Ms Shiff is an Independent Board Member of GAVI, Chairman of AROSE (Australian Remote Operations in Space and Earth), Chairman of the Australian Telecommunications Alliance, and Chairman of the Care Economy Cooperative Research Centre. She also chairs the International Advisory Board of the Australian Research Centre of Excellence on Automated Decision Making and Society. Previous board roles include Chairman of the global board of BAI Communications, board member of Infrastructure Australia, Deputy Chairman of the Government's Export Credit Agency EFIC, as well as board roles in a number of venture capital-backed ICT companies. Deena has served as a Group Managing Director at Telstra, where she led the Wholesale Division Group, established and led Telstra Business, and founded Telstra Ventures. She has also held regulatory and legal positions and has been a Partner of the law firm Mallesons Stephen Jaques. She is the Chair of the People and Culture Committee.