System Administrator

San Diego, CA
Contracted
Experienced
PURPOSE
The System Administrator is responsible for supporting, maintaining, and improving core infrastructure, including servers, virtualization platforms, storage, identity services, and endpoint systems. This role ensures the stability, availability, and security of enterprise systems through routine administration, proactive monitoring, documentation, and adherence to IT standards.
The System Administrator works closely with senior engineers and the cybersecurity team to maintain daily operations, resolve Tier-2 issues, and support key infrastructure initiatives.
ESSENTIAL FUNCTIONS
Infrastructure & Systems Support
• Administer and maintain Windows Server and Linux systems; perform routine patching, updates, and system configuration.
• Support VMware ESXi, vCenter, and virtual server operations including provisioning, snapshots, and performance checks.
• Assist with Veeam Backup & Replication job monitoring, restores, and backup validation tasks.
• Maintain Active Directory, Group Policy, DNS, DHCP, and identity-related configuration changes.
• Perform hardware installation, racking, cabling, and lifecycle maintenance for servers and storage.
Network & Security
• Support firewall, VPN, and network appliance operations (Cisco / Fortinet / Palo Alto) under senior engineer guidance.
• Ensure systems meet security hardening standards and participate in patch compliance activities.
• Assist with troubleshooting endpoint protection, email security (DMARC/SPF/DKIM), and vulnerability remediation.
Monitoring, Documentation & Operations
• Monitor system performance using tools such as SolarWinds, Grafana, or Dynatrace and escalate anomalies.
• Document configurations, SOPs, diagrams, and asset changes in ServiceNow and Confluence.
• Perform Tier-2 troubleshooting for server, application, and endpoint issues; escalate when needed.
• Participate in disaster recovery tests and support backup verification activities.
Collaboration & Service Delivery
• Work closely with senior administrators on infrastructure modernization, patch campaigns, server migrations, and cloud projects.
• Provide high-quality service to internal customers and support cross-functional IT initiatives.
• Participate in on-call rotation and after-hours maintenance windows.
QUALIFICATIONS
Education
• Associate or Bachelor’s degree in IT, Computer Science, or related discipline (or equivalent experience).
Experience
• 3–5 years of experience in system administration in a medium or enterprise environment.
• Experience with Windows Server, Linux, VMware, and Active Directory.
• Familiarity with security frameworks, patch management, and system hardening.
Certifications (Preferred)
• Microsoft Certified: Windows Server / Azure
• VMware VCTA/VCP
• CompTIA Network+, Security+, or Linux+
• Veeam Certified Technician (VMCT)
CORE COMPETENCIES
• Strong analytical and troubleshooting skills.
• Solid understanding of enterprise server, storage, and networking fundamentals.
• Ability to follow change control, documentation standards, and operational procedures.
• Strong customer service mindset and teamwork orientation.
• Ability to prioritize work and manage multiple tasks effectively.
WORK ENVIRONMENT
• On-site presence required 5 days a week.
• Participation in after-hours maintenance and on-call rotation.
• Occasional travel to HT facilities or data centers.
• Must be able to lift up to 40 lbs for hardware installation tasks.
TOOLS & TECHNOLOGIES SUMMARY
CategoryTools / Technologies
VirtualizationVMware vSphere, ESXi, vCenter
Server AdministrationWindows Server, Linux (RHEL/Ubuntu), Group Policy
Backup & RecoveryVeeam Backup & Replication
Networking & SecurityCisco, Fortinet, Palo Alto, VPN, SPF/DMARC
Storage SystemsSAN, NAS, RAID
AutomationPowerShell, Bash
MonitoringSolarWinds, Grafana, Dynatrace
Cloud & IdentityAzure AD, M365, Intune
CollaborationServiceNow, Teams, SharePoint
ProcessesITIL, Change Management

 
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