I applied to Epic via their website in January 2014. The position I applied for is actually called Integration Engineer/Technical Project Manager, but within the company it's referred to as EDI. Within a few weeks I was contacted via email about setting up a phone interview. The interview was with an EDI who had been at Epic for about 5 years. He told me about the position and asked me about my educational and professional history. Interview questions were pretty standard. I made sure to express interest in moving to Madison because I imagine that it is a deal breaker for many recruits.
The following day I received another email from the recruiter asking me to fill out my Rembrandt profile and to take a technical assessment. The assessment was done through a company called ProctorU that connects to your computer to make sure you don't cheat. The whole thing was a bit unnerving but you sort of forget they're there after a little while. The assessment consisted of a Math/Logic Section, a Speed Math Section, and two Programming Sections. In the first programming section, they introduce a new programming language (which I believe is similar to MUMPS, the language that the Epic software is rooted in) and ask you questions to see how quickly you can pick it up. The other consisted of 4 programming problems that you are free to complete in any language, including pseudocode. They estimate it takes about 3 hours but it took me closer to 4.
3-4 weeks later I was invited via email to an on-site interview in Madison, WI. They also informed me that they'd like to talk to me about a Server Systems position in addition to EDI (it seems that they do this for many recruits considering the expense to fly you out). I flew in the day before my interview and they covered airfare and a night in a very nice hotel. They also asked if I would like to go to dinner the night before with some Epic employees, which I agreed to do.
The interview day started at 8:30 AM the following morning. I was blown away by the campus from the moment we arrived. First up was an overview of the company and a software demo. After, I had my first interview of the day which was for the Server Systems position. The interviewer told me about the role, which was different from the impression I got from reading the job description. I explained that I was leery about being able to perform the job based on my experience, but he made it clear that you undergo extensive training, more than for many other roles. He then asked me a series of interview questions which were not very technical in nature. He asked mainly scenario-based questions.
Next, I completed another assessment, this time another math section and a verbal section, both of which were pretty easy. From what I understand, you do the bulk of the assessment before you arrive and then one or two more parts on-site.
Next was lunch in the cafeteria. The food is great and very inexpensive for the employees. Being in the cafeteria feels like being on a college campus. Throughout the entire day I would estimate that at least 75% of the people I saw were under 30. The youth of the employees is partly where Epic takes some criticism in the industry, but I really liked the environment and felt that I would enjoy working there.
After lunch, I, with two other recruits, spoke for 30 minutes with an EDI Team Lead who had been with Epic for about 8 years. This was informal and, after he gave an overview of the position, he opened the floor to us for questions. One thing that I noticed and really appreciated during the day, especially during this session, was just how smart and capable everyone seemed.
Next was my actual hour-long EDI interview. This one was with another EDI Team Lead who had been there for about 10 years. This was very similar to the Server Systems interview; it wasn't very technical and she asked a lot of scenario based questions. I felt that this interview went reasonably well, but I was kicking myself for answering two consecutive questions in a way that completely contradicted the other answer. After this was a brief tour of a few buildings, all of which are incredible.
The final appointment for the day was with an HR recruiter, who was very pleasant. She asked me if I had any remaining questions, so I asked her for some clarification on the benefits and 401k. She finally asked the only question I had been dreading all day - my expected salary. I gave what I felt was a reasonable number and to my pleasant surprise she said that it would likely be higher.
Two days later, the recruiter called me with the offer.