The only jet airlines who will hire you without previous jet time are the commuters. Plan on instructing/flying skydivers/flying Grand Canyon tours/towing banners until you get Part 135 minimums (1200 total, etc). Then get a freight job in a piston twin, stick that out for a year, then start applying to the regionals. Once you have a couple thousand hours jet time, you can start applying to the jet freight airlines. Regardless of what route you choose, plan on living in poverty for the majority of your career.