Following her academic education, Annoesjka worked in 1992 as epidemiologist at the Public Health Department of the Hague, the Netherlands and later in global and local roles in the pharmaceutical industry. Over a period of 15+ years, Annoesjka was employed at the Public Health Department of the Hague, the Headquarters of Organon (AKZO Nobel) and the local F. Hoffmann La Roche Roche affiliate in the Netherlands.

Over the last 15+ years, Annoesjka built her expertise in Strategic Product Development, Health Outcomes Research and Pricing & Reimbursement.

Since the conception of her Consultancy in 2005, Annoesjka has been successful in the reimbursement procedures of a substantial number of targeted therapies in the Netherlands.