Senior Mobile App Developer (Fintech)

TL;DR

Senior Mobile App Developer (Fintech): Developing and delivering a secure, production-ready mobile banking app for iOS and Android using React Native and Expo with an accent on mobile security, app store deployment, and cross-functional collaboration. Focus on implementing secure authentication, ensuring app performance and stability, and supporting operational readiness in a regulated financial environment.

Location: Onsite in London, United Kingdom

Company

hirify.global is a specialist bank combining strong digital capabilities with human expertise to deliver diverse financial products and services.

What you will do

• Shape and deliver the mobile MVP in collaboration with Tech Lead and cross-functional teams.
• Build and maintain high-quality mobile experiences using React Native and Expo.
• Implement secure user flows ensuring compliance with platform and regulatory requirements.
• Support app store submissions and release processes for Apple and Google Play stores.
• Ensure robust testing, monitor app performance, and support troubleshooting and incident resolution.
• Apply modern mobile security practices and support operational readiness through monitoring and release management.

Requirements

• Must be located in or able to work onsite in London, United Kingdom.
• Experience with React Native and Expo and proven track record of publishing apps to Apple and Google app stores.
• Deep understanding of secure mobile authentication (OAuth2/OIDC PKCE, biometrics, SCA) and mobile security best practices.
• Hands-on experience with CI/CD, automated testing, and mobile observability.
• Excellent communication skills and ability to work in cross-functional teams.
• English proficiency at least B2 level.

Culture & Benefits

• Family-friendly policies including maternity, adoption, and paternity from day one.
• Access to mindfulness and health apps like Headspace and Peppy.
• Employee Assistance Programme supporting mental wellbeing and other personal concerns.
• Cycle to work scheme and gym membership discounts.
• Contributory pension scheme and death in service benefits.
• Minimum 27 days holiday with flexible holiday buying/selling options.
• Annual discretionary bonus and recognition schemes.