30-minute phone call to confirm interest and review experience, 3 hour aptitude test, personality test, 10 hour unpaid Design Challenge. The interviewer I talked to on the phone was very kind and knowledgeable. I dropped out before completing the Design Challenge, because I did not feel comfortable working on a design project with content that could be used by Epic for their products without compensation. Rather than asking for process or to go over the rationale behind the design, they only wanted me to submit a finished product.

Applied, did some assessments that were essentially logic questions, some as you would expect, and others in a made-up programming language. Then went through a phone interview, design challenge, and then finally a 3-4 hour long interview final interview process.