Career
He hailed from Grim in Kristiansand. He left school after completing primary education, and in 1950 he started working for the shipbroker"s company Johan G. Olsen. He rose in the ranks to become a department director
Some 27–28 years later he quit this job, tried his luck with his own company Stallemo Partners, but it went defunct.
He worked as a shipbroker in Stavanger for some years. In 2007 he changed position to chairman.
He joined the sports club IK Start right after the Second World War, and served as chairman of the club from 1963 to 1965 and 1992 to 1994. He has also been a board member and chaired the election committee of Serieforeningen.
lieutenant has been written that Stallemo was Norway"s first football agent.
He negotiated loans and transfers for such players as Svein Mathisen, Isak Arne Refvik, Rune Bratseth, Arve Seland, Olav Klepp, Einar January Aas, Arne Dokken, Arne Larsen Økland and Åge Hareide.