Profile image of repairman4
Flag of United States Rockford, United States
Member since September, 2010
3 Recommendations


Primarily skills in performance programming, C++/C, Objective C, Fortran, Parallel Programming, pthreads, GUI development, Cocoa, JNI, and Network programming (TCP/IP, Encryption).Specialize in client/server applications over TCP/UDP sockets, UDP hole punching. Over 25 year experience in these: OS X, UNIX, Linux, Windows, Solaris. Also, specializing in License Management
$50 USD/hr
26 Reviews
  • 70%Jobs Completed
  • 100%On Budget
  • 97%On Time
  • 3%Repeat Hire Rate

Recent Reviews



Jan 2009

Persistent Security is a software company I started several years ago after developing license software for 20+ years for a private company. My product, SafeGuard LM is the culmination of my work. SafeGuard LM is a great solution for large and small businesses that develop software that needs protecting from casual copying to full blown hackers. It has everything you need out of the box, including a Product Activation Server so you can activate your software over the internet. My passion in developme


Bachelors of Science

1979 - 1984 (5 years)


Windows NT Internals (1999)

Microsoft Corp.

This was an intensive developer class taught by MS personnel in Redmond Washington. One primary objective was to show how to update running application servers in place without having to shut them down.


Automatic Software Updates over the Internet

Back in the late 90's I proposed having users installed software automatically updated over the internet. Back then it was a big deal because we were still coming in over dialup lines. None the less, higher speed internet connections were on the rise and I implemented an automatic software update utility that would be able to patch our software over the Internet. Of course, in todays world, this is expected behavior. No one even thinks about it anymore but at the time and with the much slower in