Thanasis Kaleas was born in Athens, Greece in 1990. In 2007, he graduated from the Zanneios Model High School. In 2011, he graduated from De Montfort University of Leicester (LLB Law Degree) and in 2012 he was awarded a Master of Laws (LLM in Business Law) from the same university. In 2015 he was admitted to the Piraeus Bar Association.  In 2019 he was appointed to the Greek High Court.

In 2013 he started his practice in A.V. Labropoulos & Associates Law Office and LLPO Network Office in Piraeus, as a trainee lawyer, where he became an associate in 2015 after being admitted to the Piraeus Bar Association.

He specialises in Commercial & Corporate Law, Criminal Law, Tort cases and he has deep knowledge of the relevant legal framework in Greece and the UK.

Thanasis speaks fluent Greek, English, and maintains a very good knowledge of the French language.