Software Engineer at Microsoft

The candidate interviewed for a Software Engineer role on the Experience + Devices team, focusing on Copilot integration within Microsoft 365. The process included an initial screening followed by a two-day, four-round final loop. Notably, all final-round interviewers were principal-level, and most rounds, including system design and hiring manager interviews, heavily emphasized coding challenges. One particularly challenging round involved a low-level file system design prompt requiring class implementation and multiple use cases within a tight timeframe.