After being sacked by the Western Force in 2008 for an off field indiscretion, Henjak signed for Toulon in the Top 14 in France where he played until 2012.

Henjak was educated at St Edmund's College in Canberra, the same school as Matt Giteau, George Gregan and Ricky Stuart.

Henjak was called up into the 27-man national squad as cover mid-year 2004 after Elton Flatley broke his arm.

[1] Henjak made his international debut in 2004, on 26 June against England[1] where he came off the bench onto the wing with 10 minutes remaining in the game after Clyde Rathbone was injured.

In 2008 he was involved in an altercation in which his teammate winger Haig Sare had his jaw broken, requiring surgery to insert a plate.