Backend Engineer – Equity & AI Features (London)

Jack & Jill, a fast-growing accounting-tech SaaS startup in London, seeks a Backend Engineer to build automation and AI-enabled features that streamline financial workflows. You will design scalable backend systems and ship code rapidly, collaborating with the CPTO and a lean team.

Based in the UK, you will own critical services built with Spring Boot, Java/Kotlin, and Ruby on Rails, with some frontend work in React, delivering pragmatic solutions in a high-ownership environment.

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