@sheep - normally you would take up graduate studies:
to complement your bachelor degree.. (example BMech Engr, then MS in Proj Management)
or if you want to change careers.. (example BMech Engr, then MS petroleum/Environmental Engineering)
or if you see your self doing operations/management ( Engineering or Technology Management/Management Studies/MBA)
but make sure that whatever your take, is aligned to your long term career objective...
I completed master in engineering, because i know i want to strengthen my technical skills in my field. After a few years, i realize i want to study again, I took MBA naman.. i guess my point is, nothing can stop you kung anung gusto mong kunin, you just have to prove to the admission department why do you think you need that graduate degree and of course that you are capable of completing it..
Graduate studies in AU will be approximately 1-2 years (fulltime) to minimum of 2-4 years (part time).. School year is 2 semesters, 1st sem March-June/Jul, 2nd Sem July-Nov/Dec