Internal Procurement Request System (IPRS)

An internal enterprise web application engineered to digitize and enforce a structured, two-level approval workflow for procurement operations. The system completely automates the lifecycle of purchase requests—moving seamlessly from employee submission to departmental manager review, and finally to finance officer verification for Purchase Order (PO) issuance. Built as a deep-dive portfolio piece into cutting-edge enterprise architecture, the application features strict four-tier Role-Based Access Control (RBAC) enforced via React Router v7 layout route guards and ASP.NET Core authorization policies. It implements robust, zero-trust backend logic where total prices are strictly computed server-side to prevent payload tampering, alongside conditional risk validations for high-value requests (over 50,000 SAR). The project pairs an advanced session security layer (JWT with custom expired token rotation) with a highly responsive, event-driven user interface synchronized via SignalR and Zustand.