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Staff Backend Engineer

London HQ💼 Full-time🗓 2026-09-21 → 2026-09-30

Core

Design, build, and scale backend infrastructure and production AI personalization engines for a mobile-first preventative health product.

Role type

Staff Backend Engineer (founding team)

Builds

Blood testing infrastructure, AI personalization systems, and core backend services for preventative health users.

Domain

Digital Health / AI / Backend Systems

Deliverable

production ML models

Required skills

Backend architecture, system design, reliability engineering, observability, AI system integration, stakeholder collaboration

Preferred skills

TypeScript/Node.js, high-scale system scaling, ML/AI production experience, regulated industry experience

Technologies

TypeScript, Node.js, Go, Kotlin, Python

Responsibilities

Own major backend features end-to-end, shape system architecture, scale blood testing infrastructure, build production AI systems, improve reliability and observability

Seniority

Staff, hands-on IC

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