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TMAC was established in 1995 to provide strategic and technical solutions, and training expertise to Texas businesses. They collaborate with customers to increase profitable growth by using a customized approach to improve products, processes and people. TMAC begins by finding answers to strategic questions that impact growth, production cost, product quality, service levels, sustainability and safety. By gaining a clear understanding of the organization’s challenges, TMAC delivers strategic guidance, technical expertise, technologies and training to help customers improve their company and excel in today’s hyper-competitive business environment. With seven regional field locations serving manufacturing, government and healthcare businesses across Texas, TMAC works closely with customers to implement solutions, methodologies and training that develop internal team expertise to make real business improvements.

Contact:   Rolando Colindres-Bran   |   |   +1.800.625.4876


English, Spanish




Manufacturing, Government, Health Care

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Certified Facilitators

Mark Sessumes

Mark Sessumes

Regional Director

Mark Sessumes has 30 years of operations, management and consulting experience working with organizations to accelerate their profitable growth using innovation, productivity, technology and management systems best practices. Mr. Sessumes' numerous deployment engagements to design, develop and improve products, processes and people have resulted in hundreds of millions of dollars in documented impact. He specializes in leadership development and operations improvement, and applies his experience, knowledge and abilities through executive coaching, facilitating executive teams, project work and training.  Mr. Sessumes is a certified lean practitioner, Shingo Prize examiner, certified lean six sigma master black belt, certified change management agent, and an associate editor for the Journal for Enterprise Transformation. He earned a MBA from The University of Dallas and a bachelor's degree in production/operations management from North Texas State University in Denton, Texas.