Hệ thống Viettel Operation System vOps

- Delivered and maintained core modules for an all-in-one Digital Workplace platform serving 5,000+ employees, integrating DDP Websocket real-time messaging, WebRTC/SFU-based media streaming for VoIP and video calls, and S3 Object Storage for file sharing - alongside HR self-services, calendar management, and AI chatbots in a single interface. - Engineered frontend mobile Mini-App ecosystem, integrated internal APIs to digitize daily administrative operations such as meal ordering, car booking, entry/exit registration, tax settlement, Tet holiday,... - Centralized enterprise workflows by seamlessly integrating with Viettel SSO, Viettel Vmail, SAP HRM, Viettel LLM AI, and Q&A/monitoring alert chatbots across Viettel subsidiaries. - Customized and deployed dedicated platform instances for Viettel Aerospace and Viettel’s overseas units in Mozambique and Myanmar, enabling federated real-time messaging and collaboration across independently managed domains. - Supported the deployment from standalone Docker infrastructure to Kubernetes, to optimize container delivery, ensuring continuous platform availability and near zero-downtime releases.