TONY NGO

Orange County, CA | Authorized to work in the United States | 949-910-5933

Senior Systems Administrator and IT Infrastructure Professional with 15+ years of experience supporting enterprise Microsoft environments, data centers, and business-critical IT operations. Extensive background in Windows Server administration, Active Directory, Microsoft Azure, AWS, virtualization, SQL Server, SCCM patch management, infrastructure monitoring, and security operations. Experienced in supporting physical, virtual, cloud, and hybrid environments, troubleshooting complex system issues, and maintaining infrastructure availability, performance, and security. Familiar with SOX-regulated environments, change management, incident response, backup and recovery, and ITIL operational practices. Recognized for proactive problem-solving, cross-functional collaboration, and maintaining reliable enterprise infrastructure.

CORE TECHNICAL SKILLS

Windows & Microsoft Infrastructure: Windows Server 2012–2022, Active Directory, Microsoft Entra ID (Azure AD), DNS, IIS, Microsoft Exchange.
Virtualization & Cloud: VMware, Microsoft Hyper-V, Azure Virtual Machines, Azure IaaS, AWS, hybrid infrastructure
Systems Administration: Server deployment, configuration, maintenance, resource monitoring, troubleshooting, performance
Patch & Configuration Management: SCCM, Windows Server patching, vulnerability remediation, change management
Security & Monitoring: Splunk, CrowdStrike, Symantec, security monitoring, system health analysis, compliance support
Database & Applications: Microsoft SQL Server, database administration background, enterprise, web application support
Backup & Disaster Recovery: Backup -restore operations, recovery, server maintenance, business continuity practices
Networking: DNS, VPN, Ethernet switching, wireless networking, network troubleshooting
Compliance: SOX-regulated environments, security controls, operational standards, audit and compliance support

PROFESSIONAL EXPERIENCE

INDEPENDENT CONSULTANT | Healthcare Sector

2024–Present

Provide systems administration and infrastructure support in a healthcare environment, emphasizing system availability, reliability, security, and operational continuity.
Support Microsoft server infrastructure and enterprise applications, including routine maintenance, monitoring, access administration, troubleshooting, and recovery activities.
Investigate infrastructure and application issues, identify potential service disruptions, and support timely incident resolution.change management, documentation, and security-conscious systems administration.
Continue professional development in cloud technologies, including Microsoft Azure fundamentals, AWS, and emerging AI applications relevant to IT operations.

WESTERN DIGITAL | Senior Systems Administrator

October 2014–February 2024

Administered monthly Windows Server patching through SCCM to support security compliance, system stability, and operational continuity.
Managed Microsoft Active Directory accounts and access permissions to support enterprise applications and infrastructure.
Configured, maintained, and monitored physical and virtual server environments, evaluating CPU, memory, storage, availability, and overall system health.
Supported cloud-based infrastructure across Microsoft Azure and AWS, including server configuration, maintenance, and operational troubleshooting.
Monitored infrastructure and security events using Splunk, Symantec, and CrowdStrike tools to support system health, security visibility, and compliance requirements.
Evaluated virtual machine configurations and monitored infrastructure against operational policies, performance expectations, and availability requirements.
Troubleshot server, operating and infrastructure issues, coordinating with technical teams to minimize service disruptions.
Contributed to infrastructure improvements focused on performance, operational, cost management, and compliance.
Supported enterprise IT operations through disciplined change management, technical documentation, maintenance procedures, and cross-functional collaboration.

CORELOGIC CORP | Senior Systems Engineer

July 2007–October 2014

Administered Microsoft Active Directory services, including Domain Controllers, user accounts, core directory infrastructure.
Configured and deployed server farms and supported Microsoft Cluster environments to help maintain application availability and infrastructure stability.
Supported large-scale data center migration activities across Dallas, Quincy, and Plano environments.
Implemented system configuration changes and automation to improve operational efficiency, reliability, and service stability.
Collaborated with technical teams on infrastructure changes, migration activities, system maintenance, troubleshooting.

EMULEX | Network Systems Administrator

July 2004–June 2007

Administered Microsoft Exchange and Active Directory services, including user account management and routine systems.
Configured and maintained DNS, VPN connectivity, Ethernet switches, and wireless networking infrastructure.
Performed server maintenance, backup-restore operations, and routine infrastructure support to maintain system availability.
Troubleshot network, server, and connectivity issues while following established operational procedures.

CERTIFICATIONS