Senior AI Engineer – London – AI Start-up

Company: Oliver Bernard
Apply for the Senior AI Engineer – London – AI Start-up
Location: London
Job Description:

Oliver Bernard have partnered with an exciting AI-native start-up that’s building technology used by institutional investors and trading teams.

They’re now looking for a Senior AI Engineer to join the team and help take their AI systems from experimentation into production.

You’ll be working across:

  • LLM / NLP pipelines and model evaluation
  • Python services and data pipelines
  • AWS, containers and CI/CD
  • Identifying ways to improve accuracy, reliability and performance
  • Working closely with engineers, researchers and market specialists

They’re looking for someone with strong Python and software engineering fundamentals, alongside hands-on experience building and deploying AI/ML systems.

Experience with LLMs/NLP, multi-agent workflows, fine-tuning, Airflow or AWS would be useful, but the main thing is having a track record of actually building and shipping things.

London — 3 days in the office

Lots of ownership and scope to influence the technical direction

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Posted: October 1st, 2026