Matrix Service

Matrix Service provides construction, maintenance and fabrication to the energy and industrial markets across North America.

Since our start in 1984 as a petroleum tank provider, we’ve had a rich history of success and repeat business. Over the years we have steadily developed our competencies to become a full-service provider that adds value to every customer relationship and project. Our customers count on us for one-stop access to the skills of specialized contractors across many disciplines – the right team and the right capabilities for your unique project requirements.

Move to a higher standard of safety, quality, service and skill. Contact us for more information.

The Matrix family of subsidiaries

Matrix Family Subsidiaries

  • Matrix Service Company
  • Matrix Service Company is the parent company to four subsidiaries that provide engineering, fabrication, construction, maintenance and products to the energy, power and industrial markets.

    Founded in 1984 with many acquisitions along the way, Matrix Service Company is headquartered in Tulsa, Oklahoma, and trades under the NASDAQ symbol MTRX.

  • Matrix PDM Engineering
  • Matrix PDM provides world class multi-discipline engineering around the world.

  • Matrix Service
  • Matrix Service provides full service construction, maintenance and repair to energy, power and industrial customers across North America.

  • Matrix Applied Technologies
  • Headquartered in Tulsa, Oklahoma, with regional offices in Seoul, Korea and Sydney, Australia, Matrix Applied Technologies sells aboveground storage tank products and API heaters across the globe.

Community Involvement

Community involvement is more than a core value -- it’s a commitment from all levels of the organization to improve the communities where we live and work. From supporting the United Way and participating in various races to local food drives and holiday gift collections, Matrix employees are passionate about giving back and supporting our communities.

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Brad Rinehart


Brad Rinehart is President of Matrix Service. Prior to his current presidency, Mr. Rinehart served as President of Matrix PDM Engineering from December 2016 to September 2019. He also served as Vice President of Matrix Service from May 1997 to December 2016; Regional Manager – Michigan Region from April 1991 to April 1997; Operations Manager – Michigan Region from January 1990 to March 1991; and as a Project Manager – Michigan Region from January 1988 to December 1989. Mr. Rinehart holds an API-653 certification as well as an installer/inspector certification from the State of Pennsylvania as well as a Bachelor of Science Degree in Construction Science from the University of Oklahoma. Mr. Rinehart is a past board member of the Tulsa Ronald McDonald House.

Shawn Payne

Senior Vice President, Finance & Business Services

Shawn Payne is Senior Vice President, Finance & Business Services for Matrix Service, where he works closely with operational and functional management across the organization to ensure use of best practices as well as other business-related initiatives that optimize operational and financial performance. Shawn joined Matrix Service as a Division Manager in 2012 and established their Mining and Minerals division. Prior to joining Matrix Service, Shawn held leadership roles at Jacobs, Aker Solutions Americas Inc., and Aker Industrial Constructors Inc., in areas that included operations, finance, treasury and project controls. Shawn has over 20 years of industrial engineering procurement and construction experience and is a graduate of the University of Arizona, where he received his degree in Finance.

Frank Capristo

Frank Capristo

Vice President, Turnaround & Plant Services

Frank Capristo serves as Vice President of Turnaround & Plant Services for Matrix Service. He joined Matrix in 2013, most recently holding the position of General Manager, Maintenance & Plant Services and before that, as Project Sponsor for the BP Cherry Point Refinery where he established a strong reputation for safety and client relationship leadership. Before joining Matrix Service, he held several leadership positions at Brinderon, Jacobs Engineering and Fluor Corporation. Mr. Capristo brings more than 25 years of extensive experience in the Energy Services industry including large capital EPC projects, complex turnarounds, facility maintenance, tank maintenance and repair, industrial cleaning and fabrication. Mr. Capristo earned his Bachelor of Science in Engineering & Construction Management from Arizona State University. He also holds an Associate in Arts degree in Art History from John Cabot International College, Rome.

Patrick Chambers

Vice President, Major Projects

Patrick Chambers is Vice President, Major Projects for Matrix Service with responsibility for engineering, procurement and construction (EPC) projects and large bid/build construction opportunities. He joined Matrix Service in 2014 with responsibility for mid to large capital industrial construction and integrated EPC projects. Before joining Matrix Service, he held leadership positions with Jacobs, Brinderson and Transfield Services. Mr. Chambers has extensive experience in EPC, maintenance, turnarounds and specialty services, leading operations in a variety of market segments. Mr. Chambers holds a Bachelor of Science degree in Mechanical Engineering from California State University, Long Beach.

Kevin Durkin

Vice President, Business Development

Kevin A. Durkin has served as Vice President, Business Development for Matrix Service since June 2008. He previously served as Pre-Construction Manager for the Orange Region from November 2006 to May 2008; Small Capital Construction Division Manager for the Orange Region from June 2000 to October 2006; Business Development Manager for Matrix Service from June 1998 to May 2000; Southwest Turnaround Manager for Colt Construction Division from June 1996 to May 1998; and as assistant Regional Manager for the Orange Region from July 1989 to May 1996. Prior to joining Matrix Service, Mr. Durkin worked for HMT Tank Service holding numerous positions in operations, engineering and marketing. Mr. Durkin holds a Bachelor of Arts degree in Business Administration, Marketing from California State University, Fullerton.

Brad Killmer

Brad Killmer

Vice President, Accounting & Finance

Brad Killmer serves as Vice President of Accounting & Finance for Matrix Service. He joined Matrix Service in 2001, serving as Business Unit Controller for the Turnaround and Plant Services and National Construction divisions, then most recently, as Business Unit Controller for Matrix Service. Mr. Killmer began his career at Grant Thornton International and also served as Regional Controller for Granite Construction. He is a Certified Public Accountant, Certified Construction Industry Financial Professional, Certified Information Technology Professional and Chartered Global Management Accountant. He is a graduate of Brigham Young University.

Karen McDonald

Karen McDonald

Vice President, HSE & People

Karen McDonald is Vice President, HSE & People for Matrix Service. In this capacity, she works closely with operational and other management across the organization to provide strategic leadership that integrates and ensures alignment of our HSE, Human Resources, Training and Development and Communications functions. Karen joined Matrix Service in 2013 as Regional Manager, Human Resources for Western Canada and, in 2015, was promoted to Director, Human Resources for Matrix Service overall. Prior to that, she worked for SNC-Lavalin, a publicly-traded, global EPC firm, in various capacities including Manager of HR and HSE and Manager of Recruitment and Training. Ms. McDonald has a Bachelor of Commerce degree from the University of Alberta and has her SHRM-SCP and CHRP certifications.