[4] After a year of competition, he won the WKN Scandinavia K-1 64.4 kg title by stopping Jonas Berglund on October 17, 2015.
[5] On December 19, 2015, Assouik travelled to Russia to face Aleksei Ulianov for the WKN Oriental rules International 66.7 kg title.
On August 6, 2016, Assouik suffered his first defeat as a professional when he travelled to Changzhi, China to face Tie Yinghua at Glory of Heroes 4.
[10] Assouik was scheduled to face Maikel Garcia for the vacant ISKA K-1 world -72.5 kg belt at Siam Warriors IV in Denmark.
[13] The 2018 Tatneft Cup Finals happened on December 7 and saw Assouik defeat Vladislav Ukrainetshe by extension round decision and win the title.
He defended his K-1 world title on his own promotion called Assouik Fight Night against Karim Guettaf on November 13, 2021.
[17] On December 10, 2022, Assouik faced Nicolas Mendes at Muay Thai For Life 4.0 in Sweden for the WMC European 168 lbs title.