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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # React.js Developer - **Company:** Fogsphere - A Trading Name of Redev AI Ltd. - **Location:** London, UK - **Contract:** Permanent contract - **Skills:** Clean Code Principles, JavaScript (Programming Language), Application Programming Interfaces (APIs), Computer Vision, Cloud Computing, Continuous Delivery, Continuous Integration, Data Structures, Software Debugging, Document Object Model, ECMAScript, Design of User Interfaces, Human-Computer Interaction, JSON, Object-Oriented Software Development, TypeScript, Website Wireframe, ReactJS, Delivery Pipeline, Git, Webpack, Kubernetes, Npm(Software), Front End Software Development, React Redux, Restful APIs, Mocha, Software Version Control - **Published:** August 26, 2026 - **Apply:** https://www.collegerecruiter.com/job/2815153683-reactjs-developer ## About the Role * Proficiency in JavaScript, including DOM manipulation and the JavaScript object model * Thorough understanding of React.js and its core principles * Experience with popular React.js workflows (such as Redux or Flux) * Familiarity with newer specifications of ECMAScript * Experience with data structure libraries (e.g., Immutable.js) * Knowledge of isomorphic React is a plus * Familiarity with RESTful APIs * Knowledge of modern authorization mechanisms, such as JSON Web Tokens * Familiarity with modern front-end build pipelines and tools * Experience with common front-end development tools such as Babel, Webpack, NPM, etc. * Ability to understand business requirements and translate them into technical requirements * A knack for benchmarking and optimization * Familiarity with code versioning tools such as Git Preferred Skills * Experience with TypeScript * Familiarity with server-side rendering * Knowledge of testing frameworks such as Jest or Mocha * Experience with continuous integration/continuous deployment (CI/CD) pipelines, * ZERO micromanagement. At Fogsphere, developers work independently under the Head of Engineering, with a focus on open discussion and professional development, where the best ideas are the ones applied. ## Description Fogsphere is a London-based innovator focused on transforming workplace and urban safety through advanced AI, Computer Vision, and Industrial IoT. Built on a principled "Edge-to-Fog-to-Cloud" architecture, our platform turns passive CCTV cameras and sensors into proactive hazard detectors, capable of identifying threats like missing PPE, fire, smoke, restricted access violations, and more-in real time and at scale. This helps organizations across industries-from manufacturing, construction, oil & gas, and healthcare to smart cities-reduce workplace accidents by up to 90%, ensure regulatory compliance (EHS), and gain powerful operational insights. Fogsphere's intuitive no-code visual workflows, hyper-scalable Kubernetes-based infrastructure, and commitment to ethical AI and privacy (GDPR compliance) make it a user-friendly yet enterprise-grade solution. About the Role We are seeking a skilled React.js Developer to join our front-end development team. In this role, you will be responsible for developing and implementing user interface components using React.js concepts and workflows such as Redux, Flux, and Webpack. You will also be responsible for profiling and improving front-end performance and documenting our front-end codebase. Key Responsibilities * Develop new user-facing features using React.js * Build reusable components and front-end libraries for future use * Translate designs and wireframes into high-quality code * Optimize components for maximum performance across a vast array of web-capable devices and browsers * Collaborate with back-end developers and web designers to improve usability * Write application interface codes using JavaScript following React.js workflows * Troubleshoot interface software and debug application codes * Ensure the technical feasibility of UI/UX designs * Stay up-to-date with emerging technologies and industry trends Qualifications * Proficiency in JavaScript, including DOM manipulation and the JavaScript object model * Thorough understanding of React.js and its core principles * Experience with popular React.js workflows (such as Redux or Flux) * Familiarity with newer specifications of ECMAScript * Experience with data structure libraries (e.g., Immutable.js) * Knowledge of isomorphic React is a plus * Familiarity with RESTful APIs * Knowledge of modern authorization mechanisms, such as JSON Web Tokens * Familiarity with modern front-end build pipelines and tools * Experience with common front-end development tools such as Babel, Webpack, NPM, etc. * Ability to understand business requirements and translate them into technical requirements * A knack for benchmarking and optimization * Familiarity with code versioning tools such as Git Preferred Skills * Experience with TypeScript * Familiarity with server-side rendering * Knowledge of testing frameworks such as Jest or Mocha * Experience with continuous integration/continuous deployment (CI/CD) pipelines What We Offer * ZERO micromanagement. At Fogsphere, developers work independently under the Head of Engineering, with a focus on open discussion and professional development, where the best ideas are the ones applied. * Opportunity to work on cutting-edge front-end development challenges in some of the largest deployments in the field. * Collaborative environment with a team of engineers based in multiple countries. * Competitive salary and benefits package. * Career growth and continuous learning opportunities. ## Related Videos - [The Pragmatic Architect: Balancing Necessity vs. Sufficiency in React Systems](https://www.wearedevelopers.com/videos/2101-the-pragmatic-architect-balancing-necessity-vs-sufficiency-in-react-systems) - [Test Driven Development with JavaScript](https://www.wearedevelopers.com/videos/222-test-driven-development-with-javascript) - [Tips and Tricks for Working with JSON](https://www.wearedevelopers.com/videos/1229-tips-and-tricks-for-working-with-json) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [React and the power of visualisation](https://www.wearedevelopers.com/videos/100-react-and-the-power-of-visualisation) - [Form Validation. The Tested Way](https://www.wearedevelopers.com/videos/314-form-validation-the-tested-way) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [Top 5 React Form Libraries for Developers](https://www.wearedevelopers.com/magazine/399-top-5-react-form-libraries-for-developers) - [The Best JavaScript Framework to Learn](https://www.wearedevelopers.com/magazine/229-the-best-javascript-framework-to-learn) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)