University professor, head of the Department of Criminal Law at the Faculty of Law and Administration of the Nicolaus Copernicus University in Toruń. Co-author of two commentaries to the Penal Code (edited by M. Królikowski, R. Zawłocki and V. Konarska-Wrzosek), co-author and editor of commentaries to the Executive Penal Code and the Code of Petty Offences, and author of about 150 scientific publications in the area of substantive criminal law, criminal proceedings and criminal enforcement law. Vice-president of the Criminal Law Scientific Society in Warsaw, member of the Polish Penitentiary Society in Kalisz and the Association Internationale De Droit Penal. He was awarded the Medal of the National Education Commission. He completed judge training and passed the judge exam and is a professionally active solicitor at the Kuyavian-Pomeranian Bar Association.