He was born in 1947 in the village Klimautsy, Dandyushansky region of the Moldavian SSR.
He graduated from the Zhitomir technical college of wood mechanical working, the Kiev Engineering-Constructing Institute, the German Academy of Management.
He is Academician of Mining Sciences.
Vainshtok tbegan his career as a worker at the Baltsk furniture manufacturing industrial complex.
He has been engaged in the oil industry since 1982, when he was appointed deputy head of the oil and gas extracting department 'Povkhneft'.
1986-1988 - deputy general director on personnel and services of 'Bashneft' on Western Siberia.
1988-1993 - deputy general director on social issues of 'Kogalimneftegas'.
1993-1995 - general director of 'LUKOIL-Kogalimneftegas'.
Since 1995 - vice-president of the oil company 'LUKOIL', general director of 'LUKOIL-Western Siberia'.
1999 - 2007 - the President of Transneft, JSC
2007 - 2008 - the head of the Olimpstroy, state corporation responsible for preparing Sochi for the 2014 Olympics.
After leaving the Olimpstroy in 2008, Vainshtok went to live in London.
In the spring of 2010 moved to Israel.
Semen Vainshtok speaks English.
Married. Has one daughter.