I really like turning legacy code into non-legacy code. It feels like getting to solve a mystery. For example, maybe there's really crazy hard to follow code a

I really like turning legacy code into non-legacy code. It feels like getting to solve a mystery. For example, maybe there's really crazy hard to follow code and the person who wrote it left a decade ago and there's no tests so it's too risky to refactor it but you can write new tests, really delve into the use case of the code and then refactor the original code. Or, maybe the code is using a version of a framework that's 9 years out of date but you can incrementally upgrade it after gaining confidence in any way you can.