Node.js Interview Prep

Node.js / backend interview questions for freshers and experienced developers.

Sections

• Level 1 – Event loop, modules, callbacks, promises
• Level 2 – Express, middleware, REST APIs, error handling
• Level 3 – Scaling, clustering, performance
• System Design Basics – API design, auth, logging, queues

Each folder will have questions, short answers, and small code examples.