Senior React Native Engineer

Mason Alexander; England; On-site; GBP 50,000 - 70,000; Full time

Job summary

A rapidly growing healthtech company based in the UK seeks a Senior React Native Engineer to enhance customer engagement features in their mobile app. This role requires extensive experience in software engineering, particularly with React Native, and a strong understanding of user retention strategies. You will engage with cross-functional teams to deliver vital features and maintain high performance. Applicants must be UK citizens or hold ILR for consideration.

Qualifications

• 4+ years in software engineering with 2 years in React Native.
• Experience with mobile testing: unit, integration, E2E.
• Experience in deploying apps on App Store and Google Play.

Responsibilities

• Develop and maintain customer-facing features in React Native.
• Monitor performance and resolve bugs proactively.
• Contribute to architectural decisions and best practices.

Skills

React Native

TypeScript

GraphQL

Expo

Mobile UI development

CI/CD pipelines

User retention strategies

Tools

Braze

PostHog

Stripe

Job description

About the Company

A rapidly growing UK-based healthtech company is building smarter, tech-enabled solutions to improve health outcomes through personalised digital care.

They are looking for a Senior React Native Engineer to join their team and take the lead on building out customer engagement and retention features across their mobile app. This includes everything from daily tracking and push notifications to weekly check-ins and in-app content delivery.

This is a high-impact, product-facing role where you’ll work closely with cross-functional teams to deliver features that support users on their health journey and drive long-term engagement.

Key Responsibilities

• Develop and maintain key customer-facing features within the React Native mobile app, such as:
• Daily / weekly check-ins
• Progress tracking
• Messaging and support interfaces
• In-app content delivery
• Add-on purchase flows
• Translate behavior change models into simple, user-friendly mobile experiences
• Contribute to architectural decisions and codebase best practices
• Monitor performance and proactively resolve bugs, crashes, and UX challenges

Required Skills & Experience

• 4+ years in software engineering, with at least 2 years of hands‑on React Native experience
• Strong proficiency in TypeScript, React Native, GraphQL, and Expo
• Experience deploying apps to the App Store and Google Play, with OTA updates
• Familiarity with CI/CD pipelines and integrating third-party SDKs
• Track record of building high‑quality mobile UIs and user experiences
• Strong understanding of mobile testing (unit, integration, E2E)

Retention & Product Skills

• Experience working on products with an emphasis on user retention, engagement, or behavior change
• Knowledge of push notification strategies, in‑app messaging, and customer lifecycle design
• Comfortable collaborating with cross‑functional teams (Product, Marketing, Clinical, etc.)
• Skilled in writing clear technical specs and documentation

Preferred

• Background in healthtech or consumer wellness apps
• Familiarity with tools like Braze, PostHog, Stripe
• Knowledge of privacy frameworks (e.g. GDPR), especially around notifications and tracking consent

Please note applicants must be UK citizens or hold ILR to be considered for this opportunity