By the age of eight, Tumarkin was discovered by casting director Yael Aviv when sitting in a cafe with his father. The next day, Tumarkin went to his first audition. During his childhood, Tumarkin appeared in many different TV commercials. He got his first bigger acting job at the age of ten in the TV film
Who stole the show? (Hebrew: מי גנב את ההצגה). At the age of twelve, he appeared in the film
Shisha Million Rasism. He played a mute child and
Holocaust survivor. From there, his career took off with a leading role in a TV series called
Ha-Yeladim Mi'Givat Napoleon (
Napoleon Hills Kids). In 2009, Tumarkin sang "Power of Thought" at the
Festigal and won the second place for his performance of the song. In the same, year he co-starred with
Amit Farkash in the TV series
Split playing Leo Zachs, a 600-year-old
Vampire who looks like a teenager. From 2009 until 2012, Tumarkin was awarded four times in a row with Israeli Television Academy Award as the best actor. In 2012, he played a main role in the award-winning Israeli drama film
Rock the Casbah. In 2014, Yon Tumarkin got a main role in the TV series
The Nerd Club. In 2015, Tumarkin starred along
Yael Grobglas and
Danielle Jadelyn in
JeruZalem, an English-speaking Israeli horror film. In 2016, Tumarkin appeared in the Israeli child series
Susey Pere (
Wild Horses) as Libby Yahav. In the same year it was announced that Tumarkin was cast in the TV series "המלאך השומר שלי" (My Guardian Angel). The series deals with a group of adolescents who all have their own guardian angel. In 2018, he played the graphic designer Reuben in an episode of the British crime series
McMafia. == Personal life ==