Mobile Technical Architect, 6 months, London/Hybrid, £660/day (Inside IR35)

My client, a leading digital consultancy are currently working with a leading financial institute and are looking to bring on a Mobile Technical Architect on a 6 month initial contract.

They are seeking a skilled and hands-on Mobile Technical Architect ( React Native + TypeScript) to lead the design, development, and integration of a cutting-edge mobile application. The ideal candidate will have deep expertise in React Native for cross-platform mobile development, Expo CLI, Java-based microservices, and secure integration with third-party FinTech platforms. You will play a pivotal role in shaping the technical strategy, ensuring scalability, performance, and security across the architecture.

Key Responsibilities:

* Lead architecture design and development of a cross-platform mobile app using React Native, Type script,

* Integrate with Back End services and APIs using Java (Spring Boot, Apollo Graph QL)

* Integrate with external FinTech APIs (eg, KYC, Payments, Open Banking)

* Define mobile architecture standards, patterns, and CI/CD pipelines

* Guide the team on security best practices (authentication, encryption, session management)

* Collaborate with Product Owners, UI/UX designers, and Backend teams to ensure cohesive delivery.

* Perform code reviews, enforce coding standards, and mentor developers.

* Ensure high availability, scalability, and performance of the solution.

* Contribute to DevOps practices (eg, containerisation, monitoring, cloud deployment)

Required Skills & Experience:

* 10+ years of experience in mobile development, including React Native (3+ years) and TypeScript

* Strong knowledge of mobile architecture patterns (MVVM, Clean Architecture, Modularization, etc.)

* Strong hands-on expertise in React Native (iOS & Android deployment)

* Experience with native modules and bridging between native code (Swift/Kotlin/Objective-C/Java) and React Native

* Proficiency in Java (Spring Boot) and RESTful API design

* Proficiency in state management tools such as Redux, Zustand, or Recoil

* Experience integrating with FinTech APIs and third-party services

* Solid knowledge of OAuth2, JWT, encryption standards, and secure mobile app practices

* Exposure to app analytics, crash reporting, and performance monitoring tools (Firebase, Sentry, Instabug)

* Experience with cloud platforms (AWS/GCP/Azure) and API gateways. Preferably Azure.

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