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 600 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 KamberisPaul Kamberis, Owner & Senior Technician
Paul founded Paul on Call Computer Service in January, 2003, with the goal of bringing affordable computer service 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.


Sabrina KamberisSabrina Kamberis, Co-Owner
Sabrina is the primary customer contact and works directly with customers and technicians to coordinate service appointments. Sabrina holds a B.S. in Business Administration from Strayer University.




Andrew ShevitzAndrew Shevitz, IT Consultant
Andrew is an IT consultant and the lead technician for residential computer service. He also works with Paul on large business projects as a secondary technician. Andrew is CompTIA A+ and Network + Certified and has over 10 years of experience fixing computers. Andrew received his A.S. in Information Technology from NOVA.


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






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