Full Stack Engineer

Location: Berlin, Germany (Hybrid) Work Policy: : Hybrid; fully remote possible for exceptional candidates Work Experience: +5 years experience Language Requirement: English B2 Employment Type: Full-time Technical Skills Required: Full Stack Development, TypeScript, React Native, LLMs, API design, Electron Industry: HealthTech/Software-as-a-Service (SaaS) Positions Available: 1 Company Mission They relieve psychotherapists of administrative burdens through intelligent AI assistance, giving them more time for what matters most: working with patients and providing high-quality therapy. Core Values Empathy: They develop for people who help others. That's why they listen and build solutions that make everyday practice noticeably easier instead of complicating it. Trust: Trust is their foundation. They work uncompromisingly securely, transparently, and reliably—both with their data and within their team. Quality: They deliver professional precision instead of gimmicks. Their AI has to stand up to everyday therapeutic use, which is why they focus on technical excellence with real added value. Tasks Own features end to end, by yourself – from the problem through architecture, implementation, release and the fixes that follow, frontend, backend and everything in between; nobody hands you a finished spec and nobody finishes your work for you Make the technical decisions, from choosing a library to architecting a new feature, and defend the decision when it is questioned Integrate AI into the product, working with our AI services to build dependable systems around probabilistic output Build real-time features with WebSocket-based live capabilities where latency is visible to the user Ship on desktop and mobile, working on our Electron app (main and renderer architecture, native OS integration, auto-update, offline-first behaviour) and React Native app Iterate fast with continuous deployment and short cycles, ensuring design controls and traceable test evidence on the surfaces that fall under EU MDR Take initiative creating tickets and implementing them end-to-end Requirements Genuinely full-stack. Strong React and TypeScript on the front end, and real backend work behind it: API design, data modelling, relational databases, async and background processing. You have built and operated both halves of a feature, not consumed an API someone else wrote You have shipped software that real users depend on, and you supported it afterwards. You know what breaks in production and why Debugging strength across the whole stack. When something is wrong you find it rather than guess at it Real autonomy. You identify what needs doing, decide, and ship. No standup is what keeps you moving Empathy for the people who use what you build. Our users are therapists under time pressure, and you are curious enough about their work to build something they actually love Clear written English and comfort working async React, TypeScript, API design Data modelling Relational databases Async processing Debugging LLM application engineering: evaluation, prompt pipelines, agent tooling, latency and cost optimisation Electron or another desktop platform, including distribution, code signing and auto-update React Native, and experience publishing to the App Store and Play Store Audio processing, transcription or other real-time media Healthcare, GDPR-heavy or other regulated environments German. Our users, their documents and our support conversations are in German Excellence and Drive are required. But typically > 5 years Strong autonomy, very ambitious and driven, curious about the domain Benefits High degree of creative freedom: End-to-end responsibility for features and architectural decisions in direct collaboration with the CTO and founders. Broad technical scope ranging from React/TypeScript to Electron & React Native to LLM integration with real-time WebSocket functionality. Practical AI engineering tasks in production systems rather than demo p