Mark Nan Tie has been an influential senior environmental practitioner over many years and is held in high esteem for his professional and ethical standards. Within EIANZ, he has performed the roles of CEO and CEnvP Registrar and, in Victoria, has acted as Vice President and Secretary, and is current Vice President. As CEO EIANZ, Mark helped build membership and established sustainable administration of the Institute. As CEnvP Registrar, Mark has helped build the credentials of many EIANZ members, their skills, and their respect and professional influence. Mark has contributed sound knowledge and experience to influence decision-making and ensure that EIANZ remains a resilient and outstanding institution.