Though, the order of events might be backwards there sometimes. The director has a highly visible and strategic new feature they need executed, so they'll handpick the best engineers to work on the project. The engineers complete the project as fast as possible because that was the point of the project, to get the team that could produce a MVP fastest. And the technical debt and productionizing of the project is something that can be done by a less specialized pool of developers, who also are given way less tight time constraints.