We are looking for a Senior Full Stack Developer with a strong frontend focus to join a fast-growing product company building AI-powered solutions for small and medium-sized businesses.
You will work in a senior, highly autonomous engineering team, taking ownership of features from concept to production while helping shape both the product experience and technical direction. Responsibilities * Own and deliver complex features across the entire application stack. * Lead frontend development initiatives and continuously improve user experience, usability, and visual quality. * Design and implement scalable, maintainable, and production-ready React applications. * Collaborate with product and engineering stakeholders to define technical solutions and architecture. * Extend and maintain Python-based backend services using FastAPI and Django. * Analyze user flows, edge cases, and failure scenarios before implementation. * Contribute to architectural discussions, technical decisions, and code quality improvements. * Utilize AI-assisted development tools as a core part of the engineering workflow. * Take full ownership of features throughout their lifecycle, from planning to deployment.
Requirements * Proven experience delivering complex software projects in a professional environment. * Strong expertise in React and modern frontend development practices. * Experience building accessible, responsive, and high-quality user interfaces. * Solid full-stack development experience with Python-based backends. * Hands-on experience with FastAPI and/or Django. * Strong understanding of software architecture, system design, and engineering best practices. * Experience working in startup or fast-paced product environments. * Ability to work independently and take ownership of technical decisions. * Practical experience using AI-powered development tools such as Cursor, Claude Code, GitHub Copilot, Codex, or similar. * Strong English communication skills.
Will Be a Plus * Experience building AI-native products or agentic AI systems. * Familiarity with LLM-based applications and AI workflows. * Experience working with PostgreSQL and AWS. * Background in B2B SaaS or fintech products. * Knowledge of German accounting systems and standards. * German language skills.
What We Offer * Competitive compensation package. * Health insurance coverage. * Paid vacation and public holidays. * Flexible work environment with a high level of autonomy. * Access to modern AI-powered development tools. * Opportunity to influence product and technical decisions.
