Senior Research Engineer (AI / LLMs)

Hiring at Senior and Staff level

📍 London (in-office)

💰 £200k – £300k + strong equity

🦄 Well-funded AI company working with major global brands

About the Role 👋

Working on production conversational AI systems, building and improving the models and decision-making layer behind AI agents used across voice, chat, and other channels.

What You’ll Be Doing ⚙️

• Building and improving LLM-powered systems (prompting, retrieval, memory, orchestration)

• Taking models from research → production, focused on real-world performance

• Designing training, evaluation, and optimisation pipelines

• Improving agent reliability, accuracy, and long-context reasoning

• Working closely with product and platform teams to ship improvements

What They’re Looking For 🧠

• 5+ years in ML / AI engineering or applied research

• Experience deploying LLMs in production

• Strong Python and modern ML tooling (training, eval, pipelines)

• Track record of taking ideas from prototype → real impact

• Product-minded — focused on outcomes, not just research

Why It’s Interesting 💡

• Working on real-world AI agents at scale, not just research

• High ownership — shipping directly into production

• Strong compensation band (£200k–£300k)

• Backed by top-tier investors and used by major enterprises

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