Timothy Psomas is chairman emeritus of PSOMAS, a leading engineering services firm headquartered in Southern California. The firm focuses on water resources, transportation, energy, development, institutional and municipal markets in the Western United States.
He serves on the board of directors of several private companies including engineering, construction, technology startup businesses and professional service firms nationally. He is past national chairman of the American Council of Engineering Companies, ACEC, and past national and founding chairman of the Institute for Sustainable Infrastructure, ISI. He is a past chairman of the Coalition for Project Delivery, and the Center for the Study of Los Angeles.