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about-interface-engineering-group

About

100% Employee Owned

In 2025, after 55 years of significant expansion and growth, Interface Engineering opened its…

Engineering with a purpose.

Interface Engineering is a multidiscipline firm known for visionary sustainable design and breakthrough engineering solutions. Our philosophy is to serve our clients through the entire design and construction process, delivering creative, engineering vision for each of our projects by transforming concepts into commissioned, high-performance buildings.

A half century of innovation.

Since our founding in 1969, Interface Engineering, Inc. has earned a reputation for technical problem solving and engineering innovation. And we will continue to lead the way as an advocate for smart, efficient and sustainable solutions for future generations to come.

Leadership

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Andy Frichtl

Managing Principal

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Roger Frechette

Managing Principal

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Hormoz Janssens

Managing Principal

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Shawn MacLean

Principal

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Adam Carlson

Principal, Senior Mechanical Engineer

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Andrew Flanagan

Principal, Senior Plumbing Engineer

Andrew Lasse Preferred

Andrew Lasse

Principal

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Cody Bargholz

Principal, Senior Electrical Engineer

Craig Burton 400X400

Craig Burton

Principal, Senior Mechanical Engineer

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Eugene de Souza

Principal

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Jim McClelland

Principal, Senior Mechanical Engineer

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Jim Sattem

Principal, Senior Electrical Engineer

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Joe Schmid

Principal

Joel Cruz 400X400

Joel D. Cruz

Principal Emeritus

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Joseph DiIenno

Principal

Kenton Aikens 400X400

Kenton Aikens

Principal, Senior Fire/Life Safety Engineer

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Kevin Cahill

Principal

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Mark Blazis

Principal, Senior Mechanical Engineer

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Mark O’Leary

Principal

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Michael Flemming

Principal, Commissioning Agent

Michael Troyer 400X400

Michael Troyer

Principal, Sr. Technologies Designer

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Nick Marcyan

Principal, Senior Commissioning Authority

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Rick Russell

Principal

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Scott Holum

Principal

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Scott Sato

Principal

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Shem Heiple

Principal, Senior Mechanical Engineer

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Steve Dacus

Principal

Steve Gross 400X400

Steve Gross

Principal

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Tom Voltaggio

Principal Emeritus

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Wesley Lau

Principal, Senior Electrical Engineer

Across the country. Around the globe.

With more than 220 engineering professionals in ten offices, Interface Engineering is ready to serve you. Contact us to get started on your next project.

Careers

Looking for career growth and the opportunity to make a difference in our world? The path starts here.

View Our Open Positions

Contact

Collaboration can produce amazing results. Whether it’s your next project or a new career path, let’s work together.

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