Having begun his career with the Bruins, Heinen, now 28 years old, made his mark by contributing 34 goals and 69 assists across 220 games with the team. Standing at 6 feet 1 inch and weighing 188 pounds, the forward achieved a career-best 47 points during his rookie season in 2017-18.
After his tenure with Boston, Heinen spent a portion of the 2019-20 season and the entire 2020-21 campaign with the Anaheim Ducks. He then joined the Pittsburgh Penguins for the past two seasons. With a collective experience of 413 NHL games, Heinen has achieved a notable record of 70 goals and 106 assists, totaling 176 points.
A native of Langley, British Columbia, Heinen was initially chosen by Boston as the 116th overall pick in the fourth round of the 2014 NHL Entry Draft.