Senior AI Research Engineer

About the role

We're looking for Senior AI Research Engineer to characterize, measure, and advance the capabilities of our coding agents. You will turn ambiguous notions of "agent quality" into clear, defensible metrics that the team, leadership, and the field can rely on, and you will use those metrics to drive both incremental wins and moonshots in agent performance.

What you'll do

• Design and ship evaluations across reasoning, planning, tool use, code correctness, long-horizon execution, security, and agent reliability: define the metric
• Drive step-function gains: take on the ambitious bets that meaningfully advance the state of the art, the 10-point leaps on hard capabilities, not incremental polish
• Pick the problems where the upside is large and the path is uncertain
• Run training and post-training experiments, including supervised fine-tuning, RLHF/RLAIF, DPO, distillation, reward modeling, prompt optimization
• Own end-to-end: carry work from hypothesis through experiment design, execution, analysis, decision, rollout, and post-launch measurement

What you need

• 5–8 yrs of experience
• Research
• Any graduate

Good to have

• Python
• Go