Senior Full-Stack Engineer developing core backend and frontend systems at a growing startup. Collaborating closely with the CTO and working in a hybrid environment in Frankfurt.
Responsibilities
Backend & APIs (Django): Build and continuously evolve backend systems and APIs in Django
Own architecture decisions: scalability, reliability, maintainability
Frontend (React): Implement features in the React frontend (UI, state, integration)
Improve performance and developer experience
Design clean interfaces between frontend and backend
Implement and improve CI/CD pipelines and deployment workflows
Apply clean code, design patterns, and system design consistently
Refactor large parts of the codebase to increase long-term maintainability — using modern tools like Claude
Systematically expand testing/QA (unit, integration, end-to-end — depending on the area)
Actively use and develop AI-assisted development workflows (iterate faster, improve quality, automate)
Requirements
Strong experience in full-stack development. Both backend and frontend are important
Excellent skills in React (component architecture, state management, performance, clean patterns)
Excellent backend skills (Django, APIs, data modeling)
Solid understanding of architecture, design patterns, and clean-code principles
Hands-on experience with CI/CD (build pipelines, tests, deployments, release processes)
Strong testing and QA practices
Familiarity with modern toolchains and workflows — including AI-assisted development
Bonus: Exposure to Go and/or Rust (or strong curiosity), as we may expand parts of the system in those languages
Benefits
Hybrid: Frankfurt office + remote days
High autonomy & ownership: You influence decisions and build end-to-end
Direct collaboration with the CTO: short feedback loops, fast decisions, real technical leadership
Your ideas matter: small team, big impact, rapid iteration
Retreats / workations: We meet regularly in inspiring locations
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