Mdu was appointed Executive Vice President (EVP): Business Development on 1 October 2025, bringing over 21 years of experience in Mining and Investment. Before joining Sibanye-Stillwater, he served as Head of Listed Equities at the Public Investment Corporation (PIC), joining the PIC in 2016 as Portfolio Manager (Resources).

After earning his degree in Mining Engineering, Mdu launched his career at Anglo American Platinum, where he held various positions within the Anglo American Group. His roles included Strategy Manager at Anglo American Platinum and Mineral Economist at Anglo American Technical. In addition, he spent over five years as an analyst at Rand Merchant Bank, working in both the Asset Management and Investment Banking Divisions.