Over a two-month period, contributed to the Procure-Hub-Org/procure-hub-be and procure-hub-fe repositories by building core procurement features and foundational backend systems. Developed end-to-end seller bid proposal workflows and established the backend architecture for an auction system, including schema design and database migrations using SQL and Sequelize. Delivered an Auction History API with role-based access and implemented a comprehensive data model for procurement contracts, disputes, and financial operations, supporting compliance and audit requirements. Leveraged JavaScript, Node.js, and Express.js to design robust APIs and manage state across frontend and backend, focusing on scalable, transparent procurement and financial workflows.