Basically Alberta is more for oil and gas; and civil.

But the situation in each and every sector is bad unless you have insider connection though friends and families. As you already have a good job in USA, the best thing at the moment is to land now and go back and seek the job from the USA.

If you want more information about Nepalese in Calgary region:

go to http://www.calgarynepalese.ca/ and contact anybody in the executive committee as they are the one who been in the area for long time.