Rogam Chozas
@rogamchozas
Infrastructure architect specializing in VMware, SDDC, and secure data-center modernization.
SingaporeWhat I'm looking for
I am an Infrastructure Architect with over two decades of experience designing and modernizing enterprise VMware environments, SDDC architectures, and NSX/NSX-T deployments across multiple industries. I focus on resilient, scalable virtual infrastructures with strong automation, performance, and security engineering.
At AT&T Singapore I led multi-region VMware transformation programs, authored NSX architecture blueprints and operational runbooks, and built PoC labs integrating NSX, Palo Alto, and cloud security stacks to validate global rollouts. I also directed a global Palo Alto SD-WAN migration and ran cross-functional architecture workshops and vendor evaluations.
Previously I rebuilt APAC VMware infrastructures for Daimler, executed major vCenter and ESXi upgrades using PowerCLI automation at the National University of Singapore, and provided L3 UNIX and virtualization support at Hewlett-Packard. I hold VMware NSX and Data Center Virtualization certifications and multiple security and SD-WAN credentials, and I continue professional development in cybersecurity and AI.
Experience
Work history, roles, and key accomplishments
ATDesigned, deployed, and maintained enterprise NSX/NSX-T virtualization and distributed firewalling across multi-tenant SDDC, authored global NSX blueprints and runbooks, and led hybrid-cloud architecture decisions to optimize VMware stack lifecycle. Directed global Palo Alto SD-WAN migration for 30+ international sites, improving network resiliency by
40%
System Engineer
Daimler Southeast Asia
Dec 2017 - Feb 2019 (1 year 2 months)
Re-designed APAC VMware infrastructure to improve HA and DR, led multi-region VMware upgrades (vCenter/ESX→ESXi) and vSS→vDS migrations with PVLANs, and standardized deployment procedures and golden images across Singapore, China, Dubai, and Australia.
NSSystem Engineer
National University of Singapore
Oct 2015 - Dec 2017 (2 years 2 months)
Delivered campus-wide VMware architecture, executed vCenter and multi-phase ESXi upgrades using PowerCLI automation to reduce migration timelines by 60%, and led NSX integration PoC for Big Data platforms.
Senior Specialist
Amesys
Dec 2013 - Jun 2015 (1 year 6 months)
Managed Linux environments supporting virtualized applications, improved deployment reliability through automation and monitoring, and strengthened ITSM processes, patching, and platform security.
HEDeployed vCenter and ESX across Singapore and Australia, configured HP c7000 blade enclosures with Virtual Connect and SAN zoning to support VMware workloads, and delivered mission-critical support including Serviceguard and Veritas clusters.
JCMaintained high availability for enterprise applications across AIX, WebSphere, IIS, and virtualized platforms and executed disaster recovery drills validating VMware-backed continuity for banking applications.
System Administrator/Engineer
Various Companies
Jan 2001 - Dec 2009 (8 years 11 months)
Provided UNIX/Linux/Windows support for enterprise and SME clients, migrated environments to Windows Server, and managed antivirus, backup, and proxy systems across multiple engagements.
Education
Degrees, certifications, and relevant coursework
NSNational University of Singapore
Certificate, Cybersecurity
Ongoing Certificate in Cybersecurity with integrated AI topics.
Batangas State University
Bachelor Of Science, Computer Engineering
1995 - 2001
Grade:
Activities and societies:
Availability
Location
SingaporeAuthorized to work in
PhilippinesJob categories
Skills
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