Principal React Native Engineer — AI-Driven Mobile Platform

United States Digital Space LLC; Greater London; Hybrid; GBP 135,000 - 175,000; Full time

Benefits offered by this job

£135,000 – £175,000 base salary

Equity package

25 days holiday + bank holidays

Private health insurance

Extended sick pay & parental leave

Cycle to work scheme

Job summary

United States Digital Space LLC in London is seeking a Principal Product Engineer focused on React Native to own the mobile experience across iOS, Android, and web. You’ll lead the end-to-end delivery, bring AI into product features, and shape the mobile architecture in a fast-paced, customer-focused environment.

The role demands 10+ years building production software, deep React Native and Expo expertise, and a strong TypeScript foundation.

Qualifications

• 10+ years of production software experience across mobile/back-end/full-stack.

Responsibilities

• Develop mobile and web experiences using React Native and Expo across iOS, Android, and web.
• Introduce AI into daily workflows and share patterns to speed up delivery.
• Define AI integration direction to deliver real customer value.
• Own end-to-end delivery: design, implement, and ship features to production.
• Manage on-call rotation and production health.
• Maintain fast, reliable app performance and secure releases.
• Shape architecture and coding standards across the mobile stack.

Skills

React Native

Expo

TypeScript

AI daily

Testing

Production mindset

Communication

Leadership

Tools

NestJS

GraphQL

GCP/DevOps

Firebase

Job description

United States Digital Space LLC in London is seeking a Principal Product Engineer focused on React Native to own the mobile experience across iOS, Android, and web. You’ll lead the end-to-end delivery, bring AI into product features, and shape the mobile architecture in a fast-paced, customer-focused environment.

The role demands 10+ years building production software, deep React Native and Expo expertise, and a strong TypeScript foundation.