Vermin made his National League A debut in Switzerland with SC Bern during the 2009–10 season. On 17 September 2013, Vermin was signed to a three-year, entry-level contract with the Tampa Bay Lightning. Vermin in his first season of professional hockey was loaned to SC Bern for the season. In 55 games that season Vermin recorded 22 points in 55 games. In his career with Bern, he played in 230 games, registering 41 goals and 64 assists. At the finish the season, Vermin was joined the Syracuse Crunch for the remainder of the AHL season.
Professional
On 18 November 2015, the Tampa Bay Lightning recalled Vermin from the Syracuse Crunch. Vermin has skated in 12 games with the Crunch this season, posting three goals and ten points. At the time he was ranked for first in both assists and points. In his career, he has appeared in 93 career AHL games, all with the Syracuse Crunch during the pastthree seasons. During that time he recorded 16 goals and 44 points. Last season Vermin posted career bests in games played, goals, assists and points. On 19 November 2015, Vermin made his NHL debut in a 2-1 Lightning win over the visitingNew York Rangers. On 21 November 2015, Vermin recorded his first NHL point in a 5-0 Lightning win over the Anaheim Ducks. Vermin assisted on a Nikita Kucherov goal in his second NHL game. On 21 May 2016, the Lightning re-signed Vermin to a one-year, two-way contract. Vermin skated in six games with the Lightning during the 2015-16 regular season, recording one assist and a plus-1 rating. Vermin has also played in 118 career AHL games over three seasons, all with Syracuse, recording 22 goals and 55 points. On 20 June 2017, Lausanne HC announced that it had signed Vermin to a five-year contract, which contains an NHL out clause for a one-way deal. The deal was previously reported in January.
Personal
His father is from the Netherlands while his mother is from Hungary. Though Vermin had the option to play hockey internationally for Switzerland, Hungary or the Netherlands, he chose Switzerland because he was born in the country and developed there.
