Machine Learning Engineer

Tonic

Benefits

Unlimited PTO

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About the Role:

  • The models you build here are load-bearing, determining whether an agent is ready to ship.
  • The work spans evaluation, synthesis, and entity detection on messy production data.

What You'll Do:

  • Design and build systems for synthetic environments and agent training.
  • Build and maintain synthesis models for de-identification at scale.
  • Train and improve NER models for entity detection.

What You’ll Bring:

  • 8+ years building production ML systems with depth in LLMs, agents, or NER.
  • Hands-on experience training and shipping models to production.
  • Strong software engineering fundamentals and comfort with real-world data.

Tonic

Tonic builds the data infrastructure behind modern AI, generating synthetic environments for agent training and de-identifying enterprise data. Eight years in, the company works with frontier AI labs and hundreds of enterprises, with a culture focused on solving hard data problems and shipping.

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