About

Hi, I’m Mark Johnson.

I’m a freelance software professional based in San Franisco, CA. I do iPhone consulting with a network of  colleagues including Rob Hunter. We provide iPhone app design, development, training and coaching. I also consult in the areas of performance engineering and software and systems architecture. I develop and market my own apps: Smart Caller, Hit Tennis, and Duck You Undo! are available now in the app store… and I own and operate Telecom Market Solutions.

You can find me on LinkedIn : http://www.linkedin.com/in/markjamesjohnson

email: markj at markj dot net       twitter: @markjnet