One of the systems I work with just re-hired the original developer now that he retired. The software is around 20 years old and the guy is working for fun. It'

One of the systems I work with just re-hired the original developer now that he retired. The software is around 20 years old and the guy is working for fun. It's actually quite interesting to see haha, the system is the core of a large company and hasn't changed that much since he left a decade ago. He sort of picked up from where he left.