Lead Software Engineer, React Native

Job Role: Lead Software Engineer, React Native

Job Type: Full Time, Permanent

Location: London, Hybrid (3 office days a week)

Role purpose

As a valued member of our engineering team, you will contribute to the development of our innovative application using React Native. Working with a modern JavaScript stack, your primary focus will be on coding, testing, and enhancing the functionality of Travelex's and partner mobile applications.

In this role, you will collaborate closely with our Principal Engineer and the Mobile Apps team members. While this is primarily an engineering role, we are always looking for developers who have a keen eye for product and who can contribute to the development of features at a product level before they are implemented.

If you are eager to be part of a dynamic team, contribute to Travelex's digital-first strategy, and be part of a company that values its employees while prioritizing work-life balance, we invite you to explore this exciting opportunity with us.

Key accountabilities and decision ownership:

Technical Leadership

Lead the design and implementation of key features and components of our React Native mobile application.

Make informed technical decisions that improve performance, reliability, and scalability.

Participate in architectural discussions and help shape the technical direction of mobile applications.

Provide support and unblock engineers during development, testing, and integration.

Project Ownership & Delivery

Own the technical delivery of high-visibility features or workstreams.

Work with Product and Design to refine requirements, contribute to planning, and identify risks early.

Break down complex tasks into clear, manageable deliverables for the team.

Communicate progress and technical considerations clearly to stakeholders.

Collaboration & Mentorship

Mentor and support engineers, helping them grow their technical skills and confidence.

Lead by example in code reviews, ensuring best practices and quality standards are upheld.

Help foster a healthy engineering culture based on learning, knowledge sharing, and accountability.

Engineering Quality

Champion strong testing, code quality, and performance practices.

Knowledge of best practices in security, performance and accessibility

Identify areas for improvement within the codebase and contribute to long-term maintenance plans.

Skills, knowledge, and experience:

Must have:

8+ years of software development experience

5+ years of professional experience in React Native

Strong proficiency with TypeScript, React Native (or Expo), and mobile development patterns.

Proven track record of shipping complex mobile applications to production

Comfortable mentoring peers and supporting technical decision-making.

Solid understanding of API integration (GraphQL and/or REST).

Strong communication skills — able to work effectively with engineers, product managers, and designers.

Experience with native modules and bridging in React Native

Familiarity with state management libraries (Zustand, Redux, MobX etc.)

Experience with the testing pyramid and tools such as Vitest, Jest, React Native Testing Library, Maestro, Detox

Nice to have:

Experience with iOS (Objective-C, Swift) or Android (Java, Kotlin) native development.

Experience with mobile release processes for the App Store and Play Store.

Experience with performance optimisation and profiling in React Native.

Familiarity with analytics and crash reporting tools.

Experience building internationalised mobile applications

Experience developing white-label applications

Why Travelex?

To remain the world’s leading foreign exchange specialist, we are focused on making our customers’ lives simpler, more engaging and hassle free while they travel or move money abroad. We promise to give them the freedom and peace of mind to explore the world, their way – enabling them to travel confidently because they know they have us to lean on.

Customer centricity and digital are at the heart of our business strategy. Our commitment to innovation has never been greater, with the development of a number of digital-first, greenfield products and services. And with the Travelex's resources, deep industry experience and leading brand we are inventing the future of FX, cross-border e-commerce and international payments.

We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status.