Nor have I, but I did work with someone who was regarded as such at a company I worked for. He got the reputation for shipping features fast, but everything he

Nor have I, but I did work with someone who was regarded as such at a company I worked for. He got the reputation for shipping features fast, but everything he did was quick and dirty. This lead to some resentment with other developers tasked with extending the new features he shipped - invariably the simple extension to the feature would take longer than the original feature. Instead of indicating that everything this guy ships is a nightmare to work with, it further cemented the notion that this guy was a 10xer.