I carved business logic out of the Ant build language in my previous (and first) job. It was a long and disgusting challenge driven by a technical lead who had made technical and process decisions that I find pretty questionable. He also wasn't using a ticket tracker, then blamed it on me when my ADHD brain had trouble keeping track of verbally assigned tasks. Unfortunately I didn't have the background or heft yet to tell him to get off my back until we had a proper ticket tracker.