in-germany-2023) - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)