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# Senior AI Engineer - AI Platform - £150k + Equity

- **Company:** Oliver Bernard Ltd
- **Location:** Greater London, UK
- **Experience:** Expert
- **Salary:** £150,000.0
- **Contract:** Permanent contract
- **Skills:** Training Data, Application Programming Interfaces (APIs), Artificial Intelligence, Python (Programming Language), Software Engineering, Reinforcement Learning, AI Platforms, Virtual Agents
- **Published:** September 9, 2026
- **Apply:** https://www.collegerecruiter.com/job/2854918176-senior-ai-engineer--ai-platform-150k--equity

## About the Role

* Hands-on experience fine-tuning or post-training models, rather than solely working with model APIs.
 * Strong foundations across modern AI/ML, including model training, optimisation and evaluation.
 * Practical experience with SFT, reinforcement learning, RLHF or related post-training techniques.
 * Strong Python skills and the software engineering depth to build clean, testable and reliable systems.
 * Experience owning meaningful technical outcomes and making trade-offs across research, data and engineering.

## Description

Working closely with leading AI labs, the team is developing the systems, data and tooling required to train and evaluate increasingly capable AI agents., * Own challenging AI and research-engineering problems from the initial idea through experimentation, implementation and production.

 * Develop approaches for creating, curating and improving high-quality training data for advanced models and AI agents.
 * Develop AI agent harnesses, sandboxed environments and systems that connect models to interactive software tasks.
 * Prototype rapidly, establish what works through experimentation, then turn successful approaches into robust, observable production systems.
 * Take ownership of substantial technical projects over months, rather than working solely on isolated experiments or features.


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