Senior Full Stack Engineer

ABOUT THE ROLE This is a senior engineering role on a product-focused team building a secure, scalable AI platform for the SME sector. You will own complex architectural challenges end-to-end, helping grow a platform that already serves a large and rapidly expanding user base across hundreds of companies. WHAT YOU'LL DO - Own the most complex architectural problems on the platform, including multi-terabyte data synchronization and secure sandbox infrastructure. - Architect, build, and ship high-quality full-stack features using React and TypeScript, with a focus on long-term scalability and UX. - Design and implement systems to synchronize and index large volumes of client data while enforcing strict permissions. - Build infrastructure to process millions of LLM calls per month with high reliability and security. - Implement scalable, secure code sandbox solutions capable of spawning thousands of sandboxes per day. - Create base infrastructure and tooling for fast custom integrations so new systems can be connected quickly. - Collaborate on technical roadmaps and align on architectural decisions with the broader development team. - Debug production incidents, identify root causes, and implement durable fixes to keep the platform stable. - Mentor junior engineers and raise the bar through constructive, thorough code reviews. - Continuously improve development processes, code quality standards, and overall team performance. WHAT WE'RE LOOKING FOR - 7+ years of professional software engineering experience with a strong full-stack background, including clearly demonstrated frontend work. - Production experience with React, TypeScript, PostgreSQL, Docker, and CI/CD pipelines. - Hands-on experience with tRPC, Kubernetes, and modern frontend tooling. - Proven ability to design, scale, and maintain complex software architectures for high-growth products. - Experience operating large-scale, reliable, and secure systems such as large dataset synchronization, high-volume API or LLM processing, or secure multi-tenant infrastructure. - End-to-end ownership of substantial initiatives from conception through delivery and ongoing operation. - Motivation and ability to mentor engineers, conduct thorough code reviews, and shape engineering standards. - Strong product ownership mindset with attention to user experience and long-term product success. - Currently based in Munich. COMPENSATION & BENEFITS Salary range: 70,000 to 90,000 EUR annually. Visa sponsorship is not available for this role. LOCATION Hybrid, based in Munich, Bavaria, Germany.