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 and API heaters across the globe.


Jason W. Turner Headhsot

Jason W. Turner


Jason Turner serves as President of Matrix NAC. Jason joined Matrix Service Company in March 2006 and has been president of Matrix NAC since December 2013. Prior to leading the company’s union operations, he served on the corporate executive management team with a variety of responsibilities including acquisitions, corporate finance, investor relations, risk management, and legal. Jason holds a Bachelor of Science Degree in Finance from Oklahoma State University and a Masters in Business Administration from the University of Tulsa. Jason is active in the community, currently serving on the board of the Jenks Public Schools Foundation and on its Development Committee. He is past Chairperson of Oklahoma Project Woman, an organization he continues to passionately support along with other non-profit organizations in the Tulsa, OK area.

Terry D. Stewart Headshot

Terry D. Stewart

Senior Vice President, Operations

Terry D. Stewart serves as Senior Vice President of Operations for Matrix NAC. Mr. Stewart previously served as Vice President, Operations for Canada from 2014 to 2017, as General Manager of Operations from 2006 to 2008 and Project Manager from 2005 to 2006 for the company. Mr. Stewart began his career with the company as a Millwright General Foreman in 1994 at General Motors and has worked in Mechanical Superintendent, Site Manager, Project Manager and Area Project Manager roles. Mr. Stewart has a 30 year construction career with experience in the automotive, steel, power and pulp and paper industries. Mr. Stewart completed the Millwright Apprentice Training Program at George Brown College in 1988.

Diego Carducci

Vice President, Operations

Diego Carducci serves as Vice President of Operations for Matrix NAC. Mr. Carducci brings 30 plus years of experience in the energy, chemical, mining and manufacturing fields. Before joining Matrix, Mr. Carducci served as Strategic Development Manager for Bird Construction. Before that, he served as Senior Vice President and General Manager for SRS Industrial and Chief Operating Officer for LAIRD Electric Inc. Mr. Carducci holds a mechanical engineering degree from Carleton University, Ottawa, an MBA from SDA Bocconi, Milan and has executive leadership training from Centre for Creative Leadership in San Diego. He has also received a professional engineering designation in British Columbia and Alberta and a Fellow of Engineers in Canada.

Douglas-Montalbano Headshot

Douglas J. Montalbano

Vice President, Electrical

Douglas J. Montalbano has served as Vice President of Electrical since October 2018. 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.

Jay Crilley

Vice President, Business Development

Jay Crilley serves as Vice President of Business Development for Matrix NAC. Jay brings nearly 30 years of experience in the power and industrial industry. Prior to joining Matrix he spent four years as Vice President at Day & Zimmermann leading their business development for fossil and growth markets. Mr. Crilley started his career as a consulting engineer then became the Plant Engineer and Projects Manager at A/C Power Colver Operations. He was responsible for plant operations, maintenance, project management and management of outside contractors and vendors. He has worked for various power and industrial plant suppliers that have provided capital equipment, environmental technologies, environmental services, project management and construction services throughout the industry. Mr. Crilley holds a B.S. in Mechanical Engineering Technology from the University of Pittsburgh and is a Registered Professional Engineer in Pennsylvania. He developed a patented technology, holds various certificates and has multiple industry publications.

Vicki Reese Headshot

Vicki R. Reese

Vice President, Accounting & Finance

Vicki R. Reese is Vice President of Accounting and Finance for Matrix NAC. She previously served as Business Unit Controller for Matrix Service overseeing all aspects of accounting and finance for the Storage and Specialty Vessel Division, Fabrication operations and Matrix PDM Engineering. Ms. Reese began her career with Matrix Service in 1986 and has served the company in positions of increasing responsibility, achieving a strong track record of performance and a reputation as a well-respected partner to the business. She is a Certified Public Accountant. Ms. Reese also serves on the board of Oklahoma Project Woman.