Wimalajaya is a public accountant with extensive experience working at the international accounting firm KPMG and has served as a tax consultant for several companies, including PT. Indocement Tunggal Prakarsa, Tbk. (Indocement Group), PT. Sumber Alfaria Trijaya, Tbk. (Alfamart Group), and several other major companies. Wimalajaya has experience as a tax consultant, handling individual and corporate income tax calculations, preparing monthly financial reports, and developing corporate accounting systems.