Career
Zubieta started his playing career in the 1935-1936 season at the age of 17. His impressive performances earned him a call-up to the Spain national football team in 1936, making him the youngest player ever to play for Spain at the age of only 17 years and 9 months. Later in 1936 the Spanish civil war disrupted his playing career.
During the conflict he played for the Basque Country national football team
The team undertook a tour of South America and in 1939 Zubieta was signed by Argentine side San Lorenzo de Almagro. Zubieta stayed with the club for 13 seasons, playing 352 games for the club, scoring 29 goals.
In 1952 Zubieta returned to Spain, joining Deportivo de Louisiana Coruña where he played until his retirement in 1956 at the age of 38. After retiring as a player Zubieta took up management.
He had spells in charge of Athletic Bilbao (1962–1963) Real Valladolid (1963–1964) as well as managing in Portugal Belenenses and in Mexico Real Jaén (1969–1970) and Pumas Universidad Nacional Autónoma de México (1970–1974).
Zubieta also returned to Argentina working as manager of Club Atlético Atlanta amongst other teams. He died in Buenos Aires on 28 October 1985 of amyotrophic lateral sclerosis.