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 an established platform to its next stage of scale. Your work will directly shape the systems and standards that the broader engineering team builds on. What You'll Do

• Own the most complex architectural problems across 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 user experience.
• Design and implement systems to synchronize and index large volumes of client data while enforcing 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 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 or more 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 track record designing, scaling, and maintaining complex software architectures for high-growth products.
• Experience operating at scale: large dataset synchronization, high-volume API or LLM processing, and secure multi-tenant infrastructure.
• Demonstrated end-to-end ownership of substantial initiatives from conception through delivery and operation.
• A genuine interest in mentoring engineers and actively shaping engineering standards.
• Strong product ownership mindset with attention to user experience and long-term product success.
• Comfortable working at pace in a high-growth environment. Compensation & Benefits Salary range: 70,000 to 90,000 EUR annually . Visa sponsorship is not available for this role. Location Hybrid role based in Munich, Bavaria, Germany . Candidates must be located in Munich.