Mobile Application Developer
Leading Investment Management firm is seeking a senior React Native/Typescript mobile developer to join the team building the mobile app for their flagship front office platform. This platform is used by portfolio managers and analysts cross-asset to both manage portfolios and place orders, so strong communication skills are just as important as technical ability.
Principal Responsibilities
Delivery :
- Delivering functionality enhancements across the Equity screens, including the Orders workflow.
- Driving cross-domain improvements to shared controls and components.
- Improving app reliability and observability through expanded E2E test coverage, telemetry, monitoring etc.
- Providing support for the application and its users.
Technical Excellence:
- Performing as a domain expert across the software lifecycle (coding, testing, deployment), leading significant pieces of development.
- Leading code reviews and actively participating in providing feedback on others' designs and code.
- Being accountable for technical debt in your own software.
- Owning complex technical problems — breaking them down methodically, making tactical vs. strategic trade-offs, and adapting your approach as new information emerges.
Leadership:
- Leading projects, work streams, or a small project team as required.
- Mentoring and supporting team members, particularly junior developers, and actively suggesting improvements to team practices.
Business Knowledge:
- Able to work directly with business partners in an asset management context.
- Can articulate business needs and translate them into technology solutions.
Required Skills and Experience:
Technical Skills
- React Native - Proven track record of shipping and maintaining high-scale, production-ready React Native applications. You should have experience managing the full lifecycle of an app that real users depend on — from feature development through to release and ongoing maintenance.
- Expert TypeScript - Deep comfort with advanced TypeScript patterns and ensuring strict type safety across Redux and navigation layers.
- Advanced State Management (Redux Toolkit + Saga) - Ability to architect and maintain complex state using Redux Toolkit and Redux Saga. Proficient with normalised state and advanced saga flows including error handling.
- Mobile CI/CD & Fastlane - Hands-on experience owning and debugging non-trivial CI/CD pipelines (GitLab preferred). This includes multi-environment builds, code signing via Fastlane Match, artifact publishing, and managing child pipelines.
- Testing Discipline - A test-first mindset with proficiency in Jest and React Testing Library, focusing on accessible querying by role and text. Comfortable with sophisticated mocking strategies and E2E frameworks such as Detox.
- iOS Build Toolchain - Solid understanding of the iOS ecosystem including Xcode, CocoaPods, simulators, and provisioning profiles. Able to independently troubleshoot build failures and signing issues.
Preferred Skills and Experience:
- React Navigation — Experience implementing and typing complex navigation patterns (stack, tab, and nested navigators).
- Mobile UX/UI Sensibility - A sharp eye for design and the ability to build intuitive interfaces that maximise limited mobile screen real estate.
- AI-Assisted Development — Proficiency with modern AI tools (Copilot, Cursor, etc.) to accelerate workflows and code quality.
- Data Visualisation — Experience rendering performant charts, graphs, or dashboards within a mobile context.
- Real-Time Data — Experience with WebSockets or transitioning applications from polling-based sync to real-time architectures.
- Form Management — Experience handling complex user input using Formik and Yup.
- Previous financial services experience is useful but not required.