[3] Arujau was born Azerbaijani descent family in Gomel, Belarus, and moved to the United States at the age of two, after his mother won the green card lottery.

[4] After a short stay in California, the Arujau family moved to Long Island, New York, where he would start wrestling at the age of ten, under his father's guidance.

He started wrestling on the varsity team as an eighth grader and placed second at the state tournament that year, losing to eventual teammate Yianni Diakomihalis in the 99-pound final.

[9] Arujau chose to grayshirt during his first year at Cornell, racking up a 9–1 record and a Cleveland State Open title while wrestling unattached during 2017.

[13] At the EIWA Conference Championships, Arujau placed second, losing a close match to eventual NCAA champion Pat Glory in the finals.

[15] Fresh off All-American honors, Arujau switched back to freestyle, cut down to 57 kilograms and placed fourth at the US Open National championships in April.

[17] Arujau then claimed a silver medal at the U20 World Championships in August, notably defeating returning champion Akhmed Idrisov in the semifinals.

[21] In January, Arujau competed at the prestigious Golden Grand Prix Ivan Yarygin, and was eliminated after a close opening match.

[23] In July, he defeated Sammy Alvarez at FloWrestling: Dake vs. Chamizo, and was set to wrestle NCAA finalist Jack Mueller at Beat The Streets in September, but was forced to pull out.

[28] Arujau then took part at the FloWrestling: RTC Cup in December, notably defeating NCAA champions Darian Cruz in one match and Nahshon Garrett twice, as well as Jack Mueller once again.

[53] In July, he took third at the Polyák Imre & Varga János Memorial Tournament, with a lone close loss to reigning World champion Zelimkhan Abakarov.

[59] Arujau was then expected to trim down to 57 kilograms in order to compete at the US Olympic Team Trials in April, with a bid directly to the semifinals as a World champion in a non-olympic weight class.

[65] Arujau became a two-time World medalist, clinging a victory over Olympic champion Zaur Uguev from Russia in order to earn the bronze.