Not enough. I'm trying to do this with our new code base, but it's difficult when I need to get everyone else on board. I'm trying to lead by example, but I feel like I'm also racing against other devs to get good feature work in before bad code gets in. The rest of the devs will simply copy what the existing code does instead of figuring how how to do something properly. Doubly frustrating that I don't have a senior title or pay, but am hiring and cleaning up after senior devs.