Ioannis was born in Piraeus in 1950. He is Professor Emeritus of Criminal Law and Criminal Procedure, Faculty of Law, University of Athens. He studied at the University of Athens and at the University of Munich, Germany (Dr.Juris). In the years 1983-1984 he was a lecturer (Akademischer Rat) in Criminal Law and Legal Philosophy at the Faculty of Law, University of Munich). In 1986 he founded Ioannis Giannidis Law Office. From 2005 until 2007 he was Deputy Chairman and from 2007 until 2009 Chairman of the Faculty of Law, University of Athens. Since 2015 he is President of the Greek Association of Penal Law. He has been advisor to international and greek institutions and member of advisory committees to the Hellenic Ministry of Justice. For 10 consecutive years (2004-2014) he was at the board of the largest banking group in Greece (NBG). Since 1993 he was legal counselor to the National Bank of Greece and since January 2014, the Head Legal Counselor to the executive members of the Bank. Since 2014, he is also a member of the Legal Council of the Hellenic Banks Association. He is practicing criminal law since 1986 with emphasis on financial crime and has acted as defence/civil claimants’ counsel at the most important criminal law cases in Greece within the last 30 years. He is an expert in financial criminal cases (criminal tax law, fraud, embezzlement, breach of trust (misappropriation), bribery, money laundering related to financial crimes, competition, European and International Arrest warrant, extradition requests related to financial crime).