Senior Frontend Developer (React / Next.js)

Design, develop, and maintain production web applications using React and Next.js Own frontend architecture and technical implementation for new features and enhancements Build reusable, scalable, and well-structured component libraries Develop strongly typed applications using TypeScript Integrate REST APIs, including authentication, authorization, error handling, loading and retry states, and data transformation Implement application state management using Redux Build responsive, accessible interfaces using Sass/SCSS and modern CSS Build screens with full localization and RTL layout support. Development and deployment are carried out in English; Arabic content is delivered through a translation mapping layer Own features end to end technical design, development, testing, deployment, and production support Triage and resolve reported defects, and participate in incident investigation and root-cause analysis Participate in the out-of-hours and on-call support rota for production issues Work from Azure Boards and maintain a clean delivery audit trail in Azure DevOps Review and improve existing code, architecture, performance, and maintainability Participate in code reviews and maintain engineering standards Write and maintain unit, integration, and end-to-end tests Collaborate with backend engineers, mobile engineers, UI/UX designers, QA, and product stakeholders

Desired Candidate Profile

Bachelor Degree in Computer Science or a relevant field. Minimum 4 to 5 years professional frontend development experience Strong hands-on experience with React.js and Next.js Advanced JavaScript and TypeScript Strong understanding of React hooks, component architecture, design patterns, and frontend application architecture Strong experience with Redux, including reducers, actions, selectors, middleware, and asynchronous state management Strong experience integrating and consuming REST APIs Strong grasp of asynchronous JavaScript, Promises, async/await, and API error handling Strong HTML5, CSS3, Sass/SCSS, and responsive development Proven experience building and maintaining large or complex web applications Strong understanding of authentication, authorization, session management, and secure API integration Experience integrating single sign-on using Microsoft Entra ID Working knowledge of OWASP Top 10 and common web vulnerabilities XSS, CSRF, injection, insecure data exposure, broken access control Secure handling of authentication tokens, cookies, browser storage, and sensitive data Strong Git experience; familiarity with code review, CI/CD, and production deployment workflows Strong debugging and analytical skills, and the ability to take independent ownership of technical problems Willingness to participate in an out-of-hours support rotation