Give a 30–60 min technical presentation • Go deep into what you personally did • Defend design choices, tradeoffs, and results • Get interrupted with technical questions They are testing: • Technical depth • Ownership (what you vs the team did) • How you think under scrutiny • Communication clarity Few 1:1 panels (technical + personality) Technical rounds: • Deep-dive into your domain • Whiteboard problem solving • Debug scenarios • System-level tradeoffs