Why Code in Node.js Often Gets Rejected by SoundCloud
summary
SoundCloud asks candidates to submit code and sees many Node.js submissions but very few make it to interviews because most are asynchronous procedural callback blobs that are hard to read and maintain. The hiring test changes to a socket-event server with a provided test suite; Node powers parts of production (mobile backend, event streaming) but hiring remains a bottleneck. Recommended fixes: extract the protocol from implementation, use closures to keep mutable state, and favor higher‑order functions to remove duplicated plumbing.
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chapters (7)
- 0:00Start
- 9:37new challenge
- 11:23don't get me wrong
- 22:52going old school
- 24:261st, we extract what is common
- 29:31now we don't need to pass in the kitchen Sink
- 32:26first we extract common protocol








