Su was appointed to the Board of AWN Rural Pty Ltd in November 2022. Su has held numerous high-profile senior executive and board directorship positions in the finance and agricultural sectors. Su is also a Director of Australian Unity, LiveCorp, Australasian Pork Research Institute, a Commissioner for International Agricultural Research and is the Special Representative for Australian Agriculture for the Australian Government. Su was named the 2013 Westpac and Australian Financial Review Regional Women of Influence and received the Women in Agribusiness Award in 2014 for outstanding contribution to policy development. Su is also a beef cattle producer in the Southern Tablelands of NSW.