Linebarger began his career as an investment analyst and investment manager at Prudential Financial. He then took an internship at Cummins, joining the company full-time in 1993. During this time he held a variety of roles, including product manager of Fuel Systems Plant, then managing 60-member staff.[4]
Since 2012, Linebarger has served as chairman and chief executive officer of Cummins. Previous positions held at the firm include executive vice president, then president, of Power Generation Business; vice president; chief financial officer; and vice president of Supply Chain Management. He was also one of the "100 CEO leaders in STEM" by STEMblog.[5]
Boards
In 2008, Linebarger joined the Harley Davidson board of directors. He also sits on the Board at the Energy Systems Network. Linebarger is a principal of the American Energy Innovation Council.[6]