Senior Software Engineer

Location: Greater London

## Senior Software Engineer Apply locations:
London time type:
Full time posted on:
Posted Todaytime left to apply:
End Date:
July 31, 2026 (15 days left to apply) job requisition :
R8159# 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# As a Senior React Native Developer, 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 developers, and drive best practices across our mobile engineering discipline.
** What You’ll Do
*** 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.
** What We’re Looking For
*** 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.
** Nice to Have
*** 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.
** Interview Process
**** 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 take home exercise****(1 week)
** A take home project that needs to be extended, fixed and improved which can showcase at what level your React Native ability is at.
** Stage 3 – Technical interview (60–90 mins)
** In the session we will walkthrough your coding challenge submission and ask you different questions around coding, architecture, security and problem‐solving.
** Working Schedule
** We're based in the stunning
** Paddington Central offices at 4 Kingdom Street**, a modern workspace designed to energise your day and elevate collaboration.
** What Makes It Special?**
* ** Landscaped rooftop gardens** - perfect for a breath of fresh air or informal catch-ups.
* ** London's highest rooftop basketball court** - yes, really!
* ** On-site café and bar
** with sweeping views across West London.
* ** Wellness amenities
** including showers, lockers, hairdryers, and fresh towels.
* ** Cyclist-friendly
** with secure bike storage and drying rooms.
* ** Stylish lounge areas, booths, and breakout spaces
** for focused work or relaxed chats.
* ** Canalside location
** near Little Venice, with floating restaurants, coffee shops, and a seasonal pop-up garden bar.
* ** Unbeatable transport links** - just steps from Paddington Station and…