pixelfucking

Combination of, pixel (short for picture element, using the common abbreviation "pix" or "px")a single point in a graphic image, and fucking.

The meaning is applied to when someone is meticulous about the tiniest changes, (i.e one pixel left, one pixel right)in a design of some kind.

My boss is a pixelfucking, pixelfucker, but that's what makes him good at what he does.....
Great!