My craziest interview prep was for the role I just started last week. I applied to AWS and forgot about it, a month later I got invited to do a phone interview followed by a 5 hour on-site loop

I had just 4 days to prepare while already working full-time so I basically didn’t do anything after work for those few days other than cramming through over 50 hours of content on ds & algo, linux, networking and scalable system designs.

It helped that I’ve been working as a software engineer for many years so I just needed to review what I already knew