I have to be honest, I do not understand why any First Officer, particularly a young First Officer i.e. Under 40 would want to stay at Saudia. Qatar Airways has an order book of 208 new aircraft arriving over the next couple of years. "208" New aircraft, after nearly 70 years of operation Saudia had a total of 120 aircraft.
I understand that Qatar are offering fast command now for suitably qualified First Officers. In any case you would join a fair seniority list in a company that will double in size in the fairly immediate future.
Even Etihad have orders for 116 Aicraft which doubles their fleet over the next few years.