Machine Learning and AI Engineer - London

You have built real AI systems that ship, break, and get fixed under pressure.
You care less about model demos and more about decisions that move capital.
You want your work used daily by professional investors, not buried in notebooks.
You are comfortable owning hard problems end to end.
If you want a calm job optimizing benchmarks, this is not it.

The Role, In Plain English

You will build and evolve the AI systems that power Reflexivity’s investment insights.
This role exists because off-the-shelf models and generic pipelines are not enough.
You will work at the intersection of reasoning engines, proprietary data, and real market impact.
Your work directly affects how investors understand earnings, risk, and market catalysts.

What You’ll Be Responsible For

• Design, fine-tune, and deploy ML and LLM-driven systems used in production by professional investors
• Build and maintain inference pipelines that are fa...