Northern Virginia computer and network services

About Us

Our goal is to offer high quality, yet affordable, on-site computer and network services for homes & home offices, small businesses, and medical practices.

Some highlights of our business:


  • 24/7 on-site computer and network services
  • Over 750 satisfied customers in 7+ years of business
  • Emergency computer repair specialists
  • No trip charge or travel fees
  • Same reasonable rate day, night or weekend
  • You are assigned a dedicated technician
  • Ability to contact your technician directly
  • Technicians carry a full inventory of computer equipment
  • Remote support (businesses and medical practices)
  • A very high commitment to quality

Our Team

Paul Kamberis

Paul Kamberis, Owner & Senior Technician
Paul founded Paul on Call Computer Service in January, 2003, with the goal of providing quality IT consulting services to Northern Virginia. He has over 16 years of IT experience, holds CompTIA A+ and Network + Certifications, and is a Microsoft Partner. Paul is a member of the WT Woodson HS class of '97 and earned his B.A. in Anthropology from JMU.

Paul Kamberis

Service Coordinator
The Service Coordinator is the primary customer contact and works directly with clients and technicians to coordinate service appointments.

Sabrina Kamberis

Sabrina Kamberis, Billing
Sabrina is available to assist clients with billing and payment questions. Sabrina holds a B.S. in Business Administration from Strayer University.

Andrew Shevitz

Andrew Shevitz, IT Consultant
CompTIA A+, Network+, and Cisco Certified Technician with over 10 years IT Experience. Andrew received his A.S. in Information Technology from NOVA.

Thomas Apostle

Thomas Apostle, IT Consultant
CompTIA A+ Certified Technician with over 10 years IT experience. Thomas received his BS in Management Information Systems from USF.

Paul Kamberis

Steven Galler, IT Consultant
MCP, MCSA, and BICSI Installer Level I and II Certified Technician with over 13 years IT Experience.


Northern Virginia computer and network services                                   Washington DC IT solutions and support                                   Maryland computer and network technicians