Senior Fullstack Developer (m/w/d) - Claude Code Expert (Remote or Hybrid)

LuniNora will operate an innovative online marketplace that monetizes life coaching and counseling in a new way. We are about to launch and are currently working on our technological solutions that make counseling accessible anytime, anywhere. We are creating a world in which everyone can find the right counseling easily, quickly, and fairly. If you love clean code, enjoy developing creative solutions and want to work on meaningful projects, then you've come to the right place. Tasks Support through launch and post launch phase, by: Finalizing the development of feature set for launch • Establishing best practices in team Converting the processes from development into operations modus Benchmarking IT infrastructure and technical roadmap Potential of extended involvement in the future Requirements You are highly experienced in AI based software development – preferably Claude Code. Your skillset - Backend • TypeScript (advanced level) • Firebase/GCP Ecosystem • Node.js/Express REST API Design - Deep understanding of HTTP, status codes, error handling OAuth2 JWT Authentication based on Firebase solution Skilled in implementing GitHub-based CI/CD pipelines for Firebase Functions across development, staging, and production environments. • Experience with o Twilio Integration o Stripe integration Nice to have – Backend Experience with Firebase Admin SDK v12+ (breaking changes from v10) Knowledge of webhook-driven architectures (Stripe, Twilio webhooks) CORS configuration and cross