Matt was the National Theatre of Scotland's first Head of Sound, from 2008 to 2017.

National Theatre of Scotland work includes: The Enemy, 68 Months in Waiting, Sore Afraid, The 306: Dusk (with Perth Theatre/14-18 NOW), How to Act (& Tour), Last Tango in Partick, Last Dream (On Earth), A Christmas Carol.

Other work includes: Heroine (Kennedy Centre, Washington); Missing People (Leeds Playhouse/Kani Public Arts Centre); Story Futures (Nexus); Last Orders at the Dockside, The Country Girls, What Put the Blood (Abbey Theatre);A Christmas Carol (Pitlochry); KES, Gaslight (Perth Theatre); Sound Symphony (Independent Arts Project); The Three Musketeers (The Dukes, Lancaster); Long Day’s Journey Into Night (Citizens/HOME Manchester); The Hidden (Visible Fictions); Cockpit (Royal Lyceum Theatre); Shrapnel (Theatre Gu Leòr).