John S Koker is an experienced Surveyor and Geographic Information System professional with more than 8 years of experience in Surveying, GIS, Remote Sensing, and Environmental Geoscience in the Mining and Construction Industry. John is the Managing Director and Founder of Vector Geomatics Technologies (VGT) Limited.

He has extensive professional experience in Land, Mining, and Aerial Surveying particularly GNSS Surveys, Mapping, Database: Design, Development and Implementations, Geographical Information Systems (GIS), Web GIS, Land Information System (LIS), Remote Sensing, Land Cover Change Detection, Above Ground Biomass Modelling, Hydrological Modelling, Statistical Analysis, and Environmental Assessments, Monitoring and Management using GIS and Surveying technologies.

John is a registered Geoscientist and a member with the Sierra Leone Institute of Geoscientists (SLIG). He holds a BSc (Hons) in Geography from the University of Sierra Leone, Fourah Bay College, and currently studying for a Master of Science in Big Data Analytics from Wrexham University, UK.

Professional and Technical Skillsets include:

• Surveying: DGPS (Leica and ComNav Differential), Levels (Leica Laser Level, Leica Dumpy Level), GEOVIA Supac, Maptek Point Studio & Point Modeller, Pix4D Mapper, and Leica Geo Office.
• GIS and Mapping: ArcGIS Enterprise (ArcGIS Pro Desktop and ArcGIS Online), Google Earth Pro.
• Drafting: AutoCAD, AutoCAD Civil 3D.
• Water Engineering: ArcHydro Tools Plug-In, FloodModeller Pro, HEC-GeORAS and GeOHMS_10.1
• Drone: SenseFly eBee, DJI Phantom 4 & 4 pro; DJI Mavic, Air 2S. DJI Mavic 3 Enterprise.
• 3D Terrestrial Survey: Maptek XR3 Laser Scanner.
• Hydro Survey: Seafloor HyDrone-RCV Survey Boat.
• Mobile data collection: ArcGIS Survey 123, ArcGIS Collector, KoBo Collect Toolbox.

John is responsible for:

• Strategic Business Development
• Operational Management of all Survey and GIS projects
• Setting organizational standards, objectives and providing direction for operations
• Focal person and voice that maintains and manages links between clients