I recently participated in the interview process for a technical position at Amazon AWS, which consisted of three main stages: an Online Assessment, a Phone Interview, and an Onsite Loop. The Online Assessment included two algorithm problems to be completed within a limited time, evaluating my coding skills and problem-solving ability. I completed the tasks on time and passed the initial screening. The Phone Interview was conducted by a senior engineer and focused on one medium-difficulty algorithm question, along with a brief discussion of my past project experience. The interviewer paid close attention to code readability, edge case handling, and time/space complexity. I then moved on to the Onsite Loop, which comprised four rounds of interviews: Coding: Two rounds of algorithm questions, comparable to medium-to-hard level LeetCode problems. Clear logic, optimized solutions, and comprehensive test coverage were emphasized. System Design: A distributed systems design question, where I was asked to outline the system architecture in terms of functionality, scalability, availability, and fault tolerance. Behavioral: This round was based on Amazon’s Leadership Principles, especially "Ownership", "Dive Deep", and "Deliver Results". I shared detailed examples from my past experience to demonstrate alignment with these values. Operational Excellence: A discussion centered around production system reliability, monitoring, and automation practices, assessing my understanding of building and maintaining robust systems. The entire process was fast-paced and comprehensive, reflecting the professionalism and high standards of Amazon’s interview system. Regardless of the outcome, this experience gave me valuable insights into my technical strengths, system design skills, and communication effectiveness.