Both Oleg and his younger brother Gleb graduated as engineers in 1927, and both settled in the United Kingdom.
As an associate of Dorman Long, Kerensky assisted on the landmark 1932 Sydney Harbour Bridge.
As an associate, and then a partner, in the firm Freeman Fox & Partners, Kerensky designed many British road bridges and structures such as the 1951 temporary Dome of Discovery in London, the largest dome in the world.
After his death in London, the same institution began their Kerensky Memorial Conferences beginning in 1988.
Oleg Junior was in the 1981 film Reds portraying his grandfather when he was the head of the Russian Provisional Government.