Jump pilot is a way to build time. Try a place that operates year round. You can start in a single engine piston, get experience and prove that you can fly safely and efficiently, and jump in a turbine once someone leaves which will be pretty quickly. Pay is ok to decent but it's long hours (think 8+ hours in the plane) on busy days and sitting around for hours on slow days. I logged 17 hours last weekend and about 14 this weekend plus 8-30 during the weekdays.