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Job listing

London, United KingdomNot Disclosed

Full Stack React Native Lead at Innovative healthtech AI startup

Are you a React Native expert looking to build technology that actually changes lives? This London-based healthtech startup is looking for a Lead Developer to architect an AI-driven mobile experience that supports mental health recovery. You will work with a modern stack including Expo, NestJS, and AWS Bedrock to integrate LLMs into a production app used by thousands. If you have 6+ years of experience and a passion for mission-driven engineering, this is your chance to lead a talented team in a high-impact, well-funded environment.

Overview

Role overview

You will lead the development of a high-impact mobile platform that integrates advanced AI to support mental health outcomes. By architecting scalable React Native applications and integrating LLM-powered features, you will directly influence the recovery journey of thousands of users. This role combines technical leadership with hands-on full-stack engineering in a mission-driven environment.

Company

About the company

Innovative healthtech AI startup

Responsibilities

What you will do

  • Architect and maintain a complex React Native codebase featuring over 30 modules and robust state management via Redux Toolkit.
  • Lead the integration of AI services and LLM backends using AWS Bedrock to create personalized user experiences.
  • Own the end-to-end mobile release process, including App Store submissions and the implementation of advanced monitoring tools like Datadog.

Candidate profile

Who this is a fit for

  • Has over 6 years of experience in React/React Native with at least 3 years specifically leading mobile application development.
  • Possesses deep expertise in the Expo ecosystem (EAS) and shipping production-grade apps to both iOS and Android stores.
  • Demonstrates a strong full-stack background with TypeScript, NestJS, and AWS, alongside a passion for mentoring junior engineers.

What makes it remarkable

Why this role is remarkable

  • Lead the architecture of a sophisticated AI-powered mobile experience that delivers measurable improvements to user well-being.
  • Join a well-funded, mission-driven team where you will work directly with clinical psychologists and AI heads to build ethical technology.
  • Enjoy a high-impact role in a supportive Shoreditch-based environment that prioritizes sustainable development, modern tech, and rapid iteration.

Jack & Jill

How Jack & Jill work together

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Jill
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