Letwin is the Managing Director of ZB Life Assurance Company. An intelligent, hardworking business leader who has worked in the insurance industry for eighteen years, twelve years of which were at executive level. She sits on the Boards of a life insurance company. Letwin has contributed immensely to the strategy formulation and implementation thereof of the companies mentioned above. She attended an Executive Development Programme in August 2015 at the University of Capetown, which assisted in broadening her scope in various areas including strategy formulation and implementation, marketing, human resources, conflict resolution, communication skills and negotiation skills among others. During her current job she has gained a deeper understanding of the life insurance industry as she participated in the development of products, review of processes and procedures and her close interaction with actuaries. She was involved in the selection of the administration system and led the delegation that went on site visits as part of the selection process. Letwin participates in the implementation of the system at a high level.