Senior React.js Frontend Engineer

About ProxifyAt Proxify, a Swedish tech company, we connect talented tech professionals with long-term remote opportunities at top companies across the USA, Sweden, Germany, the Netherlands, and beyond. Since 2018, we’ve helped 5,000+ developers land remote roles with 1,200+ companies worldwide. Role overview We are looking for Senior Software Engineers with strong React experience to join our fast-growing Network. You will play a key role in building modern web applications, collaborating with cross-functional teams, and helping shape the future of user experiences across various platforms. Important: You must be based in any country in EMEA to be considered for this position. Key responsibilities Build and develop modern, high-performance web applications using React and the latest frontend technologies.Create fast, responsive, and user-friendly interfaces that work seamlessly across all devices.Design reusable components and help shape the frontend architecture.Write clean, maintainable, and well-tested code following best practices.Identify and fix bugs while continuously improving the user experience.Work closely with designers, product managers, and backend developers to bring ideas to life. Must-have 5+ years of demonstrable, production-level experience architecting and developing applications with React.js and its surrounding ecosystem of libraries and toolsDeep knowledge of JavaScript (ES6+), HTML5, CSS3, and modern CSS-in-JS or preprocessor solutionsExperience with state management libraries (e.g., Redux, Zustand, Recoil) and understanding of their trade-offsFamiliarity with modern build tools like Webpack, Vite, or equivalentStrong understanding of RESTful APIs, asynchronous operations, and frontend-backend integrationExperience with unit and integration testing (e.g., Jest, React Testing Library)Good English communication skills and the ability to work in an agile environment

Nice-to-have Experience with backend technologies, databases, cloud services, and any tech stack beyond JavaScriptFamiliarity with server-side rendering frameworks like Next.js or similarHands-on experience with TypeScript and building modular, reusable components using design systems, component libraries, and scalable UI patternsUnderstanding of CI/CD pipelines and deployment workflows 🌍 Why Join Proxify? 100% remote opportunities.Work with top international companies.Long-term engagements.Flexible part-time or full-time setup.Apply once → access multiple opportunities.Skip traditional recruitment barriers through personalized matching.Work from anywhere and access a truly global network. 👉 Interested? Apply and join our global network of technology professionals.