After his ordination Fr. Tamarut served as an assistant parish priest in
Mali Lošinj from 1957 until 1962. In 1962, he continued his studies at the
Pontifical Gregorian University in
Rome,
Italy with a
Doctor of Canon Law degree in 1966 and at the
Pontifical Atheneum of St. Anselm in
Rome,
Italy with a master's degree of the
Liturgics in 1967. From 1967, when he returned from
Italy, until his death, he served as professor of liturgy at the Theology in the
University of Rijeka. In the
Diocese of Krk, he was appointed the vice-chancellor in 1967 and a personal secretary to Bishop Karmel Zazinović. From 1973 to 1976, he was the parish priest in
Punat, and from 1976 to 1979, he served as rector of the Major Theological Seminary in
Rijeka. After that, in 1979, he was appointed Chancellor, then
Vicar General of the Diocese of Krk, and in 1980, Rector of the
Cathedral chapter. ==Prelate==