Frontend Developer Intern

Infinity Data; Kuala Lumpur; On-site; MYR 33,480 - 55,800; Full time

Job summary

Infinity Data is seeking passionate Intern Frontend Developers in Kuala Lumpur with a strong command of the React ecosystem and modern frontend technologies. The role involves developing scalable user interfaces, utilizing advanced React features, and collaborating with cross-functional teams. Candidates must be familiar with tools like Webpack and have a good grasp of testing practices. This is an exciting opportunity to work in a dynamic environment focused on quality and performance optimization.

Qualifications

• Strong command of the React ecosystem and modern frontend technologies.
• Hands-on experience building scalable user interfaces.
• Ability to work closely with cross-functional teams.

Responsibilities

• Develop and maintain complex frontend applications using React 18+.
• Utilize advanced React Hooks and Redux Toolkit for state management.
• Optimize frontend performance across devices.

Skills

React 18+

Advanced React Hooks

Responsive Design (CSS Grid and Flexbox)

API integration with Axios

Unit testing with Jest

End-to-end testing with Cypress

Tools

Webpack

Vite

Babel

React Testing Library

Tailwind CSS

Job description

We are looking for passionate Intern Frontend Developers with a strong command of the React ecosystem and modern frontend technologies. The ideal candidate will be responsible for building scalable, performant, and maintainable user interfaces that power our web applications. You will work closely with cross-functional teams to bring product features to life, optimize performance, and ensure code quality through thorough testing practices.

Key Responsibilities

• Develop and maintain complex, responsive frontend applications using React 18+ and TypeScript.
• Utilize advanced React Hooks and Redux Toolkit for efficient state management.
• Implement intuitive client-side routing with React Router v6.
• Apply modern styling techniques using Tailwind CSS or Styled-components.
• Optimize frontend performance and ensure a seamless user experience across devices.
• Integrate APIs securely using Axios with JWT authentication.
• Collaborate with designers and backend developers to ensure technical feasibility and high-quality outcomes.
• Maintain and configure build tools such as Webpack, Vite, and Babel for efficient development and deployment.
• Develop and maintain component libraries using Storybook.
• Ensure frontend codebase is robust and testable with tools like Jest, React Testing Library, Cypress, and MSW.
• Continuously monitor and improve code quality through test coverage and performance analysis.

Requirements

React Ecosystem

• React 18+ with advanced knowledge of Hooks (useEffect, useMemo, useCallback, useContext)
• React Router v6 for modern client-side routing
• Tailwind CSS and/or Styled-components for UI styling
• React performance tuning and optimization techniques

Frontend Core Technologies

• Expertise in CSS Grid and Flexbox for responsive design
• Hands-on experience with Webpack 5, Babel, and Vite
• Axios for secure API integration with JWT authentication

Testing & Quality

• Unit and integration testing using Jest
• Component testing with React Testing Library
• End-to-end testing with Cypress
• Familiarity with Storybook for visual testing and documentation