Full-Stack Software Engineer

ABOUT THE ROLE

A fast-growing, seed-stage enterprise AI platform company based in Berlin is looking for a Full-Stack Software Engineer to join their small, high-impact engineering team. Founded in 2023, the company builds an all-in-one platform that enables organisations to securely adopt and integrate generative AI — including AI chat, workflows, and custom agents — across their entire operations.

This is a full-time, on-site role in Berlin with substantial ownership from day one. You'll shape product features, drive architecture decisions, and ship quickly in a fast-paced early-stage environment. Visa sponsorship is available.

WHAT YOU'LL DO

• Design and implement robust backend systems and APIs powering a scalable 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/ML providers.

• Collaborate with the team on technical architecture decisions and system design.

• Maintain and optimize the codebase for performance, reliability, and maintainability.

• Participate in rotating Support Engineer shifts, in which engineers periodically focus on supporting customers and the customer success team.

WHAT WE'RE LOOKING FOR

Required

• 3+ years of full-stack web development experience.

• Strong proficiency with Node.js, React / Next.js, and TypeScript.

• Solid command of PostgreSQL and SQL — data modeling, querying, and optimization.

• Experience with Tailwind CSS for frontend styling and implementation.

• Proven track record 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.

• Strong CS fundamentals and communication skills across product and cross-functional teams.

• Willingness to participate in periodic support engineer rotations.

• Ability to work on-site in Berlin, Germany (visa sponsorship available).

COMPENSATION & BENEFITS

• Salary: €66,000 – €120,000 per year, depending on experience.

• Visa sponsorship available for eligible candidates.

• High degree of ownership and direct impact at an early-stage company.

• Opportunity to contribute to foundational architecture decisions as the team scales.

LOCATION

This is a fully on-site role based in Berlin, Germany. Visa sponsorship is available for the right candidate.