Ezatolahi became the youngest goalscorer in the history of the national football team at the age of 19 years and 42 days after scoring in a 3–1 victory against Turkmenistan on 12 November 2015. This record was broken by 17-year-old Allahyar Sayyadmanesh on 6 June 2019.Ezatolahi’s father, Nader, and uncle Ghader Ezatolahi played for Malavan in the Takht Jamshid Cup. Saeid started his career with Shahrdari Bandar Anzali in 2008 as a youth player.He moved to the Malavan youth academy in the summer of 2010 and was promoted to the first team in July 2012.