Born in Sarajevo, Sušić emigrated with his family early in his life to Belgium. He started training with the second-tier Visé, before moving to the youth side of Genk. At the age of 16, he moved to Standard Liège. In August 2010, he was called up to the Belgium under-19 side, featuring in two matches as a substitute, playing a friendly match for Standard Liège first team as well. Not breaking through, he continued playing for the team's youth sides.
On 29 August 2016, he rejoined his once youth club Genk in a transfer worth approximately €2 million. He made his first appearance for Genk against Standard Liège on 11 September. Sušić scored his first goal for the club against Athletic Bilbao in UEFA Europa League group game. On 7 August 2017 Sušić joined Maccabi Tel Aviv on a one-year loan deal in order to get more minutes.
Antwerp
After falling to get regular first-team football, his loan spell at Maccabi Tel Aviv was ended in January 2018. Consequently, Sušić terminated his contract with Genk and signed for Antwerp until June 2019. He had to wait for over two months on his official debut, which came in a league game against St. Truiden.
Venlo
In July 2018, Sušić signed a one-year contract with Dutch club Venlo, with an option for additional year. He debuted in a competitive game on 11 August against Willem II. On 26 August, he scored his first goal for the club against Utrecht.
TSV Hartberg
On 19 October 2019, Sušić signed a one-year contract with Austrian club TSV Hartberg.. After playing only two league matches for Hartberg, he was released by the club in January 2020.
Sarajevo
On 1 February 2020, Sušić joined Bosnian Premier League club Sarajevo, signing a two-year contract with the club. He made his official debut and scored his first official goal for Sarajevo in a 6–2 league win against Tuzla City on 22 February 2020. Sušić won his first league title with Sarajevo on 1 June 2020, though after the 2019–20 Bosnian Premier League season was ended abruptly due to the ongoing COVID-19 pandemic in Bosnia and Herzegovina and after which Sarajevo were by default crowned league champions for a second consecutive time.
International career
Sušić was eligible to represent three nations on senior level: Belgium, Croatia and Bosnia and Herzegovina, having played for Belgium on various youth levels. In October 2013, he confirmed that he would play for Bosnia and Herzegovina. He received his first senior call-up in February 2014, for a friendly game against Egypt, and debuted in that game on 5 March. Later that year Sušić was named in Bosnia and Herzegovina's squad for the 2014 FIFA World Cup, which was the country's first major tournament. He made his competition debut against Nigeria on 22 June.
Personal life
Tino-Sven is the son of the former Yugoslavia international Sead Sušić and the nephew of Safet Sušić. On 14 June 2019, Sušić married his long-time girlfriend Glenis Jankov.
