Our award-winning projects are produced through innovation, creativity, and technical expertise. Sustainability is a key element in everything we do: in our project designs, in our staff training, and in our professional activities. It’s so ingrained in the Psomas culture that our motto is “balancing the natural and built environment.” Founded in 1946, we are a full-service consulting firm with offices in California, Washington, Arizona, and Utah. We serve clients in the Transportation, Water, Facilities, Land Development, Energy, and Federal markets.
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Psomas Questions
The Psomas annual revenue was $112.9 million in 2026.
Jeff Gillis is the CIO of Psomas.
576 people are employed at Psomas.
Psomas is based in Los Angeles, California.
The NAICS codes for Psomas are [54133, 5413, 54, 541].
The SIC codes for Psomas are [87, 871].
Top Psomas Employees
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Jeff Gillis
Chief Information Officer at Psomas
Costa Mesa, CA, US15+ -
Andrew Nickerson
Vice President, Engineering at Psomas
Los Angeles, CA, US15+ -
Ryan McLean
Chairman of the Board at Psomas
Costa Mesa, CA, US25+ -
Brett Barnett
Vice President at Psomas
California, United States35+ -
Amy Keller
Vice President | Talent Management and Communications at Psomas
Carmichael, CA, US25 -
Ann Johnston
Principal and Vice President, Resource Management at Psomas
Huntington Beach, CA, US25+ -
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