Melvin Feycal Mastil is a goalkeeper born in Thonon-les-Bains, France, in 2000. He moved to Switzerland as a child and began senior football with Echichens, Azzurri 90 and Echallens before joining Lausanne-Sport. Mastil developed mainly through Lausanne's reserve side and loan spells, including Biel-Bienne and Stade Nyonnais in the Swiss leagues. Of Algerian descent through his family, he was called up by Algeria in March 2026 and made his senior debut in a friendly win over Guatemala.