Definition: Pumpsman is a term used in the field of computer science and software engineering, specifically in the context of network programming. A pumpsman is a programmer who is responsible for debugging and optimizing the performance of a program. In the context of software development, a pumpman would be an individual or team who focuses on improving the codebase by identifying bugs and optimizing performance. The term is often used to describe someone who takes on the responsibility of writing unit tests, unit testing frameworks, and other tools