I have interviewed here twice, both times had a very similar and positive experience. They give you all the information you need to prepare, including the system design question.
They like to ask multi-part coding questions that build on top of one another. They are looking for code fluency, debugging, clean code, code that compiles and runs, rather than the most optimal solution.
The questions aren't hard as long as you know your basic data structures and object-oriented design in your language of choice. Personally, I'm not very good at finding the most ~optimal~ solution right away but I'm pretty good at communicating so these questions were not difficult to me, since they are pair programming and the interviewer will help you out when needed. They don't care about the most optimal solution but you should still be able to tell them the runtime and memory complexity.
For the behavioral interview make sure you know how to talk about your past experience and projects well, and you will do fine.
My only complaint is that the recruiting turnaround time can take a while. The first time, they took three weeks from my onsite to tell me that they are extending an offer. By that time I had already signed another offer. This time I made sure to give them deadlines.
I think the technical bar at Square has gotten worse over the couple of years unfortunately, if you ever get the feeling that you're smarter than your interviewer
Interview questions [1]
Question 1
The interviewers write their own questions so it's not something you can study ahead of time Practice object oriented design questions. Nothing is harder than LC hard. It's usually LC Easy first part, LC Medium at most for the subsequent parts.
Inital take home, followed by extension interview, followed by a coding challenge, followed by system design interview.
The whole process took 3 months!
The interviewers are usually really nice and want you to do your best.
The interviewer was nice, and he is friendly and willing to give hint, the question has 2 follow-ups, it was hard to complete in time. The question was not a typical LeetCode
Phone screen and then a full day of interviews. 3 pair programming challenges, a system design review and a prior experience interview. There was also an onsite lunch with a person from the company.
Interview questions [1]
Question 1
To design a hotel booking system. Pick any part (backend, frontend, database, api etc) and deepdive into that, explaining the decisions along the way.
