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Front-end Developer Interview Questions

Openers

  • Tell me about your current or last job and role?
  • Are there any specific things you're looking for in your next position?
  • Are you a specialist in any particular area of front-end development?
  • What's the last thing you learned?
  • What do you want to learn next?
  • Your most recent relevant project:
  • What were some technical (or other) challenges you faced with the project?
  • What did you contribute that seemed really easy and natural to you (something you feel you've sort of mastered)?

Team Oriented

  • Would you feel comfortable taking a support role in a project?
  • Are you comfortable taking direction on your code?
  • How important is code legibility to you? How do you make your code legible? (documentation, OO, multiple files)
  • How do you feel about working in an open-floor plan? Working on Sundays for Game Support?

Dev Environment / Process

  • How comfortable are you in the terminal? What do you do in the terminal? (ex: node, maven, git, SASS compilation)
  • Do you have experience with server-side templating? JSPs? Any favorites?
  • Do you have experience working with a CMS?
  • Git:
    • Do you have a GitHub/Bitbucket account?
    • Do you use a specific git branching model?
    • Do you know how to merge a branch and combine all its commits into a single commit? (git merge --squash ) Why would you do this?
  • Mac or PC? What browser do you develop in? How do you test your work in MAC/PC opposite browsers? Any tips?
  • What are your thoughts on QA? On AQA?

HTML5

  • {a} Are you following the development of HTML5 and CSS3? Which features are you looking forward to the most, and why?
  • {a} What is your favorite feature in HTML5 and how would you use it?
  • {b} What would you change about HTML5/CSS3 if you could?
  • {b} What is your opinion on HTML5 polyfills, such as Respond.js or CSS3 PIE? Do you lean towards polyfilling browser support, or towards a more progressive approach?
  • {b} Do you know what responsive web design is? Could you explain it?
    • The approach that suggests that design and development should respond to the user's behavior and environment based on screen size, platform and orientation.
    • The use of media queries to appropriately display a website based on screen resolution.
  • {b} Any experience developing for the mobile web?

React

  • Are you familiar with React?
  • Are you familiar with the approach of inline-styling and its benefits and shortcommings?
  • {a} Do you JSHint your code?
  • {b} Do you have experience with AMD? Can you explain how you've used it in a project?
    • Asynchronous Module Definition
    • Specifies a mechanism for defining modules such that the module and its dependencies can be asynchronously loaded.
  • {b} What are some tips to optimizing your JS/jQuery code?
    • A: Open-ended. Caching variables, OO-approach, chaining, string concatenation, foreach optimization…
  • {b} Do you have any favorite or preferred JavaScript frameworks or utilities that have contributed to your evolution as a developer?
    • e.g., RequireJS, Backbone, etc…
  • {b} Is a reverse for loop faster than a regular for loop?
    • A: Yes.
  • {c} Explain the difference between the JavaScript call and apply functions.
    • Call: Requires arguments to be explicitly passed
    • Apply: Arguments are passed in as an array
  • {c} What are your thoughts on object oriented patterns in JS? Do you use any?
  • {c} Have you heard of "defensive programming"? (A: Ensure the continuing function of a piece of software in spite of unforeseeable usage of said software.)

Closer Questions

  • What browser do you develop on?
  • Mac or PC? /
    • If Mac how do you dev for IE?
    • If PC how do you dev for mobile Safari?
  • If I asked you "what browsers support canvas / or what browsers support [some-html5-feature]?" How would you find the answer? (A: Caniuse.com?)
  • Tabs or spaces?
  • Semicolons or ASI?
  • Favorite website that showcases HTML5?
  • Do you have any web peers/heroes you look up to?
  • Why do you want to work at NFL?
@potench
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potench commented Feb 25, 2014

Topics to consider:

  • SEO knowledge / approach
  • walk through highlights (challenges, successes) of some current work

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