Gus joined the RN in 2005 and the Submarine Service in 2007. He has served as a warfare officer on Trafalgar and Astute class SSNs and Vanguard class SSBNs and performed roles in operations support and operational training. He joined DNO in 2023 on the SSNA team and is responsible for the platform high level requirements as well as supporting doctrine and concepts for future SSNs.