Wendolyn worked on enhancing seller data management within the amzn/selling-partner-api-models repository, focusing on expanding the Sellers API and updating related Product and Inventory schemas. Using Java and leveraging her skills in API and backend development, she introduced new fields to support richer product listings and more accurate stock tracking for sellers. Wendolyn ensured that all schema adjustments maintained backward compatibility, allowing existing integrations to function without disruption. She also provided clear developer documentation to facilitate adoption of the changes. The work demonstrated a targeted, in-depth approach to improving data quality and operational efficiency for seller-facing platform features.