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Datadog helps thousands of teams monitor cloud and AI workloads. London engineers extend observability to LLM traces, eval scores, and cost attribution.Senior ML Engineer — LLM observability: build product surfaces for prompt versioning, drift detection, and red-team signal aggregation.Ideal if you…

Perks · Equity, parental leave, hybrid London hub.

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Thames Inference Labs ships assistant and RAG platforms for regulated customers in banking, insurance, and critical infrastructure. We blend pragmatic delivery with strong evaluation and rollback discipline so models never become a black-box liability.We are hiring a Staff LLM Engineer based in…

Perks · Private medical, pension, learning budget, cycle scheme.

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London hybrid team blends classical learning-to-rank with embeddings and GenAI-assisted summaries. We optimise for buyer trust, seller fairness, and measurable GMV lift—not vanity offline metrics.You will collaborate with PM, search infra, and marketplace integrity squads.What you will doDesign…

Perks · Private medical, pension match, commuter scheme.

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Cambridge-adjacent R&D cell partners with product teams across Europe to institutionalise evaluation: harnesses, judge calibration, and dataset governance before models reach customers.Hybrid; willingness to publish internal tech notes (not necessarily public papers).What you will doImplement…

Perks · Cycle scheme, learning budget.

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