The Senior Infrastructure & Systems Administrator serves as the senior technical owner for the company's infrastructure environment, including servers, virtualization, hyperconverged infrastructure, networking, endpoint management, backups, disaster recovery, and core technology operations. This role is responsible for maintaining secure, reliable, and scalable technology services across company locations while supporting business operations, compliance requirements, and operational continuity.

This position is a hands-on infrastructure and systems administration role that provides advanced technical support, manages infrastructure projects, coordinates vendors, supports cybersecurity and vulnerability remediation efforts, and maintains documented standards, runbooks, and recovery procedures. The role also serves as a senior escalation resource for complex infrastructure, network, security, and systems issues.

Responsibilities

Infrastructure Administration

• Administer and maintain physical and virtual server environments.
• Manage VMware ESXi, vSphere, and Dell VxRail infrastructure across all locations.
• Perform server installation, configuration, patching, upgrades, and lifecycle management.
• Administer Windows Server, Active Directory, Group Policy, DNS, DHCP, and related core services.
• Support SQL Server maintenance, availability, and operational health.
• Monitor infrastructure performance, capacity, utilization, and availability.
• Manage infrastructure modernization and hardware refresh initiatives.

Backup, Disaster Recovery & Business Continuity

• Administer and support Cohesity backup and recovery platforms.
• Monitor backup operations, resolve backup failures, and report backup health.
• Perform regular restore testing, recovery validation, and disaster recovery readiness activities.
• Maintain documented backup, restore, disaster recovery, and business continuity procedures.
• Identify backup, storage, virtualization, and infrastructure risks and recommend improvements.

Network & Connectivity Services

• Administer wired, wireless, LAN, WAN, and SD-WAN infrastructure across all sites.
• Manage Meraki switches, firewalls, wireless access points, VLANs, and network connectivity.
• Support VMware VeloCloud SD-WAN environments and site-to-site connectivity.
• Troubleshoot network performance, latency, routing, and connectivity issues.
• Coordinate network installations, data drops, cabling projects, telecommunications vendors, and service providers.
• Maintain network standards, diagrams, documentation, and best practices.

Cybersecurity & Compliance

• Serve as a primary technical owner for infrastructure and endpoint security controls.
• Monitor, prioritize, and remediate vulnerabilities, CVEs, and security findings.
• Administer and review