Principal AI Engineer
- Hiring Organisation
- Oliver Bernard
- Location
- London Area, United Kingdom
Principal AI Engineer | Up to £220k + Equity | London, Hybrid We’re working with a well-funded frontier AI company building the systems used to train, evaluate and improve advanced AI agents. They’re hiring a Principal AI Engineer to take ownership … post-training, RL, evaluation and agent infrastructure. This is a hands-on IC role with real influence over technical direction. Responsibilities Lead major AI and research-engineering initiatives end to end Build and improve training, fine-tuning and post-training pipelines Develop evaluation systems, agent harnesses and feedback ...