Diversified Technical Services

When Elio Castañuela launched Diversified Technical Services, Inc., he envisioned a company with a fierce commitment to customer success and satisfaction. From those beginnings, DTSI developed a culture intent on providing the most innovative and advanced solutions to the increasingly demanding technological challenges facing governmental agencies. Although initially small in size, the organization gathered a highly experienced and knowledgeable staff, leading numerous projects in the U.S. and around the world, building a reputation for meeting deliverables on time.

DTSI is a leader in the systems engineering and IT services industry. With nearly four decades of experience providing quality and cost-effective technical support services and solutions to a diverse customer base, DTSI applies time-tested skills, knowledge, and abilities in the management of its projects and contracts. DTSI also possesses a wide range of capabilities from software development to telecommunications and network support to legacy system migration and system modernization. As a CMMI® Level 3 appraised company and a perpetually growing organization, DTSI’s Quality Control Processes guide DTSI in not only the operations of its contracts but the management of the entire corporate body.

A CMMI® Level 3 Appraised Organization

Leadership Team

Suzanne Castañuela

Chairman, DTSI

Manuel Marrufo

Chief Executive Officer

Greg Wicketts

President and Chief Operating Officer

Dave Ramos

Vice President – Corporate Affairs

Laura Vasquez

Senior Director, Business Compliance

William “Bill” D. Foote

Director, Business Development

Russell Williams

Director of Operations

Russell Williams

Director of Operations

Ronny Holmes

Director of Support Services

Ronny Holmes

Director of Support Services

Greg Olivares

Cyber Account Executive

Our Corporate Office

In 1980, DTSI was founded with the vision of combining the latest technologies with expertly skilled people to deliver the right solutions to our customers. Nearly four decades later, our agile organization continues to deliver on that vision and as a result, our customers have benefited from the range of solutions and services that DTSI has delivered to them. We invite you to explore our site and obtain a brief snapshot of our organization and the successes we have enjoyed.

12508 Jones Maltsberger, Suite 101
San Antonio, TX 78247

(210) 341-1980
Fax (210) 341-1969

Diversified Technical Services Inc


Our portfolio of customers represents a variety of domains, platforms, technologies, and unique mission challenges. We are proud of our history and proud of our people and their commitment to assuring our customer’s mission is successfully executed.


We partner with the world’s industry-leading defense technology companies to keep you in the loop of software and cyber transformation. Our partner network enables us to deliver expanded technological expertise and ongoing support to help you succeed. Contact us to join our team of valued delivery partners.

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Want to Connect?

Contact us today to learn more about our services or how to become a partner.