Alfonso Vergara P.E.


Alfonso graduated from Pennsylvania State University with a Masters Degree in Structural Engineering. Alfonso is licensed by the North Carolina Licensing Board of General Contractors and leads the team with over 36 years of expertise in commercial contracting, design build construction, and structural engineering. Alfonso and the team bring a long track record of success in a full range of commercial projects. The team focuses on the values of professionalism, integrity, and quality.

Juan C. Vergara

Vice President Preconstruction

Juan graduated from East Carolina University with a degree in Business Management, later attending North Carolina State University and graduating with a Construction Management Diploma. Juan’s focus is on fostering new relationships across the industry and growing our footprint in the Carolinas.

Kevin Ryan

Operations Manager

Kevin graduated from East Carolina University with a degree in Construction Management, Kevin came to Summa after spending 5 years as a superintendent with a large general contractor in the Raleigh area. Kevin’s focus is on managing Summa’s field superintendents as well as serving as project manager on several projects.