The research reframed Fuel Link from a single app into three connected experiences, each solving a distinct problem for a distinct user, but unified by one operational backbone. Fuel Station Dashboard: Built around a sales overview, attendant management, station setup, and pricing setup, the dashboard used high-contrast design and screen-reader compatibility to remain accessible across diverse users. To manage complexity, I divided the dashboard into clearly labeled sections with interactive elements that kept navigation intuitive despite the depth of data. Attendant App: Designed around barcode scanning, payment handling, and shift management, the app prioritized a minimalistic interface for attendants juggling multiple tasks at once. A key breakthrough came from integrating a clock-in/clock-out feature directly into the app, which significantly reduced manual tracking errors. User App: Built around a station locator, wallet integration, and loyalty features, the app let customers filter nearby stations by pricing, ratings, and services. Looking ahead, we scoped future additions like car maintenance scheduling and towing services to keep engagement growing over time. Design Process: Low-fidelity wireframes were used to validate structure and flow across all three components before any visual design began, with stakeholder feedback guiding iterative improvements. In high-fidelity design, the dashboard's Sales Overview used interactive graphs and data tables, while the User App's onboarding, authentication, and payment wallet flows were built for seamless, low-friction navigation. Usability testing with 10 participants then led to simplified dashboard navigation, an improved layout for the attendant app's clock-in feature, and enhanced search filters in the user app.