Polish poster artist, graphic designer, mountaineer, climber, skier, architect, and filmmaker entered his posters Ski Poster and Hockey Poster for the 1932 L.A. Olympics together with rower and artist [Jerzy Skolimowski]. Skolimowski won a silver medal and a bronze medal with the coxed pairs and the coxed pairs in Los Angeles. Osiecki served in the Polish Army during World War I. He earned his architect engineering degree in 1929 at the Warszawa University of Technology. In the years 1933-34 and 1936-37 Osiecki took part in two Polish expeditions in the Andes. With his companions he made the first ascents on peaks and broke several Polish height records on Aconcagua.
At the beginning of World War II, Osiecki participated in the defense of Lviv in 1939, and later immigrated to London, where he worked in the Office of Film for the Polish Ministry of Information and Documentation. Beginning in 1927 Osiecki made short films of mountaineering expeditions. During the first Polish expedition he was responsible for the Andean film documentation. He was among colored poster creators for the 1932 Ice Hockey World Championships in Krynica. He also designed the first versions of the Mountain Tourist Badges, and after the war he participated in exhibitions in Bruxelles, Roma, Helsinki and New York.