Pham Tan Dat

I joined Long Van as a Backend Developer and was immediately placed on the domain team alongside the team lead. We were both tasked with building the entire .VN domain management system from scratch — covering registration, eKYC profile management, deployment, renewal, and the full customer lifecycle from order to active usage. This work was instrumental in helping Long Van achieve official registrar status with VNNIC, Vietnam's domain authority.

After the domain system went live successfully, I transitioned to the Cloud team. My focus: synchronizing the data center migration from v1 to v2, enabling full customer deployment on the new infrastructure. I also managed the complete VM lifecycle — provisioning, resource reservation, deployment automation, password management, and operational resets — dramatically reducing manual intervention and improving deployment consistency.

I returned to Team Service as its key — and sole — developer. I took full ownership of Long Van's service management platform, improving modules for resource management, plan upgrades/downgrades, renewal flows, and usage tracking. I also built and maintained the internal admin portal using JSF/PrimeFaces, while simultaneously delivering a comprehensive REST API layer for frontend (app & website) integration.

As the company expanded into outsourcing, I built TRUEDOC — a multi-tenant healthcare subscription platform supporting personal, family, and complex enterprise tiers (where each enterprise subscription distributes health consulting & lab testing sub-subscriptions by phone number). In parallel, I rebuilt the SPA treatment lifecycle system, migrating all legacy data and implementing the activation/usage flow with benefit-based session tracking. Finally, I unified the service representation model across all three domains — cloud, healthcare, and SPA — into a single coherent architecture, making state management explicit and eliminating the need for domain-specific silos.