Developer with more than 20 years of experience. Variety of knowledge and fields. Databases, programming, developing, statistics, websites, analysis, GIS, e-commerce, design, apps. SQL Server, MS Access, MySQL, Sqlite, Javascript, PHP, Python, VBA, Excel, R, Wordpress, CPanel, QGis, ArcGIS, Transport Modelling, Prestashop, GPS, Maps, Android, Xcode.