He trained as a bricklayer and worked as the profession in South Tyrol from 1915 to 1916 and then in both Liechtenstein and Switzerland from 1917.
[2] He was elected to the Landtag of Liechtenstein in 1939 as a member of the Patriotic Union as a part of the unified list between the party and the Progressive Citizens' Party for the formation of a coalition government, where he served until 1949.
[3][4] During this time, he was a member of the Landtag's finance and state committees.
In the February 1953 Liechtenstein general election, Sele ran as a candidate for the Workers' and Peasants' Party, a party that emerged from the Liechtenstein Employees' Association.
[1] Sele married Berta Kindle (28 August 1906 – 6 January 1970) on 7 April 1932 and they had three children together.