General director
In 1929, Seyrig was called recommended by the master of Levantine archaeology René Dussaud and was appointed General director of antiquities of Syria and Lebanon which were under French mandate. Seyrig created the French institute of archaeology in Beirut which he headed for 20 years. He moved to New York City in 1942 where he worked as a special envoy of The Free French Government until the end of the war then he returned to Beirut.