I applied through a recruiter. The process took 1 day. I interviewed at Epic in July 2011
Interview
First of all, you need to pass a personality test which is similar to a SAT. I think it is quite easy but one of my friends just failed. After that, some hiring staff will call you and ask some routine questions. For example, how many hours did you spend on programming each week, and what's your grade of GRE or GPA... Then I went to a local library to take a skill test. The first part is logical questions about their internal used syntax/language, which is not difficult. The second part is 4 programming questions. All of them are String operations. You can use any language you feel comfortable.
Interview questions [1]
Question 1
Get all well-ordered substrings from a series of numbers. Well-ordered substring is a string composed by ascending numbers.
Medium level leetcode and then a very basic system design question as a final round interview. Overall, smooth and simple process. Only one technical and it was the first one.
Interview questions [1]
Question 1
How would you design a system to minimize wait time at a health care center?
First round is a thirty minute phone call with one of their developers. The other part of the first round is a three hour exam with IQ test style logic questions and coding questions.
[OA] OA was fair. Programming part are leetcode easy and easy-mediums, straightforward simulation, backtracking, dfs, strings, etc. No DP/graphs but ymmv.
[Final interview] (Case Study) I think the interviewer came up with their own prompt. It's mostly discussion-based, with a virtual white board. It's not too technical. I'm guessing its testing your communication/logical reasoning than system design skills. (Pair programming) 1 question, same format as the OA on the same platform, leetcode easy.
[Overall] Technical difficulty isn't bad. Interviewers who are current software devs seemed friendly. Had a good experience, yet got rejected.