Meta Onsite

I recently interviewed at Meta for a Software Engineer position. My onsite interview consisted of coding, product architecture, and system design rounds. The coding rounds went well, although I may have made a few minor mistakes. The product architecture and system design questions were manageable. The behavioral round also went smoothly. Following the interview, the recruiter informed me via email that they would not be moving forward with my application, but did not provide feedback. I am interested in requesting feedback to improve for future interviews. Coding Onsite Round 1 Q1) Depth Sum Q2) Vertical Order Traversal Round 2 Q1) Root to leaf path Q2) Maximum Area of Island Product Architecture The product architecture questions were similar to those involving Twitter and Instagram feeds. System Design The system design question involved designing an auction system for Instagram.