In case anyone without an FAA ATP is interested in Atlas:
"Candidates without an Airline Transport Pilot (ATP) Certificate
Atlas Air now offers a limited number of highly qualified candidates the opportunity to complete the ATP certification course. Pilots must meet all the required pre-requisites for obtaining an ATP listed above, while meeting the ATP minimum flight hour criteria listed below"
https://www.latestpilotjobs.com/jobs/view/id/17873.html