The process is quite long, but you get informal feedback almost immediately after each interview, which gives an invaluable peace of mind. - First intro chat with recruiter. - 60mins tech interview with two engineering managers where they ask about your experience and have you solve a very simple tech problem. - 60mins interview on anything that's iOS-related: questions about Swift, algorithm complexity of Swift data structures, UIKit, AutoLayout, etc.. - 60mins interview on a system design: you're told what the system is before the interview, so you can prepare; the interview is just you presenting the system design and two senior engineers asking questions or challenging your choices. - 120mins "Topgrading" interview: you're basically asked to tell the interviewers your entire life, starting from high school until today; questions around why you chose a specific educational institute, why did you leave each job, what have you learned in each position, where do you want to go in the future, and so on. - tech case: you're invited to make a PR to a GitHub project to demonstrate your abilities; after your send in your PR, they schedule a quick 20mins interview to discuss your project.