For me it's a bit of both. I'm working on exciting energy software with people who have deep knowledge of the sector but only semi-decent software knowledge. Nearly every day I'm reviewing some shitty PR comprised of awful, ugly code that somehow mostly works.

The product itself is exciting and solves a very real problem, and we have many customers who want to use it and pay for it. But damn, it hurts my soul knowing what goes on under the hood.