Club career Gilljam is a youth product of
Broberg and played for their senior team until 2012, when he joined
Hammarby. In 2014, he was named "
Årets komet" ("Comet of the year") in Swedish bandy.
International career Gilljam was part of Swedish World Champions teams of
2017. He made a significant contribution when he scored the decisive goal in the 91st minute in the final against
Russia. ==Honours==