As a pilot at a Fortune 50 flight department with 65 pilots, the way in is face to face networking. We rearly look at resumes that are mailed to us.
It is also wrong to think that a large company flight department will not hire a Jr. pilot. Personality and the ability to interact with the CEO of a Fortune 50 Corporatin is our number one priority. Our training facility (FSI and Simuflite) will teach the SOP's and airplane specifics. We have found that a very small percentage of Jr. pilots are not able to get through training. In fact, we have been very impressed with the quality of our young pilots.
Our most Jr. GIV-SP Captain came to us with no jet time. I think he was about 24 years old with all of his quality time in Cessna 421's. He started with us in our Learjet.
This "kid", who I dont even think shaves, made a great impression on the flight crews and the company managment. Without being asked, he was in the office when not flying helping with any administrative project.
Without being asked, he took it upon himself to develop a standardize aircraft stocking diagram to promote standardication of our cabins. This has now been adopted as a Company SOP.
If you are creative, good personality, ambitous, and bright, working your way to your goal is very doable, and should be lots of fun.
Good Luck