Senior AI Engineer

Senior AI Engineer - FinTech AI - £95K–£120K + equity - London / Remote (UK)

"AI Engineer" is doing a lot of heavy lifting on LinkedIn right now. Most adverts under that title describe someone who can call an OpenAI API. This isn't one of those.

I'm being briefed on senior AI Engineering roles inside Series A-C FinTech AI companies - places where the AI isn't a feature, it's the product. Agentic workflows running autonomously inside regulated banks. RAG pipelines built to handle FCA documentation. LLM applications shipped to real customers, with real evals, on real production traffic.

What the hiring managers consistently ask for:

• 4+ years building software in production, with 18+ months hands-on with LLMs
• Strong on the agentic stack - LangChain, LangGraph, LlamaIndex, CrewAI or equivalent
• RAG architecture: chunking, embeddings, vector DBs, reranking, eval frameworks
• Production-grade thinking: observability, latency, cost, model selection
• Bonus: fine-tuning experience, exposure to FCA-regulated environments, or shipped agentic systems

Package: £95K–£120K, mostly remote with London ties.

These aren't entry-level "wrap an LLM in a chat UI" jobs. They're for the engineers who can take an LLM from demo to production; where the model is the easy bit and everything around it is the hard bit.

If that's you, message me! No CV needed for a first conversation.