JeanStéphane Sauvaire born 31 December 1968 Paris is a French director producer and screenwriter He is best known as the director of films Johnny Mad Dog 2008 A Prayer Before Dawn 2017 and Black Flies 2023 Sauvaire was born on 31 December 1968 in Paris France He currently lives in New York City In 1991 he started film career as a first assistant director of the film Les Nuits Fauves by Cyril Collard Then he joined the crew for the films Les Demons de Jesus and Les Grandes Bouches directed by Bernie Bonvoisin I Stand Alone by Gaspar Noé Sous Les Pieds Des Femmes directed by Rachida Krim Hors Jeu by Karim Dridi Louise Take 2 by Siegfried and Love Me by Laetitia Masson He continued to work as the assistant director until 2000 At the end of 2000 he directed his three short films La Mule codirected with Rossy De Palma A Dios and Matalo In all these three short films he used the theme of violence among adolescents In 2008 he made the film Johnny Mad Dog coproduced with Mathieu Kassovitz The film was later presented in the Official Selection Un Certain Regard section at the Cannes Film Festival and won the Prix de lEspoir The film was an adaptation of the novel Johnny Chien Méchant written by Congolese writer Emmanuel Dongala It tells the story of a group of child soldiers fighting for the Liberians United for Reconciliation and Democracy LURD rebels in 2003 during the latter part of the Second Liberian Civil War After the success of the film he directed a telefilm Punk in 2012 which was coproduced by Arte with Paul Bartel and Béatrice Dalle In 2017 he made the film A Prayer Before Dawn which was adapted from the story of Billy Moore The film received an official selection at the 70th Cannes Film Festival in 2017 In 2023 Sauvaire directed Black Flies an adaptation of the eponymous novel by Shannon Burke with Sean Penn and Tye Sheridan The film is selected in competition at the 76th Cannes Film Festival in 2023