Senior Software Engineer; React Native - UCX

Overview

Excited to grow your career? Our purpose is to make it easy for people to save and invest for a better future. We are looking for great people to join us, so please come and invest in YOUR future at Hargreaves Lansdown.

We know that sometimes people can be put off applying for a job if they don't tick every box. If you're excited about working for us and have most of the skills or experience we're looking for, please go ahead and apply. We’d love to hear from you!

About the role

HL is the UK’s 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 purpose is to help people achieve financial freedom by providing a single, secure home for their savings and investments.

We continue to accelerate its digital transformation leveraging data, cloud driven technologies, AI, and modern technology to deliver personalised, world-class financial experiences h over 40 years of industry leadership and an award-winning service, we remain a market-leading financial services innovator committed to empowering clients to save and invest with confidence.

As a Senior Software Engineer, you will lead the development of our mobile applications, ensuring they are reliable, secure, scalable, and delightful to use. You’ll collaborate with product managers, designers, backend engineers, QA automation engineers to support a part of the HL platform.

You’ll have the opportunity to influence architectural decisions, mentor other Engineers, and drive best practices across our mobile engineering discipline.

• 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 Graph
  
  QL 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.

• 8+ years of professional mobile development experience, with 5+ years using React Native.
• Strong knowledge of JavaScript/Type Script, 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).
• Experience in fintech or banking applications.
• Familiarity with feature driven modular architecture.
• Experience working with feature flags.
• UI automation testing experience.

• Stage 1 – Discussion with our Hiring Manager (30 mins). A brief conversation to explore your background, motivations, and fit for the team and role.
• Stage 2 – Technical Interview (60–90 mins). A hands-on deep dive into your React Native expertise, covering coding, architecture, and problem-solving.
• Stage 3 – System Design (60–90 mins). A high-level design discussion where you outline how you’d architect and scale a complex mobile feature or system.

We offer a competitive salary, depending on experience, alongside a generous performance-based bonus scheme.

Your total reward package includes:

• Up to 19% pension contribution - helping you plan confidently for the future
• Private medical insurance - giving you peace of mind and access to top-tier healthcare
• A wide range of excellent benefits, from lifestyle perks to wellbeing support, designed to help you thrive both in and out of work

We believe in recognising and rewarding the impact you make…