In total, the interview process lasted about 2 months from application to job offer. First step after submitting an application (online for me) was a phone interview. This occurred about 1.5 weeks after application closing date. If that goes well, you will be invited to testing at the end of that phone conversation.Testing involves traveling to the power plant to take a battery of standardized tests seen commonly throughout the industry called the POSS and BMST. I was given nearly 3 weeks to study for these tests. Upon passing the tests, I heard about 2 weeks later (via email) that they would like to schedule a final, in-person interview at the plant. This last interview was a group interview in which a corporate Exelon HR representative, a plant-specific HR rep., and the plant's Shift Operations Superintendent were present to carry out the interview. About 2 weeks after the final interview I received a job offer via phone.