Time line of the first 30 years


Matrix NAC: supporting critical infrastructure through union labor since 1986

The direct hire union division of Matrix Service Company, Matrix NAC has provided procurement, construction, maintenance and repair services to the energy and industrial markets across North America since 1986. Our unparalleled commitment to safety, quality and client success has made us an employer and provider of choice throughout the years, as well as earned us industry recognition year after year.

Parent company Matrix Service Company began its union operations through Matrix NAC in 1986, but Matrix NAC increased its experience and capabilities exponentially through its acquired businesses which include S.M. Electric and Kvaerner North American Construction. This proud legacy extends as far back as 1946. Today, Matrix NAC enjoys a long-standing reputation for excellence across a host of services including large capital construction, oil and gas storage, power generation, power delivery, integrated iron and steel and refinery and petrochemical work.

We maintain strong relations with national labor groups with active participation in the National Maintenance Agreement Policy Committee and other labor management committees and associations, both on local and national levels. These crucial relationships support North America's craftspeople and ensures that we effectively staff projects with the most qualified craftsmen on the continent.

Community Involvement

We go above and beyond corporate responsibility to make sure we touch lives, affect the community and help those in need. From supporting the United Way to local food drives and holiday gift collections, Matrix employees are passionate about giving back and supporting our communities.

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Family of companies

Matrix Service Company and its divisions provide engineering, fabrication, construction and maintenance to the energy and industrial industries.

Matrix Service Company is headquartered in Tulsa, Oklahoma and trades under the NASDAQ symbol MTRX.

  • Matrix NAC
  • Matrix union operations began in 1986 through Matrix NAC.
  • Matrix PDM Engineering
  • Matrix PDM provides multi-discipline engineering, design, and project management services around the world.
  • Matrix Applied Technologies
  • Headquartered in Tulsa, OK, with regional offices in Seoul, Korea and Sydney, Australia, Matrix Applied Technologies sells aboveground storage tank products across the globe.


Douglas-Montalbano Headshot

Douglas J. Montalbano


Prior to becoming President, Douglas J. Montalbano served as Senior Vice President of Operations. Mr. Montalbano joined the company in November 2014 as Vice President, Business Development. Prior to joining Matrix NAC, he served as Director, Business Development Fossil/T&D for URS Energy & Construction, Inc. Mr. Montalbano held various positions of increasing responsibility at URS Energy & Construction, Inc. and its predecessor company since 2004, including Associate General Counsel. Mr. Montalbano has a Bachelor of Science in Economics from Villanova University College of Commerce and Finance and a Juris Doctor from Villanova University School of Law. Mr. Montalbano is a licensed attorney in New York and New Jersey.