Julien Boisselier's acting career began in theater, before transitioning to television series. His first television series was "Group Night". He gained recognition in 1996 with a role in the French saga "In a Large Wind Flowers" on France 2.
Following this, he appeared in several dramas, including "Summer Beetles", "The Second Truth", "The Night of Murder", and "The One Who Left". In 2000, he landed his first role in the series "N7". He then appeared in "Clara et moi", "J'me ne sens pas belle", "We're Going to Love", "It's a Pleasure for Me", and "Please Do Not You Worry Goest".
In 2006, he played Charles Gaessler, a young mentally disabled man, in the TV movie "Flowers for Algernon", a role that showcased his emotional range. In 2010, he played Henry IV in a comedy, "In the Happiness of Men".
In 2011, he appeared in the series "Death at Edelweiss" alongside Claire Keim and continued with the series "Cheers Colo" on TF1 alongside Virginia Hocq and Titoff. He also appeared in the film "White Night" alongside Tomer Sisley and Joey Starr.
In 2012, he appeared in the film "The Chef" alongside Michael Youn and Jean Reno, as well as in the TV movie "Brothers and Sisters" on France 2 alongside Pascale Arbillot and Thierry Frémont.
Throughout his career, Julien Boisselier has demonstrated his versatility by taking on a wide range of roles, from comedy to drama, and has expressed his love for the diversity of roles he has played.