About Us

With over 30 years of computer experience we are your source for computer and network solutions. Our background includes fortune 100 corporations, small businesses, not-for-profits, and home offices.

We provide a variety of services including: virus-removal, security checks, computer upgrades, troubleshooting, and network installation. For more information click here for Service List.


"John Cosmos is a knowledgeable and highly skilled computer expert you can depend on. He works hard to stay on top of all the latest technology, news and alerts affecting his industry."
Suzanne Corr
Executive Director
Cary Grove Area Chamber of Commerce

"John has really helped me with my computer problems, even though I live in Florida. His knowledge and professionalism is outstanding and I would recommend John to anyone needing computer help."
Bill Hood
Realtor Sandals Realty

We have been working with John and CynJon Technologies for several years now … it is such a great relief to have their service at our fingertips … John is a true professional, his expert advice and technical assistance over the years is so valued by both myself and my staff … John is a one-man IT department, his advice is always spot on. We truly appreciate his always being available for us and our computer needs.
Dr. Greg Cherne
Cherne Family Chiropractor

During our recent computer "Crash" we thought we were about to loose a great number of our current customer records. We appreciated your quick response and the professional manner in which you dealt with our situation. Thank you for helping us get back the records we thought were lost and allowing us to return to what we do best, service our customers.
Flameco, Heating & Air Conditioning, Inc.

We have worked with John for almost 10 years. He is efficient, knowledgeable and great to work with. He responds quickly to our calls and is reasonably priced for his level of expertise.
Johnson Eye Care, Cary IL


  • Member of Cary Grove Area Chamber
    of Commerce


  • Microsoft Registered Partner


  • GFI Partner


  • Threat Track Security Partner

Contact Info

phone: 847-927-5127
e-mail: info@cynjontech.com
contact page