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Machine coding

The brief an interviewer would hand you, then the solution one stage at a time — requirements, the states, the code, and the trade-offs you say out loud. Filed by the round you have been scheduled for, not by library.

2 problems2 rolesBookmarks

Frontend

1 problem

0 of 1 done

  • Build a typeahead search box60 min

    We have a search endpoint and a text input. Wire them together the way a product would ship it: results appear as the user types, the list is usable from the keyboard, and a slow response can never overwrite a newer one. Start from an empty component and talk through the trade-offs as you go.

    5 stages · 60 min · React · TypeScriptmedium

Backend

1 problem

0 of 1 done

  • Rate-limit an API to 100 requests per minute45 min

    Our public API is being hammered by a handful of clients. Add a per-key limit of 100 requests per minute in front of it — correct under concurrency, correct across several app instances, and honest with the caller about what it did. Start from an empty middleware file and say what you are trading away as you go.

    5 stages · 45 min · Node.js · TypeScriptmedium

Nothing written yet

  • Full-stack