The Epic recruiter reaches out to you and invites you to apply. Then you submit a resume. After submitting a resume, they send you links to take a personality assessment, web proctored GRE-like test & programing test. Next, you speak with a Trainer/Project manager for a screening. They say that you can't prepare for this exam, but you can! To ace the programming portion, take Fundamentals of C# for free at Microsoft's virtual academy. To pass their web-proctoered exam, get a GRE quantitative study book or look at practice problems. Also study "modus tollens and ponens" like problems; there are a lot of those on their assessment. Unless, you are a super genius, I really wouldn't waste the energy and time applying; they seem to be just building a database of qualified candidates for use one day. FYI, the web-proctored exam is a total violation of privacy of your computer and the place you choose to take the test.

Expect multiple rounds of interviews involving typical interviews with recruiters, as well as taking a logic and coding test (even if you won’t be coding, you’ll still do some basic stuff on the test for it), and will also need to do a persuasive or informative presentation.