Looking at this another way, I have never heard of an AI pilot ever being employed by SQ. SQ and CAAS have standards that are open and fairly transparent. AI and the DGAC are known for corruption.
If I was working at an airline, and heard they had the choice of hiring pilots that worked at either SQ or AI, I would not even consider the AI pilots. They are clueless on working as an expat, and working outside a government run workshop like AI.
Being a contract pilot means no security, they have to perform, the SQ pilots have the track record. All of the SQ pilots I understand had previously had their contracts renewed, it means they performed well over their first contract.
The AI pilots should try airlines in Doha and Incheon, they are always looking.