Lead React Native Developer

Lead React Native Developer

Posted 7 days ago by Cognitive Group | Part of the Focus Cloud Group

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Negotiable
Inside
Onsite
London Area, United Kingdom
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Android (Operating System) Apple IOS Application Programming Interface (API) Authentications Automation Bluetooth Continuous Integration and Continuous Delivery Design Elements And Principles DevOps Firebase Front End (Software Engineering) Google Play HTML5 HyperText Markup Language (HTML) JavaScript (Programming Language) Management Mobile Devices MongoDB Node.js Nodes (Networking) Post-Production React.js React Native Responsive Web Design Security Clearance Test Automation User Interface Web Applications Web Design Workflows

Summary: The React Native Technical Lead will oversee the design, development, and deployment of mobile and web applications using React Native, React.js, and Node.js. This role requires collaboration with cross-functional teams to deliver user-friendly solutions and involves providing technical leadership and mentorship. The position is contract-based for 6 months and requires SC clearance or the ability to obtain it. The role is primarily on-site in London for 2 days a week and is classified as inside IR35.

Key Responsibilities:

  • Lead the design, development, and deployment of scalable mobile and web applications using React Native (Expo), React.js, and Node.js.
  • Collaborate with product managers, designers, and cross-functional teams to define technical requirements and deliver robust, user-friendly solutions.
  • Develop high-performing, reusable UI components based on design prototypes.
  • Implement and integrate third-party services, libraries, and APIs.
  • Set up new repositories/modules with appropriate package configurations based on project needs.
  • Maintain and enhance existing applications by fixing bugs and implementing new features.
  • Provide technical leadership and mentorship through architectural discussions, code reviews, and documentation.
  • Work with native modules and optimize app performance across iOS and Android platforms.
  • Contribute to app release cycles and deployments to the App Store and Google Play.
  • Drive DevOps practices, including CI/CD, test automation, and infrastructure support.
  • Lead post-production support and collaborate on ongoing improvements.

Key Skills:

  • Advanced proficiency in JavaScript (ES6+), React, and React Native (Expo).
  • Hands-on experience with state management tools (e.g., Redux, Context API).
  • Familiarity with React-related technologies: React Hooks, React Navigation, Maps, Gestures, Axios/React Query, AsyncStorage, etc.
  • Solid front-end skills with HTML5, CSS3, Responsive Web Design, and bundling tools.
  • Strong understanding of UI/UX design principles for both iOS and Android.
  • Knowledge of mobile architecture including Bridged and Bridgeless React Native patterns.
  • Experience with Git-based workflows, peer code reviews, automated testing using JEST/React Testing Library, and CI/CD pipelines.
  • Backend integration and experience with Node.js and third-party APIs.
  • Experience addressing mobile-specific challenges: offline capabilities, real-time data, authentication, push notifications, Bluetooth, media handling, etc.
  • Familiarity with Firebase, MongoDB, or other databases (desirable).
  • Accessibility implementation and testing using tools like NVDA/screen readers (desirable).

Salary (Rate): undetermined

City: London

Country: United Kingdom

Working Arrangements: on-site

IR35 Status: inside IR35

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

React Native Technical Lead – Contract 6 Months - Inside IR35 2 days onsite in London SC Cleared or SC Clearable

Key Responsibilities

  • Lead the design, development, and deployment of scalable mobile and web applications using React Native (Expo), React.js, and Node.js.
  • Collaborate with product managers, designers, and cross-functional teams to define technical requirements and deliver robust, user-friendly solutions.
  • Develop high-performing, reusable UI components based on design prototypes.
  • Implement and integrate third-party services, libraries, and APIs.
  • Set up new repositories/modules with appropriate package configurations based on project needs.
  • Maintain and enhance existing applications by fixing bugs and implementing new features.
  • Provide technical leadership and mentorship through architectural discussions, code reviews, and documentation.
  • Work with native modules and optimize app performance across iOS and Android platforms.
  • Contribute to app release cycles and deployments to the App Store and Google Play.
  • Drive DevOps practices, including CI/CD, test automation, and infrastructure support.
  • Lead post-production support and collaborate on ongoing improvements.

Your Profile

Essential Skills & Experience:

  • Advanced proficiency in JavaScript (ES6+), React, and React Native (Expo).
  • Hands-on experience with state management tools (e.g., Redux, Context API).
  • Familiarity with React-related technologies: React Hooks, React Navigation, Maps, Gestures, Axios/React Query, AsyncStorage, etc.
  • Solid front-end skills with HTML5, CSS3, Responsive Web Design, and bundling tools.
  • Strong understanding of UI/UX design principles for both iOS and Android.
  • Knowledge of mobile architecture including Bridged and Bridgeless React Native patterns.
  • Experience with Git-based workflows, peer code reviews, automated testing using JEST/React Testing Library, and CI/CD pipelines.
  • Backend integration and experience with Node.js and third-party APIs.
  • Experience addressing mobile-specific challenges: offline capabilities, real-time data, authentication, push notifications, Bluetooth, media handling, etc.

Desirable:

  • Familiarity with Firebase, MongoDB, or other databases.
  • Accessibility implementation and testing using tools like NVDA/screen readers.
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