Comment by mcv
You can never get everything you want. Most programming jobs in NL don't pay much more than this. If you want to get paid what you're really worth, you need to work as a freelancer, but the tax service has just ruined that market.
And the advantage of this job is that I know I'll be working on things I love, they really want and appreciate me (if financially not quite as much as I'd like), and maybe I can push for change from the inside. Or maybe I'll leave once the freelance market picks up again. It's not like I'll be married to them.