# React Native Mobile Developer in London

At the company, we identify and actively invest in opportunities to help people thrive in an evolving world. As a premier global asset management organization with more than 85 years of experience, we provide investment solutions and a broad range of equity, fixed income, and multi-asset capabilities to individuals, advisors, institutions, and retirement plan sponsors. We take an active, independent approach to investing, offering our dynamic perspective and meaningful partnership so our clients can feel more confident. We believe doing the right thing for our clients and our associates is good business. With a career at the firm, you can expect opportunities to create real impact at work and in your community. You’ll enjoy resources to support your career path, as well as compensation, benefits, and flexibility to enrich your life. Here, you’ll find a collaborative culture that respects and values differences and colleagues who share a spirit of generosity. Join us for the opportunity to grow and make a difference in ways that matter to you.

Job Overview

We are looking for a senior React Native iOS mobile developer to join our team building the mobile app for our flagship portfolio management platform. This platform is used by portfolio managers and analysts across Equity, Fixed Income and Multi-Asset to both manage their portfolios and place orders. In this role you will design, develop, modify, adapt and implement short and long-term solutions to enhance and expand this functionality.

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.
• Buy or sell side Equity domain knowledge.

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 asset management/financial services experience is useful but not required.

Commitment to Diversity, Equity, and Inclusion

At the company, our associates are our greatest asset. We thrive because our company culture is built on inclusion and because we sustain a work environment where associates can bring their best selves to work every day. The backgrounds, talents, and experiences of our global associates allow us to embrace new ideas and perspectives that move our business priorities forward and enable us to deliver strong client outcomes. Here, you can expect equal opportunity and fair and consistent treatment for all. The company is an equal opportunity employer and values diversity of thought, gender, and race. We believe our continued success depends upon the equal treatment of all associates and applicants for employment without discrimination on the basis of race, religion, creed, colour, national origin, sex, gender, age, mental or physical disability, marital status, sexual orientation, gender identity or expression, citizenship status, military or veteran status, pregnancy, or any other classification protected by country, federal, state, or local law.