Chun Chieh Chang

Master's

Computer Science

University of Illinois at Urbana-Champaign

Software engineer

Attendance System for UIUC under Prof. Abdussalam Alawini, serving over 5,000+ students across 30+ courses. • Decomposed existing backend into an MVC architecture, streamlining routing with distinct routers, controllers, and services, improving modularity, unit testing, and maintainability. • Ported the backend from JavaScript to TypeScript, ensuring type safety and improving code quality by implementing interfaces and models. • Enhanced test coverage to 95% by using Jest for unit tests, integration tests and Cypress for end-to-end (E2E) testing.