First Assistant. Archaeological Survey of South India in 1882. He worked as acting lecturer on Art and Geometry in the School of Arts. Madras, between 1884 and 1888. He was Professional Adviser to Government on the conservation of ancient monuments; Member for Archaeology on the Sub-Committee on the Public Services Commission in 1887. Rea was deputed to examine and report on certain Pre-historic burial places in Madras, Chingleput, and Kodaikanal in July 1887. Rea worked as assistant editor, "Epigraphia Indica" and Record of the Archaeological Survey of India in 1888. He took charge as In charge of the Office of the Archaeological Survey of Western India from 9 July to 8 October 1889. Archaeological Surveyor in 1890; Superintendent, Archaeological Survey, Madras, 1891.[3] Rea was deputed to examine and report on the ancient remains in Coorg in 1893; Alexander Rea became the first Superintendent of Archaeological Survey of Southern India in 1902.[4] Honorary Assistant Superintendent, Central Museum, Madras, 1903; He retired in 1913 as Superintendent, Archaeological Survey of Southern India.[3] His body was buried in Wesleyan Church, Bangalore on 5 February 1924.