Full-Stack Software Engineer
Summary
Builds and maintains a secure, model-agnostic AI platform in Node.js/React with PostgreSQL, integrating third-party AI services and shipping features end-to-end.
About the Role
We're an early-stage, Berlin-based startup building an enterprise-ready, model-agnostic AI platform that helps organizations safely and flexibly roll out AI at scale — from everyday employee chat interactions to complex automations and custom agents. Our platform is used by companies across Europe and emphasizes security, compliance, and flexible deployment (cloud or on-premise).
We're looking for a Full-Stack Software Engineer to join us on-site in Berlin. You'll have substantial ownership from day one, shaping product features end-to-end and contributing directly to architecture decisions in a fast-moving environment. Visa sponsorship is available.
What You'll Do
Design and implement robust backend systems and APIs to power our AI platform.
Build end-to-end solutions spanning backend (Node.js), database layers, and frontend integration.
Develop and optimize database schemas, queries, and data models for performance and scalability.
Implement API endpoints and integrate with third-party services and AI providers.
Collaborate on technical architecture decisions and system design alongside the broader engineering team.
Maintain and optimize the codebase for performance, reliability, and long-term maintainability.
Participate in rotating Support Engineer duties, where engineers regularly shift focus to support customers and the customer success team — keeping the whole team close to real user needs.
What We're Looking For
Required:
3+ years of full-stack web development experience.
Strong hands-on experience with Node.js, React / Next.js, and TypeScript.
Proficiency in PostgreSQL and SQL — data modeling, querying, and query optimization.
Proficiency with Tailwind CSS for frontend styling.
Experience owning features end-to-end, from conception through production deployment.
Experience building AI-powered features or integrating AI/ML services into applications.
Experience designing robust APIs and integrating with third-party services and AI providers.
Ability and willingness to contribute to technical architecture and system design discussions.
Strong CS fundamentals.
Strong collaboration and communication skills across product and cross-functional teams.
Willingness to work on-site in Berlin, Germany.
Nice to Have:
Background in enterprise SaaS or B2B productivity tooling.
Familiarity with compliance, security, or data governance requirements in enterprise environments.
Compensation & Benefits
Salary: €66,000 – €120,000 per year, depending on experience.
Visa sponsorship available for eligible candidates.
Meaningful equity and ownership in a fast-growing early-stage company.
High-impact role with direct influence on product and engineering direction.
Location
This is a full-time, on-site role based in Berlin, Germany. We are not able to accommodate fully remote arrangements for this position. Visa sponsorship is available.