it is not so black and white like engineer good, procurement bad. engineering population is huge, got some variance in experience across programme centres (and even within, all depends on superior). and also depends on whether you can handle the red tape and bureaucracy. if you can, might be good for you. if you can't, likely you will find it very miserable. like they say, in the public service, people either quit early on or stay forever, there's no in between.

plus, don't forget DSTA serves SAF. and I doubt I need to say more about what SAF culture is like.

the only thing that you can say for certain is the salary for engineers is very good, at least for the starting salary.