Software Engineer (React Native - Platform) - UCX

Build the first features on the new React Native platform, validating the architecture before wider adoption. Create the testing infrastructure, including E2E tests, mock APIs, and shared utilities. Develop developer experience tooling such as project scaffolding, linting configurations, and onboarding guides. Build accessible design system components used across every screen in the app. Work with a real GraphQL API powering a financial application used by over a million people. Support other teams as they begin building on the platform you helped create. 2+ years of professional experience with React Native or React. Strong TypeScript skills and a commitment to writing clean, maintainable code. Someone who writes tests because they value correctness, not because they're told to. Ability to pick up new tools and technologies quickly. Curiosity about how things work at the platform level - architecture, tooling, patterns - not just feature delivery. Strong React developers without RN experience are welcome; the mobile specific parts can be learned on the job. Experience with platform level engineering (design systems, tooling, architecture). Familiarity with module federation, CI/CD pipelines, or security patterns. Experience with mobile testing frameworks such as Appium. Exposure to GraphQL and Apollo Client. Interest in fintech or large scale consumer apps. Rooftop gardens London's highest rooftop basketball court Wellness amenities including showers, lockers, and fresh towels Secure bike storage and drying rooms Stylish lounge and breakout spaces Canalside location near Little Venice Excellent transport links via Paddington and the Elizabeth Line dependant on role level only available to select during our annual benefits window, in November each yearHargreaves Lansdown is the UK's number one platform for private investors. Our purpose is to empower people to save and invest with confidence, and today, we are trusted with more than £120 billion by over 1.7 million clients.We are based in the heart of Bristol now with over 2,000 colleagues. We believe we have a workplace like no other, with constant learning, dynamic teams and a great ethos. We're steered by our core values that promote service, quality, innovation, and opportunity in everything we do.For more information about careers at HL and to see all our vacancies, please visit our .