Machine Learning Engineer

Machine Learning Engineer King's Crosss £150,000 - £175,000 We are hiring four people at senior and lead levels. Senior engineers own major capabilities, lead engineers also set technical direction and mentor others. About Descrial Descrial is a startup inside a twenty-year-old company TresVista has run the analytical work behind private capital since 2006. 2,000 people, 400+ clients including some of the biggest names in the industry, no outside capital and no outside board. That was the first chapter. And we enjoyed getting here! The next chapter is harder and more interesting We are moving from services to software, from one firm's workflows to an industry's, and from executing investment decisions to shaping how they get made. Thirty of us in King's Cross, small and senior, with day one founder intensity. At its fullest expression, Descrial changes how every serious investment firm decides. The role You report to the Head of Engineering and work hands-on on the UK core team. Our environment spans LangGraph and LangChain, leading model providers, Python/FastAPI services, and vector and graph retrieval. Token cost, latency and auditability are engineering constraints throughout. Your remit The agents and model layer You build LangGraph/LangChain workflows with state, checkpoints, tool calls and human approval patterns. Pydantic-validated prompts and structured outputs support extraction, summarisation, classification and reasoning over investment documents. You integrate…