Senior AI Engineer (Production LLM Systems)

📍 London, hybrid
💼 Permanent

About the Client

Our client is a well-established UK business operating in a regulated sector, with a large customer base and a strong engineering culture. They are investing seriously in AI and are building a dedicated engineering team to take it from experiments into systems the business relies on every day.

The Role

Teams across the business have already started building their own AI tools, and this hire will give that work a safe route into production. You will work across three areas:

• Partnering with business teams to automate and improve how they work
• Taking models built by the in-house ML team into live customer features
• Turning what you learn into shared tooling the whole company can use

The focus is building dependable software that happens to use LLMs, so you will spend far more time on engineering than on prompts or model training.

What You Will Do

• Work directly with business teams to understand their problems, define the right solution, then design, build, and deploy it
• Take projects from first prototype through to stable production, and agree on clear ownership once they are live
• Build Python pipelines that combine deterministic steps with LLM calls, using good judgment on where each one belongs
• Put evaluation, guardrails, monitoring, and cost controls around everything you ship
• Rebuild useful tools that teams have created for themselves into properly owned business systems when they prove their worth
• Deploy models built by the data science team into customer-facing production, covering serving, integration, and everything around the model
• Spot the patterns across your projects and turn them into shared tools and safe defaults that other teams can pick up and use themselves
• Learn from specialist engineers during the early stages of the team and help keep that knowledge in-house