Born in Uttigen, Segessenmann completed an apprenticeship as a lithographer, and worked in various cities in Switzerland, then from 1924 until 1926 in Greece.
He then returned to Switzerland, and became prominent in the Swiss Lithographers' Union (SLB).
[1] In 1955, he additionally became president of the International Graphical Federation.
[2] Segessenmann was a member of the Social Democratic Party of Switzerland, and in 1936 he was elected as a city councillor in Bern.
He retired from all his posts in 1958, due to poor health.