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.

• 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 Type Script - Deep comfort with advanced Type Script 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 (Git Lab 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.

• i OS Build Toolchain - Solid understanding of the i OS ecosystem including Xcode, Cocoa Pods, 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 Web Sockets 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.
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