I was contacted by a Square recruiter a few weeks (4-5) after I had applied via their careers site. We had the standard recruiter call to ensure I was still looking for work that matched their openings and we moved onto a technical phone screen interview. The phone screen was just over an hour, standard pair(ish) programming on a simple problem with the interviewer guiding the problem to ensure nothing was missed, and time to answer questions at the end. After the phone screen I was invited for an on site. The on site interviews consisted of multiple problems, grouped together by type across the entire day. I had three coding problems (pair programmed - two mice, two keyboards, one monitor), two architecture design problems (one new problem, one talking about a project from my resume), and then a discussion with two of the engineering managers, which was more of them answering any remaining questions I had, than an interview of me. There was also a quick tour of the building before my interview, a quite delicious lunch, and then a chat with the recruiter after all of the meetings had concluded to answer any additional questions and provide me with a timeline on when to expect a response. The coding interviews (placed back to back, and before the architecture problems) on site were explained very well and any issues were easy to address. Having the person sit next to you, with a keyboard at their hands as well, rather than across a table made the process feel much smoother. Overall the interview process was very quick and enjoyable (as interviews go). I had been the one requesting the dates be sooner rather than later, and they were very accommodating. And the style in which the on site was conducted was one of the best experiences I have had interviewing.