Senior Full Stack Engineer

To be considered for this role, you must be located and have work experience in Germany. Location: Berlin-Mitte, Germany Work Policy: Hybrid (up to 2 days home office); fully remote negotiable for outstanding candidates Work Experience: Minimum 6 years of experience Language Requirement: English C1 Employment Type: Full-time Technical Skills Required: Full Stack Development, React.JS, TypeScript, CI/CD, Git, React Native Industry: HealthTech/Mental Health Software 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 End-to-End Features: Take complete ownership of features from conception to deployment, making architectural decisions that impact both frontend and backend systems Real-time Features: Implement WebSocket-based real-time capabilities for seamless user experiences AI Integration: Work closely with their AI services, integrating cutting-edge models into their product workflows Make Independent Decisions: They trust you to make technical decisions without constant oversight - from choosing libraries to architecting new features Rapid Iteration: Ship features quickly while maintaining code quality in a fast-paced AI landscape where capabilities evolve weekly Requirements 6+ years professional software development experience, ideally with full product-lifecycle ownership Deep React.js knowledge: component lifecycle & architecture, Redux/Context/Zustand state-management, hooks (standard & custom), performance tuning, modern JS, HTML5, CSS3/SASS Typescript proficiency – writing fully type-safe, maintainable code Performance-obsessed front-end mindset: lazy loading, code-splitting, caching strategies, general web-app optimisation Solid grasp of browser APIs (localStorage, sessionStorage, IndexedDB) for offline-first experiences Electron expertise: main/renderer process architecture, native OS integration, auto-update flows, security best-practices for desktop apps Version-control mastery with Git: branching strategies, merge-conflict resolution, code-review workflows, CI/CD integration Strong problem-solving & debugging skills: use of Chrome DevTools / IDE debuggers, bottleneck analysis, comprehensive automated test suites Clear communicator & collaborator: well-structured technical documentation, constructive code-reviews, mentoring, cross-functional teamwork Autonomous mindset: self-directed, decisive, comfortable with ambiguity, writes clean well-tested code without micromanagement Adaptable & AI-ready: experience consuming AI/LLM APIs and designing reliable systems around probabilistic outputs; eagerness to explore emerging modelsReal-time/WebSocket implementation experience for seamless live collaboration features Nice-to-haves React Native & mobile: native module bridging, platform-specific code, performance tuning, App Store / Google Play releases Audio domain: speaker diarisation, audio-processing pipelines Healthcare/mental-health background or GDPR / security-compliance experience Comfortable with async-first work style & strong user-empathy for therapists' workflows Why Work WIth Them “Build AI tools that save therapists 80% of their admin time.” “Own architecture decisions in a high-trust, no-bureaucracy environment.” “Join a 9-person rocket-ship in Berlin with equity and real impact on mental health.” “Work with the latest GPT/LLM models and ship features used daily by doctors.”