In 1952, he joined the United States Air Force and was stationed in Korea during the Korean War, where he worked as a military photographer.
[1] In 1974, Biasiny-Rivera co-founded En Foco, an artistic collective centered on documenting Latino life, with photographers Roger Cabán and Felipe Dante.
Members of the group mostly developed a singular focus for their work, Biasiny-Rivera did not specialize, later stating that he "just wanted to roam and discover.
[2] In the 1990s, Biasiny-Rivera had artist residencies at Light Work and then the Belagio Center of the Rockefeller Foundation at Lake Como in Italy.
During this time, he created composite images using black and white photographs that he hand-colored and then surrounded with intricate borders and hand-written poetry.