Epic Software Engineer interview questions

The interview was over the phone, no video call, which I was surprised by, because I haven't had it before. Pretty standard behavioural and experience questions, ex. talk about your experiences, relevant projects that you've done. The interviewer was also very warm and talked highly about the company. There were also a few online assessments, these were not standard. One of them asked me to do the Rembrandt assessment, which I've been asked for before, and one of them was many technical questions in 4 different categories, on some platform that I'd never seen before.