I've built and maintained HRIS and PWA attendance systems at PT Cakra Guna Karya Nusa for approximately 950 employees across Indonesia, covering payroll, geofencing, reporting, approval workflows, and executive dashboards.
At Rschooltoday.com, acquired by Arbiter Sports, I led development for Transfer Management System and Class Registration platforms used by high school associations and 112+ schools in the United States. I consolidated 50+ client databases into a shared multi-tenant architecture, migrated storage to AWS S3, and delivered Laravel, Inertia.js, and PHP upgrades with zero downtime.
I also bring experience building a Xamarin loyalty app, teaching Java and MySQL labs, and independently deploying Laravel-based HRIS projects on VPS infrastructure.
