Lachezar Filchev received his B.Sc. in Geography (2000-2004) from Sofia University St. Kliment Ohridski, followed by an M.Sc. in Physical Geography and Landscape Ecology (2004-2006) from the same university. He also holds a Ph.D. in Remote Sensing of the Earth and Planets (2007-2012) from the Space Research and Technology Institute, Bulgarian Academy of Sciences (SRTI-BAS). He was promoted to Associate Professor (2014) and Full Professor (2022). Since 2019 he has been elected Head of Department Remote Sensing and GIS at SRTI-BAS. His research topics include: hyperspectral remote sensing, field spectrometry, geographical information systems (GISs), landscape ecology, environmental management, and cartography. He was a National Representative at the GEO High Level Working Group (HLWG) and the Copernicus User Forum (CUF) at EC.