Yonnique completed her BCom (Law) at Stellenbosch University before joining a listed financial services organisation and thereafter a non-profit company in Johannesburg, where she fulfilled various roles, including corporate and risk governance, in the 8 years she spent working there.
During this time, Yonnique completed her law degree through the University of South Africa, followed by a Master of Arts in Applied Ethics at the University of the Witwatersrand. Yonnique has also completed her board exams at the Chartered Secretaries Southern Africa and is a registered Ethics Officer at The Ethics Institute.