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Tech talent acquisition: A guide to hiring React.js developer

Recruitment | 6 Min Read

Tech talent acquisition: A guide to hiring React.js developer

About React.js

React, also popularly known as React.js, is an open-source JavaScript library utilized to build user interfaces. It is widely known for building single-page and mobile applications. Businesses also utilize React.js to create large-scale web applications that can update and render enormous amounts of data without reloading the page. Hence, creating robust and complex products while still being simple to integrate into existing apps.

React.js allows businesses to build reusable user interface (UI) components that are easily combined to create more complex interfaces making them quick, scalable, and user-friendly.




Why should companies choose React in 2023?


React.js has a large community of active users. This pool of users makes it substantially convenient for companies to find experienced React.js developers and plenty of resources for their projects.

Ease of use:

React.js is simple and intuitive in its design. It is convenient for developers to learn and use the framework.


Web applications built on React.js are fast and responsive. It improves performance and offers developers quick rendering, a substantial time saver.


The reusability of React.js UI components speeds up the development process. Additionally, combining different UI components to create complex user interfaces allows businesses to maintain and update their applications over time easily.

Cross-platform development:

React Native framework that utilizes React.js allows developers to engage in cross-platform development for iOS and Android using the same codebase, saving time and resources.


Roles and responsibilities of a React developer

  • Developing and implementing web applications: Creating web applications using React includes writing clean, efficient, and maintainable code to develop and implement web applications.
  • Designing user interfaces: Designing components that highlight information and make interactive interfaces.
  • Collaborating with other developers and stakeholders: Communication is crucial to collaborating with other team members and taking constructive feedback.
  • Debugging and troubleshooting: Identifying and fixing errors is necessary to ensure the application is error-free.
  • Staying up to date with industry trends and technologies: Staying updated with the latest technologies and trends helps adopt new features and functionalities quickly.
  • Writing automated tests: Writing automated tests to ensure the application functions smoothly is crucial. Developers should have experience with testing frameworks, such as jest and enzyme.
  • Optimizing the application’s performance: Clear understanding of web performance optimization techniques, such as code splitting, lazy loading, and caching.


Technical skills requirements of a React developer

  • A thorough understanding of JavaScript concepts and features.
  • Familiarity with React core components, pros, state, and lifecycle methods.
  • Knowledge of HTML, CSS, and responsive design.
  • Experience working with good version control tools, like Global Information Technology (GIT).
  • Familiarity with React libraries and tools like redux, React router, and Axios.
  • Working knowledge of testing frameworks, like jest or enzyme.
  • Skills in learning and adapting new technologies and frameworks as needed.


Essential aspects to consider while hiring a React developer

  • Identifying the necessary skills and experience
  • Establishing project timelines
  • Estimating project costs
  • Managing project risks
  • Aligning project goals


Top React languages, libraries, and tools to be aware of when hiring React developers

ReactJS programming languages and libraries:


  • JavaScript
  • JSX
  • Redux
  • GraphQL
  • TypeScript
  • Styled-components
  • React Router


React JS programming tools:


  • React Developer Tools
  • Redux DevTools
  • Create React App
  • React Storybook
  • ESLint
  • Webpack
  • Babel
  • Jest


How to assess React developers during hiring?

Hiring managers can utilize coding and other pre-employment assessments to gauge candidates’ technical and cultural fitment. While a Coding Skills Test offers a wide range of simulators to evaluate technical proficiency, pre-employment assessments help measure personality traits, behavior, aptitude, and domain-specific skills.

Assessing technical skills

The first step to hiring top React developers is assessing candidates’ technical skills by reviewing their previous work experience and projects and asking questions about ReactJS, JavaScript, HTML, CSS, and other relevant technologies. This stage can be accompanied by a coding challenge to evaluate tech skills.

Evaluating soft skills

Assessing candidates’ soft skills, like communication, problem-solving, critical-thinking skills, and ability to work under pressure to meet deadlines, are important indicators of their nature of work and fitment.

Assessing cultural fit

Every business wants to hire developers with similar values and a clear understanding of business needs. Therefore, evaluating candidates’ cultural fitment ensures high productivity and lower retention.

Checking references

Verifying candidates’ skills and expertise, job titles, dates of employment, past responsibilities, and validity of their complete employment history through references and a thorough background check helps in making a suitable hiring decision.


Interview questions used to hire React developers

  • What are the features of React.js?
  • What are synthetic events in React.js?
  • What is the difference between Hooks and Redux?
  • How can you avoid component re-rendering?
  • Why use React.js instead of other frameworks, such as Angular.js?
  • How to enhance the accessibility of a React application?
  • How is React different from other JavaScript Frameworks?
  • List some common approaches to styling a React.js application
  • How would you optimize performance in a React app?


Advantages of hiring a React developer

Fast and efficient performance:

React is known for its fast and efficient performance. It uses a virtual Document Object Model (DOM), which helps speed up the process of rendering changes to the user interface, providing a seamless user experience.

Ease of use:

React uses a component-based approach to web development, making it easy for developers to build complex applications by reusing components. It leads to an efficient development process with reduced time and effort in creating an application.

Scalability and lower maintenance costs:

React applications are easier to maintain and update than traditional web applications. React's modular design makes it easy for developers to change specific application parts without affecting the rest of the code, while reducing costs and remaining relevant. Therefore, it is easier to build complex applications with React.

Seamless user experience:

React applications are responsive, quick, and designed to provide a consistent and intuitive user experience for long-term usage.

Integration with other technologies:

React is designed to be flexible and adaptable. It can be incorporated with other technologies like Redux to help developers build more complex and sophisticated applications, remaining relevant and competitive over the long term.

Cost-effective solution:

React is an open-source technology, and it is available to businesses for free. With its large and active community of developers, companies can access a vast range of free resources and tools to build their applications.



Hiring and onboarding React developers for your business is a commitment to creating dependable, seamless, and scalable user applications.

Mercer | Mettl enables businesses to leverage a customizable online assessment platform to shortlist candidates during the hiring process. Recruiters can hire developers using the Coding Skills Test across diverse roles. Our vast library of pre-built questions and customization options allow recruiters to shortlist suitable tech talent efficiently. Further, Mercer | Mettl’s advanced coding simulators evaluate candidates’ real-world coding skills and auto-grade assessments while offering insightful reports for effective hiring.



How much does it cost to hire a React.js developer?

What is the easiest way to hire a React developer?

Is there a demand for React developers?

How to hire a React.js developer?

Originally published July 25 2023, Updated July 25 2023

Written by

Vaishali has been working as a content creator at Mercer | Mettl since 2022. Her deep understanding and hands-on experience in curating content for education and B2B companies help her find innovative solutions for key business content requirements. She uses her expertise, creative writing style, and industry knowledge to improve brand communications.

About This Topic

Hiring a coder requires HRs to go beyond conventional hiring practices and assess the candidate on both knowledge and hands-on skills. A holistic suite of assessments and simulators, used in conjunction, can simplify the technical hiring process and better evaluate programmers and developers.

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