On April 11, 2014, at the completion of his collegiate career, Ferlin signed a two-year entry-level contract with the Boston Bruins.

[3] In the 2014–15 season, Ferlin made his professional debut with the Bruins AHL affiliate in Providence.

He scored his first NHL point, an assist, during the following game against the Chicago Blackhawks on February 22, 2015.

On July 1, 2017, Ferlin signed a one-year, two-way deal as a free agent with the Edmonton Oilers.

[4] After he was cleared to return, he played in just 7 games with AHL affiliate, the Bakersfield Condors, before he was removed from the roster, citing retirement.