[sgh]

"IT is a very wide field just like other profession. One particular role called software development is hard to get ppl to stay long. The nature of this job require constant upgrading and is very taxing on brain cells. This particular role find little attraction in local. Most just want to get past and move on to say IT QA Security Project Management role instead."

I know Singaporean friends and relatives in this field. Most find it difficult to sustain for long periods. 
Unlike other professions, the longer we worked, the better is our skill.

IT is a trade that evolves very fast, within a year or even months. 
Need to have a large population with many hungry upcoming youngs to pursue the skill and knowledge of new technologies. Very competitive. 
And it is a very expensive trade to  venture into. 

The MNC willing to invest $millions or $billion into a tiny Singapore with very low population. 3 million citizens. 
Definitely our human resource availability is not the top attractions for their ventures.
We are lucky when they are willing to adhere to our MOM citizen/pr ratio with foreign workers policy.

You write so long but you do know what we are lacking. IT software developer we need alot of them. As long as this role is shunned Spore govt no choice will keep import and now the foreigner say must also import their project manager etc too as a total package a la ransom if you think another way.