Michael B. Thomas, of Rochester Hills, Michigan, has accepted the position of Business Development Manager-Michigan with GEM Energy of the Rudolph Libbe Group.

Thomas, who joined the Rudolph Libbe Group’s Michigan business development team in 2015, will now specialize in HVAC preventive maintenance and facility management for Michigan customers. He has over 25 years of industrial sales, management and marketing experience with a focus on facility equipment and upgrades.

He holds a BS in Business Administration from Lawrence Technological University in Southfield, Michigan.

Thomas is a member of the Construction Association of Michigan, the Detroit Regional Chamber, Ann Arbor Spark and the International Facility Managers Association.