Meet the team
Sigma Seven was formed in 2000 by four mapping, data management and GIS experts. Recognising the growing demand for flexible and affordable mobile map-based solutions in all organisations with field workers, the company developed the GeoField product suite.
The team has continued to develop Sigma Seven into one of the leading innovators in the field of mobile mapping and workflow.
Paul Reid | Mark Ketteman | Donald McGarrie | Andrew Coleman | Wendy Rayner
Paul Reid
Co-founder | Director of Product & Technology | Managing Director
Co-founder and managing director of Sigma Seven, Paul is focused on building practical solutions which meet the specific needs of field workers whilst ensuring Sigma Seven remains at the forefront of mobile mapping technology.
Paul has extensive experience of geospatial technologies gained from 15 years in the industry. He has particular expertise in mobile GI solutions which he has developed since their emergence in the 1990s.
Prior to forming Sigma Seven, Paul managed a joint UK-US software development group, and then went on to establish his own specialist GIS consultancy. Paul has an honours degree in Software Engineering from Edinburgh Napier University, and is a member of the Institute of Directors.
Mark Ketteman
Sales and Marketing DirectorMark brings over 25 years of business development experience in the GIS and CAD industries to Sigma Seven, and is a specialist in the introduction and adoption of mobile technology.
Before joining Sigma Seven, Mark was CEO of the Geospatial Solutions Division of Tadpole Technology plc, where he developed revenue tenfold from 2000 to 2006. In 2004, Mark was appointed as a main Board Director of the company. Its geospatial business unit was acquired by ESRI UK in 2007.
Mark has also worked with Conic Systems (purchased by Tadpole in October 1999), Informed Solutions, Sokkia and NCR. After graduating from the Mining Engineering department at the University of Nottingham, Mark undertook research into the application of automated mapping systems and was awarded a Ph.D. in 1985.
Donald McGarrie
Utilities Business Manager
Donald McGarrie brings 30 years experience of working in the Utilities sector to Sigma Seven. As a member of ScottishPower’s senior management group, Donald led several electricity related network businesses, including Customer Services, Control Centres and Connections. He was also Operations Manager for their gas business and Delivery Manager for Core Utilities Solutions, ScottishPower’s multi-utility infrastructure builder. During his time with ScottishPower he led several major change initiatives that included GIS and Field Mapping.
Donald holds a B.Sc (Hons) from Edinburgh University, is a Chartered Engineer and is a member of the Institute of Engineering and Technology. He has attended management courses at Wharton Business School in the USA, and London Business School and Ashridge in the UK. His international experience includes Pacificorp in the USA, a cultural exchange to Kyushu Electric Power Company in Japan and as a member of a DTI delegation to the Indian States of Tamil Nadu and Karnataka.
Andrew Coleman
Strategy, Partnerships & New Business Development
With a wealth of experience in IT, strategy and partnerships, Andrew focuses on new business development for Sigma Seven, and is interested in mobile access to software and data, web services, innovation and the impact of technology on society.
Prior to joining Sigma Seven, Andrew held several international management roles, including: European principal of a technology investment group; an advisor to BT New Ventures; and head of technical strategy, alliances and partnerships for Fujitsu working in USA, Europe and Australia.
Andrew has lectured and researched in Information Management at Napier University Business School. He holds a first class honours degree from the University of Leicester, a Masters in Computational Theory from the University of Edinburgh, and is published in computing and game theory.
Wendy Rayner
Environmental AdvisorWendy works closely with the management team on the development of solutions for the environment sector and on our environmental and quality management. A senior environmental professional with a successful track record in commercial, public and academic sector consultancy, Wendy has a technical background in regulatory compliance and has provided strategic advice to public, commercial and academic sector including the Ministry of Defence, National Health Service, Department of Transport, and the Health & Safety Executive.
Wendy is also a specialist on UK and international waste management and chairs a leading UK Industry group.