AI Data Scientist – Early-stage Start-up – FinTech – London

Company: Oliver Bernard
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AI / Data Science | Early-Stage FinTech | London | Up to £90k + Equity

Oliver Bernard have recently partnered with an early-stage London FinTech currently securing their pre-seed funding round, and they’re looking for an AI/Data Science hire to join right at the start of their growth journey.

This is a chance to join a small, high-trust team where you’ll have genuine ownership over how AI is built and deployed.

What you’ll be working on

You’ll own the extraction and matching layer, working with highly unstructured financial data.

You’ll be tackling problems around:

  • Confidence scoring & threshold calibration

They’re AI-native by design, viewing LLMs as infrastructure rather than a feature bolted onto an existing product.

What they’re looking for

  • 3+ years shipping applied ML/AI systems into production
  • Strong Python
  • Hands-on experience with LLMs in production
  • Background in FinTech, LegalTech, Insurance or another highly regulated environment
  • Comfortable operating with ambiguity and creating structure
  • Production engineering mindset, this isn’t a research or analytics role

What’s on offer

Up to £90k + meaningful equity

3–4 days a week in London

Unlimited holiday

Small team / high trust / significant ownership

Opportunity to join at the beginning of the growth journey

If you’re an applied ML/AI engineer who wants to have a real say in the product, architecture and direction of an AI-native FinTech, this could be a very interesting one.

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Posted: September 19th, 2026