Senior LLM Evaluation Engineer & Coding Prompts

Braintrust • london, england, United-Kingdom • Posted May 19, 2026

Location london, england
Job Type Full-time
Category Engineering
Posted May 19, 2026
Braintrust is seeking experienced software engineers for an evaluation and annotation team focused on large language models (LLMs). The role requires over 10 years of software development experience, including strong Python skills and familiarity with LLM evaluation. You will create coding prompts, evaluate model outputs, and document issues. The position is a contract engagement based in the UK, with a preference for London-based candidates, and potential remote work for strong candidates.
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