Engineered a production-ready POS system with a focus on real-time state synchronization, high-performance analytics, and observability.
Implemented Real-time Synchronization using a global WebSocket Hub to broadcast order updates and shift status across multiple cashier instances.
Optimized Analytics Dashboard performance by implementing Redis cache-aside logic for complex sales and product performance reports.
Enhanced system reliability with Observability upgrades, including log/slog structured logging and Sentry SDK for request-scoped error tracking and panic recovery.
Designed a secure RBAC system integrated into both Backend middleware and Frontend UI components (shadcn/ui), ensuring granular permission-based access.
Designed a Single-Port Deployment strategy where a high-performance Go binary serves both the REST API and the React SPA, simplifying infrastructure.
Developed an Automated Maintenance Pipeline featuring a daily cron-based database reset (Wipe & Re-seed) to ensure demo environment consistency.
Established a robust CI/CD workflow via GitHub Actions, including automated builds, Docker image versioning (v1.4.0+), and Tailscale-secured deployments.
Maintained unit tests for core business logic (Orders & Auth) using mockgen and pgxmock to ensure system stability during architectural migrations.
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- Full Stack Developer