Huhtamo entered film in 1977 and has appeared in over 30 Finnish films and TV series between then and the present[when?] although mostly in film.
Huhtamo starred in the 1977 film alongside actors Antti Litja and Kauko Helovirta in Jäniksen vuosi a film about a Finnish man from Helsinki who leaves to find a new life in the wilderness.
In 1978, he appeared as private Kumpulainen in The Guarded Village 1944 (Finnish: Vartioitu kylä 1944).
His last appearance was in 2005 in Lapaus.
For videogames, he has given the Finnish voice to Master Eon, a major character in the Skylanders reboot series of the Spyro the Dragon franchise.