Technical interviews were interesting. If you know what you are doing you will have no problem figuring out a solution. Technical and system questions were issues that Monday ran into and using some logic it was easy to figure out. I did not find the questions they asked had to deal with the position directly, but would give the company an overall assessment of your ability to think. Interviewers were friendly, open and easy to talk to. The process was spread out over 3 weeks. The technical interviews were a positive experience, they actually seamed happy when you gave a correct answer and were rooting for you.

The HR interview on the other hand was not a good experience. Last interview was HR, it was a weird unprofessional interview. It was had to understand what they were after. They spent 15 minutes of the 45 minute interview asking about my first job which was over 14 years ago! The next day i got a phone call saying i was declined because they were concerned i won't fit in with such a "high pressure" workplace as Monday.com

Simple algorithms - need to know how to calculate big O and simplify solution complexity.

System design - Not whole system but optimize part of system design to solve specific bugs with msgs pub sub.

Personal questions - Practice behavioral interviews, you never know what surprise HR is setting for you!