Senior Software Engineer

Job in City Of London, Central London, Greater London, England, UK

Listing for: Hargreaves Lansdown

Full Time, Part Time position
Listed on 2026-07-23

Job specializations:

Software Development
App Developer - Mobile/Web, React.js, Full Stack Developer, Software Engineer

Salary/Wage Range or Industry Benchmark: 75000 - 100000 GBP Yearly GBP 75000.00 100000.00 YEAR

Location: City Of London

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.
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.

Working Schedule

Hybrid working model: 2-3 days a week in the office, remote flexibility otherwise.
Full-time role, 37.5 hours per week, Monday to Friday.

#J-18808-Ljbffr