Our Team


The GTS Staff

Gary Green_LR

Gary Green
Chief Executive Officer

Gary has been a leader in the design and deployment of computer networks, communications infrastructure and workflow solutions for hundreds of organizations in various sizes. Prior to


John Giordano
Managing Partner

John has over 30 years of experience working in the computer industry from tech support to development to management and ownership.  John comes to Green Technology after owning two other IT


Michael Peltz

Michael Peltz is a graduate of Suffolk County College in New York, where he obtained a degree in Humanities. In addition to this degree, Michael obtained an NC Certification from Surry Community College

Vaughn Groce
Director of Operations

Vaughn Groce has over 15 years of experience working in the computer industry from tech support to training to management. During this time, he has gained the analytical, organizational and

Colleen D. Gjefle
Website Design & Management

Colleen D. Gjefle began her career as a computer programmer with the US Air Force, but was quickly moved into a computer graphics / communications position once it was discovered that she was

Ryan Redfield
Network Administrator

Bio to come.

Andrew Sinigaglio
IT Technician

Andrew Sinigaglio is a graduate of Penn State University, having recently obtained his Bachelor’s Degree in Information Sciences & Technology. Although he graduated from Penn State’s Brandywine

Anthony Phillips
IT Technician

Bio to come.

Michael Giordano
Website Department

Mike Giordano, a graduate of Stockton University, received his Bachelor’s degree in Graphic Arts in 2015. Beginning as a graphic design major, Mike ended up studying web design later on in his college career and then interning here at Green Technology Services during his senior year.  

Brandon Heck
Sales & Marketing