I've worked at a big corporate jet airfield over the past year for an aircraft valet which is owned by a private jet operator. IIRC the first manager was an ex FI. He took the job on the ground managing the valet with hope of getting a job in a biz-jet at the company. In the end it all fell through (I don't know how this is 2nd hand info) he did get a biz-jet job but I believe it was with a different company on the same airfield. I also see the same company are recruiting for customer service reps at the moment, perhaps that might be a way in.
I really don't know how useful any of this is to you or if this is what you are looking for?