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Senior Backend Engineer

London HQ💼 Full-time🗓 2026-09-20 → 2026-09-29

Core

Founding Backend Engineer building a mobile-first preventative health product combining blood tests, longitudinal data, and AI personalization.

Role type

Founding Backend Engineer (IC)

Builds

Production AI systems, blood testing infrastructure, and backend features for a preventative health platform.

Domain

Digital Health / Preventative Medicine

Deliverable

production ML models

Required skills

Backend architecture, system design, reliability engineering, observability, end-to-end ownership, AI tool proficiency

Preferred skills

TypeScript, Node.js, Go, Kotlin, Python, high-scale system scaling, ML/AI production experience, healthcare domain knowledge

Responsibilities

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

Seniority

Senior, hands-on IC

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