Jon Mauer

President and CEO

Jon Mauer, President and CEO of Island Energy Services, is the former General Manager of Chevron’s Hawaiʻi Refinery.

Mauer comes to Island Energy from Chevron with 28 years of refining and marketing experience.  He began his career at Chevron’s Richmond Refinery as an engineer and continued to progress through positions of increasing responsibility.  Through the course of his career, Mauer has held leadership and management positions with Chevron’s Corporate Investor Relations group, Retail Marketing Logistics, U. S. West Coast Supply and Trading operations, as well as Base Oil Manufacturing and Technology. Prior to becoming the Chevron Refinery General Manager in March 2015, Mauer previously served for three years as the Refinery Operations Manager at the Kapolei facility.

A native of Pacifica, California, Mauer joined Chevron in 1988 after graduating from the University of California – Davis with a bachelor’s degree in Chemical Engineering.  He earned his master’s degree in Business Administration from the Haas Business School at the University of California – Berkeley in 2000, with an emphasis on strategy and finance.



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