John obtained a Bachelor of Applied Science in Surveying and Mapping from the Western Australian Institute of Technology in 1981. He then spent seven years with Associate Surveys International, a large Australian survey company where he worked both as a surveyor and as a software engineer in the groups computer centre. As satellite navigation came into surveying, John continued his studies of computing and GPS to obtain his Graduate Diploma in 1987 and Master of Applied Science in 1990.

During the late eighties John helped Associated with the acquisition and use of GPS technology for use in off-shore oil exploration. In 1991, John moved to the USA to take up the position of senior software engineer with Ashtech Inc, a US GPS receiver manufacturer. Here he worked on the development of the company's GPS post processing programs, later managing the companies post processing development group.

John returned from the USA in 1995 as one of the founding directors of Rinex Technology and is responsible for the company's research and development.

Rob graduated from the Western Australian Institute of Technology in 1983 with a Bachelor of Applied Science in Surveying and Mapping. Rob was granted his surveyors licence in 1987 to practice in Western Australia. Rob then joined the Australian Antarctic Division in 1989 as a glaciological researcher based initially at the University of Melbourne and later at the Institute of Antarctic and Southern Ocean Studies at the University of Hobart. Rob was awarded the Australian Antarctic Medal in 1995 for outstanding services to the Antarctic.

Rob returned from Antarctica in 1995 as one of the founding directors of Rinex Technology and oversees the company's operation.