I'm struggling with trying to figure out the intro timing for a character I've just apped, so I might be in the same boat. (presuming she's accepted before everything ends and makes my fretting moot, lol)

I think part of the problem is that, being that he hangs out in engineering, he's not generally portrayed as a very....er...socially aggressive guy? That's not the right phrase, but it's close, I think.