Schalk is a Senior Manager within the Financial Services Advisory (FSA) division of Deloitte South Africa where he consults and audits clients of the office of the CEO. He has 12 years of experience in credit risk modelling. His experience includes both Basel and IFRS 9 model development, refinement, validation, and implementation. Schalk has audited impairment models for compliance with the IFRS 9 standards. He has worked within the investment banking (incl. aircraft finance, commodity finance, parastatals, municipalities), corporate banking, business banking and retail banking space of a Tier 1 bank in South Africa; this included subsidiaries of the bank in the Southern African region. He has experience in low default portfolios & expert judgement models. He developed pricing models and helped with the implementation of a new core banking system.