React Interview Questions to Ask Before Hiring

The major pain point for recruiters is screening and matchmaking the qualified applicants from the unqualified lot. This requires a thorough interview round to be conducted to test the candidate’s suitability and expertise for the role. To do this, hiring managers must be well-prepared with a list of the most appropriate React interview questions to ask the candidates.

Before preparing the list of questions, you must be thorough with the technical terminologies related to React. The subsequent section will help you familiarize yourself with the must-know terms.

Technical Terms to Know Before Hiring Reactjs Developer

Websites and mobile apps have now become a critical aspect of the digital facet of businesses. As the market is saturated with huge competition in these services, tech recruiters are very cautious when they hire React developers. Choosing the right technology and hiring the right developers can make or break your project development success.

Thus, to ask the right React interview questions, you must be accustomed to the technical terms related to the field. Some of the standard terms that you must know are:

• React.JS workflows

• JavaScript

• Algorithms

• Data structures

• UI development

• How to modularize code in React?

• What are functional components?

• Virtual DOM

• React router, and it’s techniques

• JSX

React Basic Interview Questions

Once you are well-versed with the technical aspects of the job role that is mandatory to have, you can easily draft a list of the Reactjs interview questions to ask. Let’s look at these questions based on the seniority of the position.

Some of the React basic interview questions that you shouldn’t miss asking the freshers or entry-level developers are:

• Draft a simple HTML document sample with header information and page content.

• What is ReactJS?

• How do you intend to learn a new JavaScript library?

• What is a JavaScript callback function?

• How is ReactJS similar to other JavaScript frameworks?

• State your previous experience and biggest learnings based on real-time feedback that you received.

• State a common issue your business faces and ask the candidate to provide a solution to resolve it.

Mid-level React Interview Questions

A mid-level ReactJS developer has at least 3-4 years of experience, is highly skilled and efficient and can mentor junior developers. When hiring intermediate developers, as part of the React developer pre-employment assessment, ask the following questions:

• What is Virtual DOM and its significance?

• What are the components of React?

• What unit testing tools would you use in a ReactJS application?

• What are the advantages and drawbacks of using ReactJS?

• What is JSX and it’s similarity with ReactJS?

• What is the meaning of React components?

• What does render() do?

• What kind of knowledge do you have related to the Redux library?

• What testing tools do you use for unit testing the ReactJS applications?

ReactJS Advanced Interview Questions

An experienced senior React developer is a professional with 6+ years of experience. They should be well-versed in ReactJS and other frameworks and be able to design, upgrade, and maintain apps.

The following ReactJS advanced interview questions should be asked to ensure a candidate’s suitability:

• What kind of React patterns are you aware of?

• How active are you in the ReactJS community?

• What aspects do you look for when checking another teammate's code?

• Describe your experience working with React 16 Context API.

• Do you know what code splitting in React means? If yes, explain how a bundle is split into smaller chunks.

• What tools do you prefer to use to build a robust and competitive application?

• State a situation where you fixed an error or bug in a web application.

Conclusion

The right set of React interview questions can elicit an accurate and honest impression of a candidate. Only when you ask the relevant questions can you assess their suitability for the role. This is a key process in the recruitment funnel, and if this feels daunting to you, Uplers can be your best solution.

Eliminate all the groundwork of screening, shortlisting, and onboarding. Just interview the top 3.5% of shortlisted applicants and hire the best at 5x speed. The Uplers pre-vetting process filters out 96.5% of unqualified candidates and thus saves you the extra effort. They will

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