for questions related to projects or programming work carried out by one part of a company without the knowledge of the remainder of the company
Skunk Works Project
Generally, this refers to a project carried out by one part of a company without the knowledge of the remainder of the company.
Famously and specifically, this phrase refers to Lockheed Martin's Advanced Development Programs (ADP), responsible for a number of famous aircraft designs, such as the U-2 and SR-71 Blackbird.