After his school education, Sirisena moved to Colombo to join the Sri Lanka Railways as a Special Apprentice in 1969. While establishing his career as an actor in theater, Sirisena went to Oman in 1970 to work as a quantity surveyor for two years. After returning home, he worked as a technical officer at the Victoria Dam project. Then he went back abroad in 1979 and returned to Sri Lanka in 1984.
