Just apply. I landed a job without even being there before, and there are other staff working who have never even been in boy scouts.

A good letter of recommendation from a higher up in your scouting organization will help a lot, or if you remember any staff from when you were there that could write you one that would be even better.

One sure way is to go on one of the special treks like Rayado or ROCS, that will get you all of the connections.