Janez Boljka was born in Subotica. He studied sculpture at the Academy of Fine Arts in Ljubljana. He graduated in 1956, and completed his specialization in sculpture under Professor Karel Putrih and a specialization in graphics under Professor Riko Debenjak in 1961.
In 1966, he won the Prešeren Fund Award for both his sculpture work exhibited at the Slovene Fine Arts Association exhibitions in the previous year and the Hostages monument at the Ljubljana cemetery. In 1988, he won the Prešeren Award for his lifetime achievement.