Lead Machine Learning Engineer

Company: Chaptr.
Apply for the Lead Machine Learning Engineer
Location: London
Job Description:

This is an exciting opportunity to join one of the UK’s most established applied AI businesses, building responsible AI for over a decade.

They started out research-focused and have since delivered real-world impact for 350+ organisations, with AI safety at the core of everything they do. They’re industry agnostic but currently solving lots of problems in financial services, with projects often being long-term, bespoke builds.

They’re hiring a Lead ML Engineer to be the technical authority on ML engineering across the business, setting the standard for how they design, build and scale AI systems, while leading and mentoring a team of engineers.

It’s a great opportunity for someone who wants to shape how AI gets built responsibly, not just how fast.

What they need from you

  • A track record of setting the technical direction on complex ML projects and owning the key architectural decisions
  • Experience taking models from concept through to production, at scale
  • Experience leading, mentoring and growing a team of engineers, including involvement in hiring
  • The ability to shape ambiguous, high-risk problems into clear roadmaps and deliver across multiple work streams
  • Confidence working directly with clients as a technical advisor, estimating large pieces of work and defending your rationale to senior stakeholders

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Posted: October 22nd, 2026