I think people in general are very friendly to expats. Moaist problem is domestic politics and nothing to do with expat, so far no expats are harmed.
There are many expats working in development aid projects, in flying almost nil. Historically nepal never had more than couple of expat pilots (that is many years back).
There are several private airlines runing Twin Otter, Do228,KingAir, Cessna caravan, ATR,Dash8 ect. If you have heaps of experience in high terrian mountain flying on STOL field in special vfr operation with marginal WX, then that is the place to go. Pay depends on your experience and experties in above operation, about USD 3000/month.
You can try yeti airlines,Kathmandu.