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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.
