Round 1: Basic JavaScript & I/O Questions This round tests fundamental JavaScript concepts, including data types, control structures, functions, asynchronous programming, and input/output handling. Round 2: Node.js & API Best Practices Candidates discuss their previous experience with Node.js, focusing on the event loop, asynchronous patterns, and performance. They must also demonstrate knowledge of API best practices like RESTful design, security, and input validation. Round 3: Cultural Fit This round evaluates alignment with company values, collaboration skills, adaptability, and contributions to a positive workplace culture.