Also, for what it's worth, there are rumours every day about the number of local Vietnamese pilots who have resigned from VNA in order to move to Vietjet (yes really, because it's a massive pay rise for them)
They're crazy... VNA may pay less (i don't know exactly) but the routes are far more interesting, the planes too (777, 330 etc), the IATA member, yes they should not forget that, good to go on holidays for a cheap price etc.
VJ has : some routes, 320 (only), it's LCC (so...it says all) and not IATA member.
They should really do the maths before (and think in long term career too).