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Node.js Developer interview questions: the 8 to ask
A Node.js developer builds APIs and real-time services in server-side JavaScript / TypeScript.
- 1.How does the Node.js event loop work?
- 2.How do you run a CPU-heavy task without blocking the server?
- 3.Promises and async/await: how do you handle errors?
- 4.How do you structure a NestJS project?
- 5.How do you secure an API (auth, rate limiting)?
- 6.How do you debug a memory leak?
- 7.What concrete benefits does TypeScript bring?
- 8.How do you test a call to an external API?
Tip: for every answer, ask for a concrete example (situation, action, result). An answer without an example is worth half.
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