Amazon Backend Developer (SDE II, Mid-Level) Interview Preparation Guide

The interview process for a Mid-Level Backend Developer (SDE II) at Amazon typically consists of 6 stages spanning 4-6 weeks. It begins with a Recruiter Screen, followed by a Technical Phone Screen (or Online Assessment). If successful, you proceed to a 4-round Virtual Onsite Loop. The SDE II loop heavily indexes on both technical depth (Data Structures, Algorithms, Object-Oriented Design, and System Design) and behavioral fit. Uniquely, Amazon dedicates 20-30 minutes of EVERY interview round to behavioral questions based on their 16 Leadership Principles (LPs). You must answer these using the STAR method.