The first round was a coding challenge and it was quite easy. Anyone with practice and basic programming skills can solve the questions. Looks like the initial coding challenge is the same for everyone.

Bizarre and disrespectful. No coding questions asked, but he did ask me to speak a lot in detail about my project at my last job 2 years ago, down to details in the implementation that I could barely recall. Interviewers should respect or realize that other companies have NDAs and it's icky to press for super fine-grained technical details, but he kept asking. He also challenged things my company did and acted like he knew better than the people who actually worked there, and I was caught so off-guard I only realized after the interview how incorrect he was. For instance, I brought up the technical challenge of loading "50 2-minute videos 1080 p videos at 60 fps" from disk to heap memory." He very confidently told me that we could've just loaded all frames of all~ 50 videos at once into a very big array and that any personal computer which had 32 GB of RAM was "more than enough". There's a difference between RAM and heap memory, but even assuming I could allocate a 32 GB array in C++ without problems, the *actual* amount of memory required would've been 4 bytes/pixel x (1920×1080) pixels/frame x 60 frame/sec x 60 sec/min x 2 min x 50 videos = 2985.984 GB (This was just one of a few instances where he was like "maybe you guys should've tried this".) Also, I just got ghosted with not follow up interview. Was a waste of time, and it's sad they have interviewers who can't do math :(