Christien is currently Associate Producer on upcoming Sky Original limited series Amadeus, written by Joe Barton and directed by Julian Farino and Alice Seabright.

He recently produced short comedy Idiomatic, written, directed and starring Emmy nominated actor Phil Dunster, Exec’d by Brett Goldstein and Matthew James Wilkinson, and was Assistant Producer on S2 of Alan Carr’s ITVX comedy Changing Ends.

In 2022, he worked as Shadow Producer on The Lazarus Project S2, and produced BFI Network short drama Swole.

Christien started his filmmaking journey making a range of award-winning narrative shorts, along with running script development labs for the BFI.