Dark matter does the hidden work that nobody sees but which is absolutely vital: it provides structure to the universe and makes our existence possible.

So dark matter developers then are the most important kind of developer: doing the vital work that keeps the company going but which nobody else sees because they're just doing the job properly.

And then of course their are the flashy visible developers who want everyone to know and see that they're working, because ultimately what they do doesn't really matter even though it may generate a lot of flash and noise.