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Senior AI Engineer - Stealth Start-up

Job in London, Greater London, W1B, England, UK
Listing for: Oliver Bernard
Full Time position
Listed on 2026-08-24
Job specializations:
  • Software Development
    AI Engineer (Applied/Software), Machine Learning/ ML Engineer, AI Reliability/ Performance Engineer
Salary/Wage Range or Industry Benchmark: 150000 GBP Yearly GBP 150000.00 YEAR
Job Description & How to Apply Below

Senior AI Engineer | AI Research | London | Up to £150k

Oliver Bernard have partnered with a stealth-mode AI start-up working on cutting-edge research across LLMs, reinforcement learning and AI agents.

They’re looking for a Senior AI Engineer with a strong mix of research and software engineering experience join their team and work on some genuinely challenging problems across LLMs, reinforcement learning and agentic systems.

The role will cover:

  • Building AI agents
  • Developing feedback loops
  • AI research

You’ll need strong software engineering fundamentals alongside experience in areas such as LLM training, RL, post-training or evaluation
.

Interested in working on some of the more challenging problems in AI?

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Position Requirements
10+ Years work experience
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