Pittsburgh has a small selection of part 135 operators. There is one that operates out of both PIT and AGC. If I were you, I'd stay far away from that one. You will sign a training contract and be promised the world. Once you've signed the dotted line you are his. If you don't have PIC turbine it will be years before you upgrade while you watch people come in off the street to fill that position.
Fast forward 10 years when you have enough time to leave. You will owe him money for the training contract. Yes, even after 10 years. (Every time you go to training, you'll sign another one.) Many people end up with overlapping contracts.
Add the on call 24/7 lifestyle, poor salary (the NBAA survey is no where near reality at this operation), weak benefits, temper tantrums together and you have a miserable job. I purposely have not mentioned a company's name. It won't take long when you ask around to figure out who it is.
Do yourself a favor and stick with the regionals. I'm assuming you wanted to fly for the airlines in the first place. If you can find another regional with a shorter upgrade, go there. It would be much easier explaining the change in an interview for your dream job, than a jump to 135.