Abhishek Verma developed two major API features for the hotwax/oms repository, focusing on order fulfillment and product data accessibility. He built the Order Item Ship Group Management API, enabling creation, updating, and retrieval of ship groups for orders, which enhanced control within the order management system. Additionally, he expanded the Product Variants API to support fetching product details and all associated variants, improving catalog data access. Working primarily in Java, Abhishek emphasized robust API design and RESTful practices, updating endpoint paths for maintainability. His work demonstrated depth in backend and API development, addressing core operational needs without bug fixes.