Senior Full Stack Engineer

About the Role

Join a product-focused engineering team at a bootstrapped AI platform company in Munich, building secure and scalable infrastructure that brings AI tools to the heart of the SME sector. As a Senior Full Stack Engineer, you will own complex architectural challenges and help scale a platform already used by thousands of teams toward its next major growth milestone. Your work will directly shape the reliability, security, and user experience of a product with real business impact.

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 UX.

• 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 to enable fast custom integrations with new systems.

• 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 colleagues 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 clear track record of full-stack work, including demonstrated frontend contributions.

• 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 systems: 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 operation.

• Genuine motivation to mentor engineers, conduct thorough code reviews, and shape engineering standards.

• Strong product ownership mindset with attention to UX and long-term product success.

• Comfortable learning quickly and thriving in a fast-paced, high-growth environment.

• Currently based in Munich.

Compensation & Benefits

Salary range: 70,000 EUR to 90,000 EUR annually. Visa sponsorship is not available for this role.

Location

Hybrid, based in Munich, Bavaria, Germany.