Matt Squire is an American record producer, audio engineer, mixing engineer, and songwriter. His production, songwriting, and mixing credits include Panic! at the Disco, Ariana Grande, Sabrina Carpenter, Demi Lovato, Selena Gomez, Kesha, One Direction, Huddy, 3OH!3, Charli XCX, Palaye Royale, Katy Perry, The Maine, Big Time Rush, Metallica, Bea Miller, The Warning, Alessia Cara, Hollywood Undead, Neck Deep, Krewella, Sum 41, Simple Plan, All Time Low, SeeYouSpaceCowboy, Good Charlotte, Underoath, Boys Like Girls, The Amity Affliction, The Used, HIM and Taking Back Sunday.