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About me

Tech Job:

2005 – 2010: Java Developer/ IT Network
2010 – 2011: Network Engineer/ IT Consultant
2011 – 2013: Network Engineer/ IT Infratructure Specialist
2013 – 2015: Network Engineer / IT Consultant
2015 – Now: System Administrator
Design & Implementation of Large-Scale Systems:
– Elasticsearch Architecture: Designed and implemented Elasticsearch cluster for batdongsan.com.vn, oto.com.vn, chobrod.com, philkotse.com, cintamobil.com handling 10M+ searches/day.
– VMware Infrastructure: Deployed and managed VMware vCenter administering 500+ virtual machines across multiple sites
– Database Clustering: Designed and operated PostgreSQL/Patroni clusters, MariaDB clusters, MS-SQL clusters with high-availability architecture
– Container Orchestration: Deployed Kubernetes clusters, Docker containerization, GitLab CI/CD pipelines, ArgoCD for automated deployment
Management & Optimization:
– Monitoring & Analytics: Built centralized logging systems, monitoring dashboards for Data Center and network infrastructure
– Security Implementation: Deployed firewall clusters (pfSense, Kerio Control, Fortinet), security monitoring, and intrusion detection systems
– Technical Leadership: Led technical teams, established operational procedures, trained staff, supervised infrastructure deployment across 5 countries