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Job Description

AI Engineer – LLMs / Applied AI

London (onsite)

Salary up to £180k + equity

We’re working with a fast-growing AI startup building proprietary algorithms that are redefining how complex knowledge work is done.

With strong revenue traction, top-tier investors, and a deeply technical founding team, this is a chance to help build a category-defining company from the inside.

What you’ll be responsible for:

Designing, building, and deploying production-grade AI algorithms that materially improve output quality in real-world applications Owning state-of-the-art evaluation pipelines to benchmark models, guide R&D, and support rapid iteration Researching and implementing advanced prompt engineering and LLM interaction techniques Working across the stack (primarily Python, but also Postgres and React) to ensure research translates cleanly into customer-facing product Moving fast from idea to production, with direct customer feedback loops

The environment:

High-ownership, low-ego team of AI researchers and elite engineers Strong commercial traction with hundreds of enterprise users globally Recently closed a major funding round from top-tier investors Ambitious, execution-focused culture with very high engineering standards

What we’re looking for:

Must-haves:

Deep Python expertise and experience shipping AI systems into production Hands-on experience with LLMs, prompt engineering, and modern model architectures Proven track record building evaluation frameworks or ML pipelines used in live environments Comfort working end-to-end across the stack Clear communicator who can reason about complex technical trade-offs 4+ years experience total

Nice-to-haves:

Publications at top ML conferences (NeurIPS, ICLR, ICML) Experience with LLM evaluation tooling (e.g. OpenAI Evals or similar) Strong GitHub presence or technically ambitious side projects

What’s on offer:

Salary up to £180k + meaningful equity Work directly with a highly technical founding team Visa sponsorship and private medical insurance London-based, high-performance office environment with meals provided Opportunity to help shape a product and company with genuine breakout potential

Apply below!

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