Sr. System Administrator

Role overview

Compute and cloud

• Design, build, and operate VMware vSphere and Microsoft Hyper-V platforms, including host configuration, clustering, cluster networking, and live migration.
• Administer vCenter and SCVMM for VM provisioning, templates, and fabric management.
• Build and operate AWS compute using EC2, AMIs, and instance sizing within the AWS landing zone.
• Manage HP Synergy frames and compute modules, firmware, and boot-from-SAN configuration; plan capacity and track utilization, cost, and growth.
• Lead migrations across platforms, including on-premises to AWS, and retire legacy infrastructure.

Storage and identity

• Own NetApp ONTAP aggregates, SVMs, volumes, LUNs, and SMB/NFS shares; manage iSCSI connectivity and storage networking for hypervisor hosts.
• Configure snapshots, SnapMirror/SnapVault replication, and storage efficiency; own backup schedules, retention, and restore testing.
• Manage ONTAP capacity, performance, and upgrades.
• Own Active Directory domain controllers, DNS, DHCP, sites and services, Group Policy, and domain/forest health.
• Own Entra ID hybrid synchronization, conditional access, MFA, app registrations, and enterprise SSO; maintain ADFS and SAML/OIDC integrations.
• Enforce least privilege and lead domain consolidation and identity migration work.

Network, operations, and leadership

• Provide backup network coverage and support firewall, switching, wireless, VPN, and Citrix NetScaler operations under the network lead.
• Troubleshoot connectivity across systems and network layers, including VLANs, routing, DNS, and certificates; support AWS and Azure hybrid networking.
• Provide tier-3 infrastructure escalation and participate in the on-call rotation.
• Plan and execute patching, upgrades, and maintenance; remediate vulnerabilities with cybersecurity partners.
• Automate administration with PowerShell and orchestration tools; maintain documentation, diagrams, runbooks, configuration records, and change records.
• Manage vendor relationships and platform selection input; mentor and train junior systems administrators and helpdesk staff.

Qualifications

• The supplied source text ends immediately after “What You’ll Bring — Required Qualifications”; candidate qualifications are not included.