Companies will be recruiting for 500 job positions at the Michigan Hot Jobs! Expo on Thursday, March 30. JobFairGiant.com announced it is hosting the job fair, 9 a.m.-3 p.m. at the Auburn Hills Marriott Pontiac, 3600 Centerpointe Parkway, Pontiac.Representatives from the following companies will be on hand: Teachout Security Solutions, North Star Ranch, Life Center Inc.