Senior Backend Engineer - AI-Driven Finance APIs (Remote)

Ersilia in London is seeking a Senior Backend Engineer to build production Python backends (FastAPI) powering AI features for professional investors. You will own APIs, design orchestration for agentic workflows, and work with PostgreSQL and ClickHouse, shipping features from sketch to live production.

The team is small and highly impactful, with opportunities to mentor others, influence architecture, and collaborate closely with founders.

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