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The Code Review Interview: I Hand Candidates a Broken PR

The candidate had thirty minutes and a 180-line pull request. Sixty seconds in, they said: "Line 43, this variable should be camelCase." I wrote it down. Not because they were wrong.

  • Candidates review a broken 180-line PR in 30 minutes
  • Six issues seeded in PR, ranked by production impact
  • Tests real job skills: code reading, risk judgment, and feedback

The metric I designed was the same number twice

I set out to build one metric. Halfway in, the algebra told me it was a number I already had. This is what that looked like, what I built instead, and the three things CoinMarketCap's DEX API does…

  • Author designed metric to distinguish trader types in DEXs
  • Discovered two fields were dependent, not independent
  • Maker address proved more reliable measure than metric

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