Senior Full Stack Engineer gesucht in Berlin

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, * "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."

• 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