Sakis Kechagioglou was born in Veroia, Imathia on 16/12/61. His parents were Theodoros Kechagioglou, an employee of the State Treasury, and Antigoni Tsaousi, a teacher. He has two brothers, Giannis a banker, and Nikos, a lawyer in Veroia. Since his teenage years, he has been involved in community affairs. In 1979 he was admitted to Law School at the Aristotle University of Thessaloniki. During his studies he was actively involved in student syndicalism from various positions.

He went to the USA in 1985, with letters of recommendation by the professors of Criminal Law Ioannis Manoledakis and International Relations Theodoros Kouloubis as well as by the former Prime Minister Konstantinos Mitsotakis. The support of Archbishop Iakovos of North and South America, who granted him the Archdiocesan scholarship, was also important. He was awarded a Master’s degree (MA) in International Affairs from the School of International Service (S.I.S) at the American University in Washington D.C. During his graduate studies, he worked in the U.S. Senate as Staff Assistant to the Senate Foreign Relations Committee and in the office of the Committee’s Republican Leader, Senator Jesse Helms of North Carolina.

After his military service, he served as Special Advisor to the Secretary of State Miltiades Evert until November 1991, when he began his legal career in the office of the criminal lawyer Alexandros Lykourezos. In the decade that followed, he undertook and handled, in cooperation with A. Lykourezos or on his own, important cases such as those of Georgios Koskotas (embezzlement at the Bank of Crete), Iosif Vayonis (homicide), Georgios Ventouris (family law), Georgios Skiadopoulos (homicide), Panagiotis Vlastos (homicide) and Dimitris Kondyliou – African Cape (drug trafficking).

Sakis Kechagioglou established his law firm in October 2001, at 3 Sekeri Street, Kolonaki, and since then he has handled a number of high-profile criminal cases. Inter alia, he was constituted as civil party in the trial of the former minister Georgios Petsos in the 17^th November trial, and represented the plaintiffs’ parents and relatives of the victims of the tragic accident in Tempi. He also took up the defense of Manos Dimitrokalis (Satanists of Pallini), Christos Voulgarakis (infanticide), Theo Theodoridis (drugs), Alket Rizai and Soula Mitropia (Plunder, Criminal Organization and Escape) Apostolos Petrakis and Charalambos Moustakas (abduction of Pericles Panagopoulos), Salina Karavela(Siemens case), Konstantinos Gkratzios (Vatopedi case).

Sakis Kechagioglou is a member of the Athens Bar Association, the Union of Greek Criminal Lawyers and the Union of Criminal Lawyers and Active Lawyers. He served as Legal Advisor to the former Prime Minister, Konstantinos Mitsotakis. He is also Legal Advisor to the Patriarchate of Alexandria and All Africa under Patriarch Theodore II and to the Archdiocese of Thyatira and Great Britain of the Ecumenical Patriarchate of Constantinople.