Senior Full Stack Engineer
Summary
Build and scale an AI platform using React, TypeScript, and PostgreSQL, handling multi-tenant data sync, secure sandboxes, and millions of LLM calls monthly.
About the Role
We are a bootstrapped AI platform studio based in Munich, Germany, building an all-in-one AI platform that empowers teams across the SME sector to integrate AI into their everyday workflows. Our platform already serves a large and rapidly growing user base across hundreds of companies, and we're scaling fast. You'll join a small, product-focused engineering team where your architectural decisions will have real, immediate impact.
We're looking for a Senior Full Stack Engineer who thrives on complex infrastructure challenges, cares deeply about user experience, and wants to help shape engineering culture alongside a talented team.
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 fine-grained 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, enabling new systems to be connected in hours.
Collaborate on technical roadmaps and drive alignment on architectural decisions with the wider development team.
Debug production incidents, identify root causes, and implement durable fixes to maintain platform stability.
Mentor junior engineers and elevate the codebase through thorough, constructive code reviews.
Continuously improve development processes, code quality standards, and overall team performance.
What We're Looking For
Required:
7+ years of professional software engineering experience with React, TypeScript, PostgreSQL, and the surrounding ecosystem (Docker, CI/CD).
Proven experience designing, scaling, and maintaining complex software architectures for high-growth products.
Hands-on experience with tRPC (or an equivalent type-safe API communication framework), Kubernetes, and Docker.
Experience with PostgreSQL relational data modeling and query performance optimization.
Experience designing and implementing secure, multi-tenant sandbox environments.
Experience operating at scale: synchronizing large datasets, handling high volumes of LLM/API calls, and building secure multi-tenant systems.
Strong product ownership mindset with genuine attention to user experience and long-term product success.
A passion for mentoring engineers and actively shaping engineering standards and processes.
Willingness to work on-site in Munich, Germany (hybrid arrangement).
Nice to Have:
Prior experience working in AI platforms, LLM infrastructure, or similar AI/ML-adjacent products.
Background at an IT consulting, enterprise software, or B2B SaaS company.
Experience contributing to a fast-paced, small team environment where you've worn multiple hats.
Compensation & Benefits
Salary: €70,000 – €90,000 per year, depending on experience.
Hybrid work arrangement based in Munich, Germany.
A high-impact role in a close-knit, product-focused team at an early-stage company.
Please note: visa sponsorship is not available for this role. Candidates must already be authorised to work in Germany.
Location
This is a hybrid role based in Munich, Germany. Regular on-site presence is expected. Visa sponsorship is not available.