Just finished the interview for Senior Backend Engineer here. I think I have better experience than most of the people here. First round was online coding to fix some tests, it's pretty easy and straightforward, they guy I had interview with was friendly and easygoing. I found a bug in the test though, maybe that's a bonus point for me. Second round was behavior questions/ past projects deep dive. This round was fairly easy too, I think the point is to show them the tech stack you had used and some "Tell me about a time when......" type questions. Last round was onsite System Design interview. It was to design a system that can load the file from the bank and do some process (points calculation, send notification to users, write to database.....etc). Basically just like those batch systems in the bank which runs every night. This round was ok, but I felt the interviewers were not really familiar with the question because they had to check the computer multiple times. They complained more than once why they need to put some weird constraints/requirements for this system. I think they can only ask candidates to design this system, maybe they have to follow some policies or they don't know how to design other types of systems. Overall, I think the interview process was okay, recruiter was responsive although he forgot to send me invitation for second round and disappeared after the last round. That's ok with me because I think the problem is they just don't have enough HR to handle all the applicants. They are just a startup so everything is still not there 100%. Can't really blame them for that. They still need a lot of work to do in order to improve the whole process. Last thing is their office, I was really curious about their office after reading all the comments here. It is true, oh boy that was the smallest office I've ever seen, with only one super slow elevator (the elevator on Titanic was probably faster than this). The office is like 6 train during rush hour and local gym at 5pm. It's packed, crowded and chaotic. I even saw one person sitting in front of the elevator because there were no seats in the office (I like it though, very NYC homeless style). They mentioned they are converting the first floor to a coffee shop, I was like girl you need more desks and chairs, not coffee tables. It's just sad that all these people have to work in this environment. I really wish them to have a bigger office soon.