Founding Engineer / Product Engineer
About the Role
This is a founding-team engineering role at an early-stage B2B SaaS company building an AI-native intelligence layer for strategic procurement. You will own features end-to-end, from UI and backend services through to LLM prompt design, helping enterprise customers replace fragmented, manual processes with powerful AI agents. The work is high-stakes, highly visible, and shapes the product direction directly.
What You'll Do
Prototype and ship full-stack product features rapidly across frontend, backend, and LLM integration layers.
Design and refine agent pipelines and prompt workflows that make complex AI behavior feel effortless to end users.
Sit close to enterprise customers, translating feedback and real-world usage into iterated, production-grade experiences.
Reason about system architecture and make pragmatic decisions on when to build, tune, or orchestrate AI components.
Use AI coding tools and agents as a natural part of your development workflow to accelerate delivery.
Contribute across the stack wherever the problem demands, without waiting to be pointed in a direction.
What We're Looking For
Strong proficiency in full-stack TypeScript; Python experience is a plus.
Demonstrated ability to build with LLMs: prompting, tuning, and integrating them into real, shipped products, whether through professional work, side projects, or hackathons.
Clear evidence of exceptional engineering ability or trajectory, such as impressive shipped products, rapid career progression, notable open-source contributions, or hackathon wins.
Product instincts and creative drive to know what makes an AI-powered experience genuinely good for users.
High agency and entrepreneurial mindset; you find a way rather than waiting for permission.
Experience shipping product in a startup or similarly fast-moving environment.
Comfort working across frontend, backend services, and prompt workflows with full feature ownership.
Reliable, responsive communication and consistent follow-through on commitments.
Based in Berlin and willing to work in person or hybrid with the team.
Compensation & Benefits
Salary: 90,000 to 140,000 EUR annually
Visa sponsorship: Not available
Location
Hybrid, based in Berlin, Germany. In-person collaboration with the team is an important part of this role.