Started with a phone screen, where the interviewer asked a variety of Object Oriented questions and a few Java questions. We chatted about the company a bit and what I was looking for in a position. The interviewer was the lead/manager of the team I'd be joining. The on-site interview was about 3 hours long. It involved 3 groups of employees: the lead/manager of the team I'd be joining, 3 frontend React/Redux developers from the team I'd be joining, and 2 backend Java developers. Each segment was about 45 minutes long. In the lead/manager interview, we continued our discussion from the phone and went more into specifics. We spoke about what the team was working on, what direction they were going in, and how the company worked. In the frontend interview, I was asked basic questions about JavaScript (e.g. how does asynchronous processing work), CSS (e.g. specificity), and React/Redux at a high level. In the backend interview, I was asked to describe all of the potential problems with a small function written in Java. There were about 5 problems to identify. I got a few, and then we had to chat for me to find more. I was given a good amount of hints for the ones I missed at first. I received a callback within a day or two.