STE is basically a retirement house for a lot of government esp
SAF people. Many ex-regulars come in keeping their fat pay packages as directors or vps and it's a tightly knitted gentlemen's club.
There are many long serving staff who joined them for many years starting from junior levels and they usually get stucked as managers as the old boy's club only allows in people from the same background. Normal people will never get anything beyond senior manager rank no matter how good your performance is.