Shmuel Schnitzer studied law from 1972 to 1976 at the Hebrew University of Jerusalem, and was then licensed as an attorney.
Schnitzer serves as a member of the presidium of the Diamond Manufacturers Association, chairman of its Justice Committee and a member of the Advisory Committee of the Shanghai Diamond Exchange, a position he has held since the founding of the exchange.
In January 2016, he was elected chair of the board of the directors of the Israel Diamond Institute, and served this office until 2018.
Schnitzer was president and chairman of the Beitar Tel Aviv Bat Yam F.C.
This was a peak period for the team; in 2008, it reached the national semi-finals, despite its position as a third-tier club.