Hello ChuaJ,
Their requirement is I think a Diploma, thus, a degree would likely be an added advantage. You should check out their Career Psoting at
www.singaporeair.com under Careers, Technical Positions for the detailed requirements like eyesight, education qualifications etc.
I'm not a pilot, not even a cadet pilot yet, just someone who has gone for the 1st interview and waiting (eagerly) for their reply. So cannot really comment.
Regards.