In addition, he has also won an SCL Award, alongside Hildur Guðnadóttir, for Outstanding Original Score for Interactive Media for EA Games’ Battlefield 2042, an Icelandic Music Award as Producer of the Year, and a MASA Award for Best Sound Design in Television Program. In 2020, he scored Guerrillas, a feature film about freedom fighters in Myanmar directed by Arran Anyrin Bowyn, as well as The River Between Us, a documentary feature on uncontacted Peruvian tribes. He also composed the score for I Am Not A Monster, a BBC / PBS podcast telling the story of an American mother who brought her son to live in war-torn Syria. The podcast won several awards and was noted for its complex and weighty sound world.

Slater began producing records in his teens and studied experimental composition at Leeds University before moving to Germany in 2013 to begin his professional career. He got his start working as Johann Johannsson's principal musical sound designer and creative engineer, collaborating on several projects. He frequently collaborates with Academy Award- winning composer Hildur Gudnadottir, and in 2019 he engineered a live touring performance of the Chernobyl score for a bespoke, immersive sound system inside an abandoned telephone factory in Krakow, Poland. The show will continue to tour worldwide in 2022. He has also released a solo record on Iceland's acclaimed Bedroom Community – with a follow-up to be released later this year – and produced, recorded, and mixed a multitude of records, including work from composers Colin Stetson, Ben Frost, Valgeir Sigurðsson, Yair Glotman, and Mica Levi.