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Founding Applied AI Engineer

Make HeyDeer’s agents measurably better engineers, starting with code review.

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What you’ll work on

  • Own the evaluations that define a good review: datasets from public, synthetic or explicitly authorised examples, never customer content, scored on precision, recall, latency and cost.
  • Improve agents wherever the evaluations point: repository context, review and verification workflows, prompts and tools.
  • Post-train models with fine-tuning and reinforcement learning, and ship one only when evaluations show it beats the current setup.
  • Harden agents that run on untrusted repositories against prompt injection and tool misuse.
  • Carry what works beyond review, to fixes and the routine work that keeps software healthy.

What you’ll bring

  • High agency: you find where quality falls short, decide how to fix it and ship the fix without waiting to be assigned.
  • A track record of improving models or agents against evaluations rather than demos. Post-training experience, such as supervised fine-tuning, preference optimisation or reinforcement learning, is a strong plus.
  • Strong engineering fundamentals: you read unfamiliar code quickly, reason about bugs and work comfortably in TypeScript or Python.

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