Engineering / College · Software Engineering

Node JS Interview Questions - 3 Years Experience

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This document contains a comprehensive set of Node.js interview preparation questions specifically designed for candidates with approximately three years of professional experience. It covers essential concepts such as the event loop, asynchronous programming, callbacks, promises, async/await, error handling, streams, buffers, middleware, REST APIs, authentication, database integration, performance optimization, and security best practices. The questions are intended to assess both theoretical understanding and practical problem-solving skills. They also include scenario-based questions that evaluate a candidate’s ability to debug issues, optimize application performance, handle concurrent requests, and design scalable backend services. This preparation material is suitable for developers looking to strengthen their technical knowledge, prepare for intermediate-level technical interviews, and demonstrate their ability to build, maintain, and optimize production-ready Node.js applications.