do u need a certain endangering lvl for that assignment to show up as i haven't noticed it but only at eng lvl 2.
I don't think so, but it only shows if you directly talk to your Engineer. And it's a random chance to appear, depending on what sector you're in at the time.
Though I am having a weird problem. My Fed captain is getting the mission, but it's wanting two Engineering Matter-Antimatter specialists... and two Science Matter-Antimatter specialists. I've yet to find any of the latter, so I keep turning out crummy Mark X greens. x.x
My KDF has had much better luck. I'll have to see if his mission has the same issue. My Romulans work great, but given they're only in the 15-26 level range, the best I'm getting are purple Mark VI ones.
Keep calm, and continue firing photon torpedoes.