It was an online interview, and the interviewers were nice, asked me about my experiences on my resume, along with some simple technical questions related to my projects as well.

Overall, very professiona and conversational. There were lots of questions regarding skillsets, the previous jobs in the resume, school projects, the process of working, the starting date, etc. About an hour long, with a Q&A towards the end. It extended over the time period, also included a brief firm tour.