The Cardinal signs are at the beginning of each of the four seasons of the year. Aries is at the start of spring, Cancer the beginning of summer, Libra the beginning of fall, and Capricorn the beginning of winter. You can think of these signs as representing the beginning of the cycle. I call these signs the “Sales Signs” because their traits lend nicely to being a sales person. Sales is essentially the beginning of the business cycle.
Cardinal signs have a way of attracting other people to them. People like them on first impression. They are more outgoing and at their extremes a bit obnoxious. They feel at home being the center of attention. Quantity is more important than quality. They would rather have a hundred OK friends than a few good friends. Cardinal signs are quick and confident, but this comes at a cost of not being too thorough. They are not known for being deep thinkers or ones to get into heated debates. They like to avoid confrontation. Cardinals are the type of people that would bounce from person to person at a party.
Cardinal signs may be best suited for sales, but they can fit into other positions as well. You just need to consider how they fit into those positions. As a manager, they would act as a motivator and give excitement to their subordinates. Their organizational skills and long term thinking may be lacking though. As a technical person, they are great at getting the project started. They are also good at getting the project out the door quickly. The project may not be completed well, but it would be done on time.