17 questions and 21 skills to help you find and hire the perfect React Frontend Developer

React Frontend Developer

A three-stage interview process for assessing junior, mid-career, or senior level frontend developer candidates with a focus on React. This flow includes interviews for evaluating soft skills, React skills, as well as architecture skills.

Interviews

  1. Frontend Problem Solving
  2. Frontend React Technical
  3. Frontend Soft Skills

Evaluated skills

  • React
  • Communication
  • Engineering
  • Engineering Management
  • JavaScript Frameworks
  • JavaScript
  • Software Development
  • Teamwork
  • Agile Product Development
  • Agile Software Development
  • Analytical thinking
  • API Design
  • Code Review
  • Critical Thinking
  • CSS
  • CSS Frameworks
  • Eslint
  • Product Lifecycle Management
  • Team Leadership
  • User Experience Design (UX)
  • Web Design
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  1. Frontend Problem Solving

    Intended as a back and forth, assessing their ability to breakdown requirements and develop a working plan.

    1. Question #1
      15 minutes
      You are asked to implement a registration and login page. What considerations do you need to take into account when designing and implementing this functionality?
      Anchor tag to question
      1. API Design
      2. User Experience Design (UX)

      Evaluation criteria

      1. They should mention what are the specifications for login requirements, such as OAuth, business emails, etc.
      2. They should mention auxiliary pages such as change password, forgot password, and forgot username.
    2. Question #2
      5 minutes
      You are in a position where you can make architectural choices. Two developers are arguing over an arbitrary linting rule; how do you decide which rule to implement?
      Anchor tag to question
      1. Engineering Management
      2. Team Leadership
      3. Eslint

      Evaluation criteria

      1. We are looking for an understanding that business needs dictate developer standards
    3. Question #3
      20 minutes
      How would you handle the deployment of a modern web app? From your local machine to the web? Feel free to use your dream technologies. IE: Marketing website with blog, app, phone app, interaction with backend.
      Anchor tag to question
      1. Analytical thinking
      2. Critical Thinking

      Evaluation criteria

      1. If they need an example, ask them to recreate Uber
      2. Have them identify their blind spots, and where they excel
      3. Describe technology choices for marketing website, SPA, and identify what other components would be necessary
  2. Frontend React Technical

    A React interview, focused on assessing the candidates knowledge of the React framework and it's ecosystem.

    1. Question #1
      10 minutes
      How has your experience with React been so far? Have you enjoyed working with it? What are the pros and cons compared to other SPA libraries, why do you like React?
      Anchor tag to question
      1. React
      2. JavaScript Frameworks
      3. JavaScript

      Evaluation criteria

      1. Open ended, what problems React solves and how it differs from it's competitors
    2. Question #2
      8 minutes
      What is the difference between the class components and functional components. Which is now considered best practice and why?
      Anchor tag to question
      1. JavaScript Frameworks
      2. React

      Evaluation criteria

      1. Shared stateful logic with hooks
      2. They should mention the lifecycle and how it is accessed in both
    3. Question #3
      6 minutes
      Can you talk about some of the most important hooks? What are they, and what are they used for?
      Anchor tag to question

        Evaluation criteria

        1. useState - Handles state in components
        2. useEffect - side-effects and managing lifecycle in components
        3. useContext - Handles state across components
      1. Question #4
        6 minutes
        What are the most common approaches for styling a React application?
        Anchor tag to question

          Evaluation criteria

          1. CSS-in-JS, classes, inline, preprocessors
        1. Question #5
          6 minutes
          What is Next.js, what is it used for? When would you use it? When would you not?
          Anchor tag to question
          1. JavaScript Frameworks
          2. React

          Evaluation criteria

          1. Next.js is a React framework that provides out of the box SSR, routing, bundling, among other features.
          2. We want the candidate to understand it's usecases. SEO, speed, etc.
        2. Question #6
          6 minutes
          What is in your React 'toolkit'? What packages are useful? How are you deploying and creating your React apps?
          Anchor tag to question
          1. JavaScript
          2. React

          Evaluation criteria

          1. Open ended question, we're looking for interest in React and it's ecosystem.
          2. Such as CRA, Formik, component libraries (MUI, Ant design), State management (redux, mobx), react-router
      2. Frontend Soft Skills

        A developer soft skill interview, focused on assessing the candidates teamwork and process related skills.

        1. Question #1
          5 minutes
          What excites or interests you about coding? What technologies do you find interesting?
          Anchor tag to question
          1. Software Development
          2. Engineering

          Evaluation criteria

          1. Clear preferences and aversions reflect experience
        2. Question #2
          5 minutes
          Tell us about your preferred development environment, what tools you are comfortable with, and what tools you want to learn?
          Anchor tag to question
          1. Software Development
          2. Engineering
        3. Question #3
          5 minutes
          Can you describe your workflow when you create a web page?
          Anchor tag to question
          1. Web Design
          2. Agile Product Development
        4. Question #4
          3 minutes
          If you jumped on a project and you had a different opinion about linting rules or code formatting, how would you handle this in regards to your fellow team members?
          Anchor tag to question
          1. Communication
          2. Engineering Management
          3. Teamwork
        5. Question #5
          5 minutes
          What aspects are essential for a good code review? How do you make sure you are providing constructive criticism?
          Anchor tag to question
          1. Communication
          2. Code Review
          3. Teamwork
        6. Question #6
          8 minutes
          You are assigned to a ticket, and you are asked to gather information, estimate, and solve it. What does this process look like for you?
          Anchor tag to question
          1. Communication
          2. Agile Software Development
          3. Product Lifecycle Management
        7. Question #7
          5 minutes
          Do you have any opinion on CSS methodologies, frameworks, or libraries? How do you like to style your pages and apps?
          Anchor tag to question
          1. CSS Frameworks
          2. CSS
        8. Question #8
          10 minutes
          Are there any questions you would like to ask us about our development processes or technology choices?
          Anchor tag to question
          1. Engineering
          2. Engineering Management
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