Founding Engineer, Agent and Data Systems
Tenor, San Francisco, California
About the job
About Tenor
Tenor (YC S26) is building the full-stack infrastructure for AI-native businesses, redefining how companies are built, launched, and scaled in the 21st century. We're a four-person, seed-stage startup hiring our fifth teammate. Our team brings together engineering, ML, and product experience from Tesla, Waymo, Amazon, UC Berkeley, and Stanford, including research published at ICML.
The role
We are hiring a founding engineer with end-to-end ownership across agent, data, backend, and product systems. You will engineer harnesses across our agent systems, including tool-use loops, evidence-driven learning systems, replay and simulation infrastructure, evaluation and promotion gates, and the backend and full-stack product systems that hold everything together.
You will work directly with the founders to turn prototypes into reliable product infrastructure and shape both the technical architecture and the product.
What you will have ownership in
- Design and operate reliable agent harnesses, execution systems, replay and simulation infrastructure, and evaluation and promotion gates.