Dr. Markus Sitzmann studied chemistry at the University of Erlangen-Nuremberg, Germany, and received his degree in Organic Chemistry there in 1999. For his PhD, he joined the research group of Johann Gasteiger at the Computer-Chemistry-Center of the University of Erlangen-Nuremberg and developed new methods in cheminformatics, particularly in the field of computer-assisted synthesis planning. During his subsequent postdoctoral position at the U.S. National Cancer Institute of the National Institutes of Health (NIH) he worked in the field of chemical information, specifically the unique identification and efficient indexing of chemical structures in large chemical structure databases, and the analysis of ligand conformational energies of ligand structures in the Protein Data Bank (PDB) database. He also implemented and maintained some well-known and publicly available online resources at NIH, like the Chemical Identifier Resolver and the NCI Database Browser. In 2008, he was promoted to Research Fellow and in 2012 to Staff Scientist at NIH. In 2013, he joined the development team of STN at FIZ Karlsruhe as a scientific programmer. Since 2010, he is member of several technical working groups steering the further development of the IUPAC International Chemical Identifier (InChI), an international effort for the development of a unified structure identifier available to any provider of chemical information. In January 2018, he joined the Board of Chemical Structures Association (CSA) trustees.