Jorge Arévalo is a computer engineer from Universidad Autónoma de Madrid, UAM. He started developing web applications with JavaScript, PHP, and Python. In 2010, he began working with PostGIS and GDAL projects, after participating in GSoC 2009, creating the PostGIS Raster GDAL driver. He also writes a blog on GIS at http://www.libregis.org. Jorge Arévalo has co-written the book, Zurb Foundation 4 Starter, Packt Publishing. He has also worked as a reviewer for the books, PostGIS 2.0 Cookbook, OpenLayers Beginner's Guide (2nd edition), Memcached, Speed Up your Web Application, and QGIS Cookbook, all by Packt Publishing.
Gagan Bansal has done B.Tech in Civil Engineering and then pursued M.Tech in Remote Sensing. He is experienced in maps application development, geospatial database design, and large-scale mapping using satellite data and aerial photographs. He is also experienced in understanding various market problems and deriving a feasible GIS solution using open source software and database. Currently, he is working with Rediff.com as a maps architect and engaged in developing applications for visualization and overlay of news, socioeconomic data, and business data on maps.
Christopher Jennison is an application developer working in Western Massachusetts with experience in GIS application development and mobile platform development. He has worked in web advertising, mobile advertising and application development, and data science and mapping applications. He has worked for HitPoint Studios, as a brand game developer, and The United States Geological Survey, as well as his own private contracts.
Arnaud Vandecasteele is a map lover and an open source / open data evangelist. After his PhD in computer science and GIS, he decided to move to Canada to conduct research on OpenStreetMap and to promote the use of Open Source GIS software. His experience with OpenLayers started from the very beginning of the library in 2006. From his website (http://geotribu.net), he wrote several tutorials to help beginners to use OpenLayers. Currently, Arnaud runs a GIS consultancy firm called Mapali (http://mapali.re/) that creates online mapping applications and provides consultancy services in the fields of web cartography and online GIS using open source software to a wide range of clients in the Indian Ocean (Réunion island, Mauritius).