Company
SaaS
FoundingProductEngineer(LLM/Fullstack)
Neural analysis suggests this role is
optimal for Mid+ candidates.
“Founding Product Engineer (LLM / Fullstack). Skills: LLM integration, Fullstack development. Own features end-to-end. Design UX”
Industry & Context.
Relentless iteration
Work in person regularly
What They're Looking For.
Must Have
Fullstack TypeScript proficiency required, Ability to work with LLMs
Nice to Have
Prior experience in B2B SaaS, Prior experience in enterprise tooling, Prior experience in workflow automation, Exposure to procurement, Exposure to supply chain, Past founding experience, Past early-stage startup experience, Past hackathon experience
What You'll Do.
Own features end-to-end
Implement backend services
Perform prompt engineering
Iterate based on feedback
Design agent pipelines
Build agent pipelines
Translate user behaviour into experiences
Translate user feedback into experiences
Operate across full stack
How You'll Work.
Team & Collaboration
Small team
Full Job Description
ABOUT THE ROLE An early-stage B2B SaaS startup building an AI-native procurement intelligence platform is looking for a Founding Product Engineer. The company is replacing fragmented, manual procurement workflows at large industrial enterprises with autonomous AI agents that benchmark suppliers, analyse cost drivers, and surface negotiation leverage — turning strategic procurement into a true cognitive function. You will be one of the earliest engineers on the team, operating with significant scope and direct impact on the product. Enterprise customers are already asking for capabilities faster than the team can ship them — your work will directly shape what gets built and how quickly. WHAT YOU'LL DO - Own features end-to-end: from UX design and frontend implementation through backend services to prompt engineering and LLM integration. - Prototype rapidly and iterate based on direct feedback from high-value enterprise users. - Design and build sophisticated agent pipelines that feel invisible and intuitive to the end user. - Sit close to real users, translating their behaviour and feedback into product experiences that land. - Operate across the full stack — frontend, backend, and LLM workflows — wherever the problem takes you. - Work in fast cycles with serious scope alongside a small, high-conviction team in Berlin. WHAT WE'RE LOOKING FOR - Fullstack TypeScript — strong proficiency is required. - Demonstrable ability to work with LLMs: prompting, fine-tuning, and integrating them into real, production-grade products. Evidence through professional work, side projects, or hackathons is valued highly. - Strong product taste and creative instincts — you care deeply about what makes a user experience actually work. - High agency and outcome-driven mindset — you find a way rather than waiting for permission. - Comfort navigating ambiguity: fast prototyping, sharp instincts, and relentless iteration without a playbook. - Genuine excitement about working in person with a
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