AI Engineer (Early-Stage Commerce Software)

A very young startup building software for online merchants needs one of its first engineers to take charge of the AI portion of what the company sells. The job is hands-on production work for paying customers rather than research, and early architectural calls will shape the company for years.

Scope

Run complete AI systems from prompting and retrieval through tool use, agent orchestration and selective fine-tuning

Create evaluation tooling ahead of each feature so model changes are measured before they reach customers

Bring latency and spend down to levels that hold up under real merchant volume

Examine fuzzy product problems and judge whether the root cause lies in the model, the data or the interface

Release to production every week and watch how changes behave in the real world

Ideal background

Two to four years building production LLM systems, with an AI/ML product already in the hands of real users

Strong hands-on Python for AI services; the stack also includes TypeScript, React and Node

Experience building evaluation systems that caught regressions

Time at a fast-growing, venture-backed startup or a company known for a rigorous engineering bar

Computer science degree

Nice to have: commerce or marketplace exposure, fine-tuning experience, public open-source work

On-site in the San Francisco Bay Area. Visa sponsorship is not available.