Jourdain has written for The New York Times, Vanity Fair, The Hollywood Reporter, Variety, Sight & Sound Magazine, GQ, Nylon, Indiewire, Vulture, Fangoria, Thrillist, Bitch Media, Hyperallergic, Reverse Shot, The Film Stage, The Los Angeles Review of Books, and Okayplayer, among many other publications.

Jourdain has served on juries for the following festivals: Melbourne International Film Festival, Fantasia Film Festival, Seattle International Film Festival, Milwaukee Film Festival, San Francisco Film Festival, Cleveland International Film Festival, Indie Memphis, Trinidad and Tobago Film Festival, Bushwick Film Festival, Longshots, Los Angeles Greek Film Festival, and Long Distance Film Fest. Jourdain worked as a features programmer for Outfest LA for two years and has guest programmed at the Tribeca Film Festival. She is also a member of GALECA (The Society of LGBTQ Entertainment Critics) and AAFCA (The African American Film Critics Association).

Locally, Jourdain has programmed film screenings at Nitehawk Cinema, Alamo Drafthouse, and the Roxy Theatre in New York City. She has given film introductions and moderated Q&As at theaters such as Lincoln Center, The Museum of Modern Art, The Museum of the Moving Image, Metrograph, IFC Center, Quad Cinema, DGA New York, Museum of the City of New York, and Angelika Film Center.