in a similar vein of story, there was another engineer who spent months (or even years?) of their life perfecting the rover's landing radar -- the thing that figures out how far the rover is from the ground, and how fast it's coming in to land
which is really important, because if it's wrong, you slam into the surface and lose several billion dollars of rover
but, of course, that means years of work go into one tiny thing that's going to be used for less than a minute. which is a hilarious ratio of creation time to use time.