Oskar Hansson is head of the Reporting officers and research unit at the department of Forensic Sciences, Oslo University Hospital (OUS), Norway. He started his career at the national forensic laboratory (NFC) in Sweden in 2002. In 2008 he was recruited to Norway to work with the implementation of a new workflow for reference sample analysis. Between 2017 and 2019 he was research group leader for the Forensic Genetics Research Group at OUS. He has 18 years' experience in forensic genetics, working primarily with laboratory development, automation, public procurement, validation and implementation of new methods. His background is in molecular biology and programming and a PhD degree in forensic genetics. He has provided training in various international mixture interpretation and validation workshops. Oskar has developed and maintains the STR-validator R package, which averaged in excess of 500 monthly installs during 2019.