Senior Product Engineer — LLM AI Platform, Equity

Harnham in London is seeking a Product Software Engineer to take ownership of developing and scaling an AI-powered platform in an early-stage startup environment.

You will build LLM-enabled features for enterprise customers, design backend services and APIs, own RAG workflows, monitor quality, and align the roadmap with product leadership and clients.

The role offers meaningful equity, hybrid London work, and the chance to influence engineering culture from day one.

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