I applied online and had a phone screen with recruiter, then another with the hiring manager, then Skype interview with hiring manager and another team member. Mars is a really great company, the people I spoke with were all great, and I asked the interviewers for feedback on my qualifications at the end of my Skype interview and they had very helpful feedback. I am a little miffed because they ended up hiring an internal candidate, which seemed to be what they wanted in the first place given the state of the current project. I don't understand why they would get my hopes up and even interview external candidates when they had pretty much already decided their needs required an internal candidate. I would certainly apply to Mars again, and would love an opportunity to work there, I just wish they wouldn't waste the time of external candidates if they would rather hire internally.