I would be very cautious wanting to join Atlas at this point. The company has mentioned that they intend to use Florida West (Non union **** carrier with horrible work rules) as an alter ego, and not merge them with Atlas/Southern. They will play the whipsaw game, which means that eventually they will move airplanes from the Atlas and/or Southern certificates to the FW certificate to prevent Pilots from having a descent contract. What that means for new guys hired at Atlas or Southern is a probable furlough in the not too distant future. They are playing the regionals game because they don't want their Pilots to get an industry standard contract, they do want to utilize them as much as possible but don't want them to get paid for it. They are reaping the profits this company makes with their huge salaries and bonuses.
These people are really upsetting everyone who work so hard in this place and they will leave once they get their money and leave a huge mess. This could be a great place to work at, unfortunately, it's not.. not with people like that at management level.
There are much better options out there, even some regionals are better at this point. I'm new there and my resume is up to date with many carriers and some part 91 too.
I think they aren't grasping what is going on in this country with the Pilot hiring going on everywhere and the pool of applicants dwindling down.
I told 4 of my ex co-workers who were interested in Atlas to stay put and look elsewhere. There are much better options.