Founding Backend Engineer – AI Platform, Equity

Company: Jack & Jill
Apply for the Founding Backend Engineer – AI Platform, Equity
Location: London
Job Description:

Jack & Jill is hiring a Founding Backend Engineer to architect and own the backend for a next-generation agentic collaboration platform. You will build a scalable, secure stack leveraging TypeScript, Node.js and PostgreSQL to support real-time workflows for global enterprise clients.

As a founding engineer, you will influence the technical direction, own cloud infrastructure, data models and performance optimizations, and receive significant equity in a London or San Francisco based startup

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Posted: July 13th, 2026