Salary: £62,000 - 90,000 per year Requirements: 8 years of professional mobile development experience, with 5 years using React Native. Strong knowledge of JavaScript/TypeScript, ES6 features, and modern React patterns. Experience integrating third-party libraries, analytics tools, and mobile SDKs. Strong understanding of secure mobile development, especially within financial or regulated environments. Familiarity with state management. Experience with CI/CD pipelines for mobile apps. Strong debugging skills, including performance profiling and memory optimization. Excellent communication skills and experience working in agile environments. Experience with native iOS (Swift) or Android (Kotlin/Java) is a plus. Experience in fintech or banking applications is a plus. Familiarity with feature driven modular architecture is a plus. Experience working with feature flags is a plus. UI automation testing experience is a plus. Responsibilities: Build and maintain a high-quality React Native application. Architect scalable mobile solutions that meet the demands of financial applications (security, performance, reliability). Integrate with RESTful and GraphQL APIs and collaborate closely with backend teams. Optimize app performance, including memory usage, load times, and smooth UI interactions. Implement high-security standards such as encryption, biometrics, and secure data storage. Lead code reviews, share best practices, and mentor junior developers. Work cross-functionally with designers, PMs, and QA to deliver features end-to-end. Stay up to date with the latest in React Native and mobile technologies. Technologies: Android Architect Backend CI/CD ES6 GraphQL Java JavaScript Kotlin Mobile React React Native Security Swift TypeScript iOS UX UI Design AI Cloud Support More: We are HL, the UKs largest direct-to-consumer savings and investment platform, trusted by over 2 million clients and administering more than £172 billion in assets. Founded in 1981 and headquartered in Bristol, our mission is to help people achieve financial freedom by providing a secure home for their savings and investments. We are a market-leading financial services innovator offering a competitive salary and performance-based bonuses, alongside excellent benefits including a pension contribution up to 19%, private medical insurance, and lifestyle perks. Our stunning Paddington Central offices feature landscaped rooftop gardens, wellness amenities, and unbeatable transport links, supporting a hybrid working model that balances collaboration with personal productivity. last updated 9 week of 2026