Had a phone screen and was then called in to interview in person with 3 members. I was being considered for 2 different positions which were closely related but Epsilon seemed focused on talking about the less senior role. I heard nothing from Epsilon for over a month when they contacted me again to come in and meet with 3 more people. I had to ask which role I was being considered for. Apparently after my first round of interviews, my background was reviewed with a larger group and they now wanted me to talk to a totally different group. It was very frustrating but I really enjoyed talking with the hiring manager and thought things went well. However, the hiring manager's supervisor had the final say and at the end of my interview, he threw out a brain teaser that he expected me to answer. I know that this is an interview tool to see how well you think on your feet, think outside the box, etc. but after 3 hours of interviewing, my brain was fried. I was told I could think about it and email him with an answer when my initial responses were incorrect. I did think of an answer on my way home but at that point, I wasn't that interested in the job enough to respond back. It's now been over a month since that second interview and the company hasn't even bothered to inform me that I'm no longer being considered. I find that really rude considering I invested 6 hours to onsite interviews with them.