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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 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 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 experience

Strong proficiency in TypeScript , React , 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

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 or hold ILR to be considered for this opportunity

If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.