Amazon Software Development Engineer (SDE) interview questions

Trees and graphs asked for better understanding on core knowledge and knowledge on the DSA is most required, so graphs are mostly focused and at the end interviewer questioning is must

Round 1 – Behavioral (LP-focused) They went deep into Amazon's Leadership Principles. Questions like: • Tell me about a time you worked under pressure with tight deadlines • What technical problem did you solve recently? • What tech did you learn and why? I answered everything using the STAR format with real examples from my projects and internships. 🔹 Round 2 – Coding + Behavioral 45 minutes turned into 1 hour • Got a LeetCode Hard-level problem and went through multiple optimizations and follow-ups. • Explained my thought process at every step what, why, and trade-offs. This round really tested clarity, communication, and stress handling. 🔹 Round 3 – Full Technical It was all coding starting with a BST problem and then adding changing requirements mid-solution. Adaptability and structured thinking were key.