Hire remote enterprise ReactJS developers

As a React developer at [Company], you will work primarily in JavaScript and React JSX to build fast, feature-rich websites. Your responsibilities will include:

• Working with the product team to develop new features and fix issues on the web-based products
• Participate in code reviews for your own and others’ code, helping troubleshoot and fix issues
• Keep up with changes to React, JavaScript, and other related web technologies
• Finding creative solutions to problems with front end design implementation

Requirements:

• Extensive experience with JavaScript and React
• The ability to work together to solve problems with a group
• Strong problem-solving skills
• Knowledge of modern software development practices, including agile methodologies and continuous integration

Question 1: How would you create a button counter in React?

This question is React-specific and helps test for basic state management. Most solutions should be something like this:

There can be variability in these answers, so the best thing to do is to run it yourself and make sure the counters function properly.

Question 2: How would you load data from an API on the first load of a page using React?

This is a good test of how the interviewee understands component mounting, initial page rendering, and how to use useEffect() with side effects.

In this example, the component fetches data from a REST API when it is first rendered. The useEffect hook is used to initiate the fetch and update the component state with the response data. The second argument to useEffect is an empty array, which tells React to only run this effect once when the component is first mounted.

Question 3: How would you create a simple login form in React?

This question is intentionally more flexible than other questions. Here you can see how interviewees structure their HTML/JSX and React code. Here is an example of a correct answer:

Once again, there are a variety of solutions to this. A good solution would get the job done using React features well, but the best solutions are ones that use semantic form elements and are designed to work with and without JavaScript (like the one above).

Question 4: How can React.memo() optimize React component rendering?

This question helps show a more in-depth knowledge of React and performance optimization. The correct answer should be that React.memo() checks whether the props of a component have changed before re-rendering it, meaning that if the parent component is re-rendered frequently and the child component’s props do not change as much, the rendering work React has to do will be reduced.

Beware of answers that say you should never or always use it. It has a specific use case and placing its usefulness on one extreme or the other shows a lack of knowledge of advanced React optimization.

Question 5: What are React portals for?

Portals are rather advanced, so this helps to see how much advanced React the interviewee knows (this is unrelated to performance optimization, unlike the previous question). The correct answer is that portals allow React components to render child components outside of the parent component. Another good thing an interviewee might add is that React portals should only be used when necessary, as they can lead to bad practices.

Developers in the Torc community set their own rates. The three primary factors that determine the cost of a Remix developer are:

1. Experience - Everyone would prefer a senior developer but, let's be honest, 10+ years of experience isn't always required. If you consider the work the developer will be doing and the amount of support within your existing team they'll have access to, you might be better served with one or two junior Remix developers over one senior developer.
2. Skill mix - Marketplaces operate under normal supply and demand dynamics. Developer rates often increase with more niche, complex, or in-demand skill requirements.
3. Geography - While remote work has flattened the geographic pay disparity to some degree, where your developer lives does factor into their cost. In 2022, the median rate for Torc developers in Latin America was 29% lower than developers in the U.S., Canada, and Western Europe, while the median rates in Eastern Europe and Asia/Oceania were 24% and 40% lower, respectively.

Torc simplifies the hiring process for you and for developers, and it all starts with letting us know what you're looking for. If you're a new Torc customer, schedule a meeting with our sales team to discuss your needs and get the paperwork squared away. If you're an exiting customer, you can create a new job opportunity directly in the Torc platform.

Once the job is finalized, our AI matching algorithm and team of technical talent specialists will get to work identifying great candidates from the Torc community. You can review their profiles and assessments, interview shortlisted candidates, and hire the perfect developer - all in under a week.