Dionne is Legal Counsel for Ninety One SA (Pty) Ltd. In this role she works on a broad range of legal and governance matters in asset management and retirement funds industries.

She is the Former Deputy Information Officer: Momentum Retail Retirement Funds and current member of the Pension Lawyers Association.

Dionne holds a Postgraduate Diploma in Financial Planning from University of the Free State and BSc Molecular and Cellular Biology; LLB from Stellenbosch University.