Our People

The people at HGA, bring diverse backgrounds, expertise, and a drive to solve our client's challenges. Our emphasis on teamwork, trust, and passion for excellence helps clients achieve the extraordinary. Together, we achieve results that solve your challenges and bring about positive results.

Jay Guillot

Senior Vice President

Jay is one of HGA’s founding partners; a team-oriented leader with 40 plus years’ experience. Read More

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Don Plummer

Executive Vice President

Don is a Principal at HGA who has been instrumental in adding diverse markets and. Read More

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Trotter Hunt


Since joining HGA in 2008, as leader of the business development team, Trotter successfully led. Read More

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Barry West

Operations Manager, Houston

Barry is the operations manager at HGA’s office in The Woodlands, Texas. Read More

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Kelli Hammock

Chief Administrative Officer

Kelli joined HGA in September 2019 and focuses on the role of the Administration Department. Read More

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Mike Causey, P.E.

Vice President for Corporate Strategic Development

Mike serves as the Vice President for Corporate Strategic Development at HGA. Read More

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Sam Costanza

Ruston Operations Manager – Engineering

Sam joined HGA in 2008 and is the Ruston Operations Manager for HGA’s Engineering Business unit. Read More

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Wynn Rogers

Operations Manager

Wynn has played a key role in expanding HGA’s footprint of our Pipeline Services Business. Read More

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Chris Wyatt

GM – Staffing Division

Chris joined HGA in 2005, and under his leadership, HGA’s Staffing business unit has grown. Read More

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Will Voltz

Operations Manager - Birmingham

Will earned a Bachelor of Science degree in civil engineering from Virginia Tech University in. Read More

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Jim Hughes

Director – Pipeline Services

Jim has deep experience in the oil and gas sector and has helped establish the HGA brand in the Houston market. Read More

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