I applied online. I interviewed at Block in Oct 2025
Interview
In the interview process, there are 3 rounds of technical interviews. I got through 2 of the 3 interviews, which were both simple object oriented design challenges. Interviewers can be hit or miss.
3 technical interviews, asking easy LC questions at first, then progressing to medium, around 60 minutes each. They reached headcount before I even finished the process, since it took so long.
3 rounds of technical interviews; some were closer to lc mediums and others were more class implementation focused; follow-ups were also pretty standard and asked about time/space complexity; for my internship cycle, you had to pass all 3 techs (perfect working solution by the end) to get an offer
Online assessment with three LeetCode medium problems to be solved in 1 hour and 10 minutes. Then, there were three 1 hour technical interviews, all in a pair-programming format (for each interview, questions were incremental, like 1a, 1b, etc) Overall, one of the best interview I've ever done, interviewers and recruiters were supeer nice and helpful.