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      Frontend Engineer Interview

      11 Oct 2018
      Anonymous interview candidate
      San Francisco, CA
      No offer
      Negative experience
      Average interview

      Application

      The process took 2 weeks. I interviewed at Affirm (San Francisco, CA) in Oct 2018

      Interview

      Step 1: Initial phone call with recruiter as expected. Step 2: Take-home coding challenge. The challenge was to build a form in React, with validation and a nice UI. Time-boxed at 90 min, which wasn't very realistic, but also not really enforced. A good challenge, in that it's very relevant and similar to typical frontend work. Step 3: Technical phone screen. Seemed redundant…I just submitted code, why the need to see more? Format was dumb: an awkward engineer presented the problem via CoderPad, then was completely silent while I solved it (even muting the mic for much of the time). This confrontational style is very off-putting, and made me question if I even wanted to continue if this is representative of their engineering culture. The problem was to write an interpreter to evaluate math in a nonsense format string. I'm not a quick algorithm solver, so it took me a bit, but I came up with a relatively clean solution that solved all test cases. The interviewer then wanted to know the exact time complexity of my solution; given that such exact analysis isn't relevant to most frontend work, I gave the answer of "I don't know, it's not great because there are nested loops, but I'd google it if I needed an exact answer". The interviewer (a backend engineer) didn't like that answer. 🙄 Rejection email came the next day, as expected. I had already mentally written off the company from their outdated, confrontational interview process.

      Interview questions [2]

      Question 1

      Create a credit card form in React, given a wireframe design and certain scope-limiting assumptions. Include validation and UX niceties.
      Answer question

      Question 2

      Write an interpreter to evaluate strings of nonsense math notation, respecting order of operations indicated by (possibly nested) parentheses.
      Answer question
      2
      avatar
      Affirm response
      7y
      Thanks so much for taking the time to leave a review. We want all candidates interviewing at Affirm to have a positive and engaging experience, and we’re sorry to hear your time with us did not reflect this. We recognize that our interviews can be rather thorough, and appreciate you taking the time out of your day to learn more about us.

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