System Development
• Contributed to development of an all-in-one POS system, consolidating diverse functionalities into a unified platform
• Designed and engineered APIs for in-house tools to streamline order processing, employee management, and daily operations
• Redeveloped the front-end UI for reservation systems using modern frameworks, ensuring a seamless user booking experience
• Built a real-time calendar-based scheduling system with WebSocket, enabling efficient order management and team collaboration
• Implemented a rule engine–based campaign and coupon system to support configurable and scalable promotional workflows
Performance Optimization
• Improved high-demand endpoint response times by over 60% through code refactoring and database query optimization
• Resolved concurrency issues in the queue system, ensuring reliable, scalable operation under heavy traffic loads
• Optimized backend processes for reservation systems, reducing CPU usage on Azure-hosted MySQL
• Migrated critical workflows to efficient libraries, achieving faster and more reliable performance
Automation & Scalability
• Developed and automated key operational processes, including scheduled batching, customer notifications, and dynamic schedule generation, utilizing cron services and Azure Logic Apps
Payment Integration & Optimization
• Maintained and optimized integrations with third-party payment gateways, ensuring secure and seamless transaction processing
Deployment & Monitoring
• Managed CI/CD pipelines with GitHub Actions for deployment across local, staging, and production environments, ensuring consistent software delivery
• Monitored system performance using SEQ, proactively addressing potential issues to maintain system stability
System Support & Collaboration
• Conducted bug fixes across backend and frontend systems, ensuring efficient resolution of system issues
• Collaborated within cross-functional Agile teams to design and implement solutions aligned with evolving business needs