Domande di colloquio per Back-end Java Engineer presso Fanatics

Out of nowhere and with no technical or phone interview, they invited me into a closing office and had me interview with two engineers and a supervisor. They didn't tell me what position they were hiring for, or what skills I was expected to have, prior to the interview. I flubbed a lot of questions since I hadn't prepared and had no idea what to expect, but ultimately they extended me an offer anyways.