The requirements are very specific. Minimum a degree with some industry experience. Specifically, in semiconductor. You have to consider from the company HR's point of view. They will probably receive many candidates that will fit their criteria already so they probably will not be spending time to look through cover letters. You know they won't because they have outsourced the hiring to a recruitment agency. They want their recruits fast and well fitted. I think your chances are slim.

On another point, it's no longer true that CS or Mindef personnel had it harder when finding jobs outside. I have met former CS/Mindef people who are doing well in logistics, project management and even finance. Somehow it's very weird that only SGreans don't hold their CS in high regard when foreigners think that our CS is a miracle. Lol.