Senior React.js Developer

Job Summary: We are looking for an experienced React.js developer to help deliver a high-quality, production-ready web application. This role requires strong expertise in React and modern JavaScript or TypeScript, with a track record of building maintainable, responsive user interfaces and scalable front-end solutions. The ideal candidate is comfortable making sound architectural decisions, writing reliable and well-tested code, and troubleshooting performance and usability issues. Working in a fast-paced Agile environment, they will collaborate closely with product, design, and engineering teams to turn requirements into polished, dependable features. This is a hands-on role for a developer who takes ownership, communicates clearly, and delivers to a high technical standard. Senior React.js Developer Minimum Qualifications and Job Requirements: Professional Experience Senior-Level Expertise: 7–8+ years of professional experience in front-end development, including substantial hands-on experience building production applications with React.js. Full-Lifecycle Delivery: Proven experience delivering at least 2–3 major web applications from initial requirements through production release and ongoing support. Technical Core React.js Proficiency: Strong command of React.js, including component design, hooks, reusable patterns, and effective state management. JavaScript & TypeScript: Advanced experience with modern JavaScript and TypeScript, including writing clear, maintainable, and well-typed application code. Architectural Proficiency: Demonstrated ability to structure scalable, modular front-end applications using appropriate design patterns and separation of concerns. Responsive UI Development: Experience building accessible, responsive interfaces that work across common browsers, devices, and screen sizes. Security & Integration Identity & Authentication: Experience implementing secure web authentication using OAuth 2.0 and OpenID Connect. Experience with Microsoft Entra ID and MSAL is an advantage for enterprise applications. API Integration: Strong experience integrating RESTful APIs, handling asynchronous requests and errors, and coordinating API contracts with backend teams. Data Handling: Understanding of browser-based data persistence and caching, including the security and privacy considerations of storing sensitive information in a web application. Stability & Tools Testing & Quality: Experience writing and maintaining automated tests for front-end applications, including unit and integration tests. Performance Tuning: Proficiency with browser developer tools and React profiling tools to diagnose and improve rendering, loading, and runtime performance. Tooling: Experience with Git-based version control, package management, and front-end build tools, as well as CI/CD pipelines such as GitHub Actions or equivalent. Project Execution Agile Experience: Experience working in Agile/Scrum environments, managing deadlines and changing priorities, and communicating progress and risks effectively. Release Ownership: Experience supporting web application builds and releases across development, test, and production environments, including deployment coordination and post-release issue resolution. Other Responsibilities: Security & Compliance: Follow enterprise security standards when developing front-end features, particularly for authentication, token handling, browser storage, and secure communication with APIs. Release Management: Support build, deployment, and release activities across development, test, and production environments. Coordinate with QA and stakeholders to facilitate testing, feedback, and timely releases. Architectural Guidance: Collaborate with backend, design, and product teams to align API contracts, user experience, and front-end implementation with the application's architecture and requirements. Code Review & Mentorship: Conduct thorough code reviews for other contributors, promoting React.js best practices, maintainable code, and early resolution of technical debt. Risk Mitigation: Proactively identify and communicate technical, integration, and schedule risks to project leadership, and recommend actionable steps to keep delivery on track.