4Bell Technology

Job Description

Key Responsibilities

• Design, develop, and maintain scalable web applications using React.js, Next.js, and TypeScript.
• Build reusable, maintainable, and high-performance UI components.
• Implement SSR, CSR, ISR, Server Components, and Client Components based on application requirements.
• Optimize application performance and identify/fix unnecessary React re-renders.
• Design and implement appropriate state management using Context API, Redux, Zustand, or other suitable approaches.
• Develop complex forms with robust validation using libraries such as React Hook Form, Formik, and Zod.
• Implement secure authentication and authorization mechanisms using JWT, cookies, and token refresh flows.
• Work with Axios interceptors and implement token refresh handling for expired/401 responses.
• Analyze and optimize frontend bundles, code splitting, rendering performance, and Core Web Vitals.
• Build efficient solutions for large datasets using virtualization, pagination, and infinite scrolling.
• Develop responsive interfaces using Tailwind CSS and modern CSS practices.
• Write unit, integration, and end-to-end tests to ensure application quality.
• Collaborate with backend developers, designers, QA engineers, and other stakeholders.
• Use AI-assisted development tools effectively as part of the day-to-day development workflow while maintaining code quality and engineering