React.js Developer Requirements:

- Bachelor's degree in computer science, information technology, or a similar field.

- Previous experience working as a react.js developer.

- In-depth knowledge of JavaScript, CSS, HTML, and front-end languages.

- Knowledge of REACT tools including React.js, Webpack, Enzyme, Redux, and Flux.

- Experience with user interface design.

- Knowledge of performance testing frameworks including Mocha and Jest.

- Experience with browser-based debugging and performance testing software.

- Excellent troubleshooting skills.

- Good project management skills.