Founding AI Engineer @ Embedded AI Efficiency Layer, Berlin

This is an Atlantic portfolio venture. About the Venture AI is being integrated into more products every month, and every interaction consumes tokens. As usage scales, costs add up quickly. The first race was adoption. The next is efficiency: inference costs increasingly determine what companies can afford to build and ship. We’re building the efficiency layer for production AI. Our systems make AI dramatically leaner, reducing token usage and lowering the cost of every interaction without compromising the quality standards that matter. Over time, we aim to improve both cost and quality, so companies can do more with AI rather than choose between better performance and a healthier bottom line. We closed our pre-seed in just three weeks and are now preparing our first customer pilots. The pace is high and the timelines are ambitious. We are aiming for something big, and that requires a lot of input from every member of our early team. About the Role You’ll join as our first AI engineer and work directly with the founders to build the core product from the ground up. You’ll own major areas of product development, help define our architecture and technical direction, and turn complex research and engineering problems into reliable production systems. This role requires someone who can think deeply about AI systems and write the code to build them. You’ll work across AI infrastructure, backend systems, evaluation and enterprise deployments, with substantial ownership over the technical decisions behind the product. What You’ll Do Research, invent and productionise systems for AI cost efficiency, context optimisation and token reduction. Build across context selection, compression, caching, model routing, tool-call reduction, retry control and output budgets. Develop APIs, an OpenAI-compatible gateway and integrations with model providers and enterprise AI applications. Create reproducible cost-quality evaluations, regression tests and quality gates. Own production relia