Mr Kruger began his career with Exxon Company USA in 1981 in Houston, Texas, and in the subsequent years he held various engineering, business planning and management assignments.
In 1994, Mr Kruger was appointed production advisor for Exxon Corporation in Irving, Texas, and in 1996 he returned to Houston to become technical manager for Exxon Ventures with responsibility for Russia and the Caspian Sea. In 1999, Mr Kruger was appointed vice president of ExxonMobil Development Company with responsibility for deepwater oil and gas developments offshore Africa.
In 2001, he was transferred to Kuala Lumpur to become chairman and CEO of ExxonMobil Exploration and Production Malaysia. In 2003, Mr Kruger became vice president for ExxonMobil Production Company’s Asia Pacific and Middle East operations. He was appointed executive vice president of ExxonMobil Production Company in 2006.