Corris is a formally qualified FSC and ISO auditor, having worked for more than 20 years in the auditing field as the Global Chain-of Custody Manager for forest certification standards for SGS.  During this time, he was intricately involved in the development of forest certification standards with multinational teams from across the world.

As the Global Manager he visited over 45 countries to audit forest products companies, agents, and SGS affiliate offices to ensure that the integrity of the certification systems are maintained. He conducted training courses to expand the auditor capacity within the ranks of SGS and to ensure that back-office staff maintained a credible certification system. After leaving SGS, he joined CMO in February 2020 to head up the CMO Namibia operations with his offices located in Otjiwarongo, Namibia.