Senior AI Engineer - Stealth Start-up - London

🚀 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: * LLM training \& fine-tuning * Reinforcement learning \& post-training * Model evaluation \& optimisation * 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 . 📍 London – 2 days hybrid 💰 Up to £150k Interested in working on some of the more challenging problems in AI? Apply below for more details. London | Senior AI Engineer | Stealth Start-up