Jim Davis was born in Cockeysville, Maryland, United States. Jim Davis is #849 in List Billionaires People In The World. Jim Davis is cofounder of Allegis Group, the world's largest privately-held staffing company. He founded Allegis (then called Aerotek) in 1983 with his cousin Steve Bisciotti, who is also a billionaire. Allegis now has offices on four continents and boasts annual revenue north of $11 billion.