Suman's father had played briefly at
National Soccer League level during the 1989–1990 season. Suman began playing for Colo Cougars, where he played until the age of 11. He then spent two years with
Nepean FC, where he took up goalkeeping at 12. Suman was then signed to
Sydney United and the
Football New South Wales National Training Centre.
Western Sydney Wanderers Suman was signed to the
Western Sydney Wanderers youth team in 2015. He played five times for the Wanderers in his first National Youth League season. In 2016, Suman joined the Wanderers team in the
National Premier Leagues NSW. In May 2017, Suman signed a one-year scholarship contract with the Wanderers. Aged 17, Suman was the youngest member of the Wanderers 2017–18 squad. After the 2017–18 season, Suman had trials with
Rangers and
Brighton & Hove Albion. In July 2018, his scholarship contract was extended by two years.
Macarthur FC In September 2020, Suman joined new
A-League club
Macarthur ahead of their inaugural season.
Cove Rangers After a trial, Suman signed a two-year contract with Scottish team
Cove Rangers in 2023.
Aberdeen Suman moved to
Scottish Premiership club
Aberdeen in May 2025. ==International career==