John has been the President of Independent Consultants, Vocational Rehabilitation Inc., and initiated the position of Youth/Career Coordinator with the Braille Institute of America. The California State Rehabilitation Bureau appointed him as an Independent Vocational Evaluator on more than 200 cases, and he has served as an expert witness for many legal cases pertaining to disability and work issues.

John is the author of Working Life: Working-Age Adults with Blindness or Low Vision on the VisionAware website.

John spearheaded the development of the Braille Challenge, an annual braille skills contest that involves hundreds of braille reading students across the United States and Canada. He is a frequent instructor and speaker at conferences and professional training programs.