Shamir Stern was born on January 1, 1969 in the United States to Sheila and Shalom. When Shamir was 10 years old his family made aliya and lived in Jerusalem. Shamir studied in Maimon Elementary School and then at the Himmelfarb High School. He was active in Bnei Akiva and the Civil Guard.
In January 1987 Shamir was drafted into the IDF and served in the Engineers. He was assigned to operate the base computers, even though he hoped to continue in combat duty. On December 8, 1987 Shamir fell in the line of duty. He was buried in the Har Herzl Cemetery in Jerusalem.