Key Responsibilities:Server & Virtualization InfrastructureAdminister and maintain Windows Server environments: Active Directory, DNS, DHCP, GPO, file/print services, and certificate servicesManage VMware vSphere virtualization platform including host maintenance, VM lifecycle, snapshots, and capacity planningMaintain on-premises and hybrid infrastructure supporting Microsoft 365 / Entra ID (Hybrid Join, Entra Cloud Sync, SSCP)Cloud & Identity AdministrationServe as platform-level owner for Microsoft 365 and Entra ID: tenant administration, conditional access, MFA policies, licensing, and group managementAdminister Exchange Online, Teams, and SharePoint at the platform/governance levelOwn MDM platform administration (Microsoft Intune): compliance policies, configuration profiles, app deployment, and enrollment workflowsNetwork & Security InfrastructureMaintain and administer network infrastructure including Cisco firewall rules, VLANs, VPN, and inter-site connectivityLead endpoint security operations: antivirus policy management, patching, and vulnerability remediationAdminister email security platforms (e.g., Avanan/Check Point) and support security audits and access reviewsOwn backup infrastructure and disaster recovery procedures including verification and documentationSQL Server & Data InfrastructureAdminister SQL Server instances across the environment: maintenance plans, backup/restore, SQL Agent jobs, availability, and patchingCoordinate with application and reporting teams on database performance, linked server configurations, and instance migrationsSupport SSRS infrastructure and reporting services availabilityMentorship & EscalationServe as Tier 3 escalation for issues beyond the IT Systems Specialist's scopeProvide guidance and knowledge transfer to help desk and junior IT staffMaintain infrastructure documentationRequired Education:Bachelor's degree in information technology, Computer Science, Information Systems, or a related field required. Control Devices (or "CDI"), an HBM Holdings company headquartered in Greater St. Louis, is a leading designer and manufacturer of engineered flow control solutions in the compressed gas, compressed air, oil & gas, and liquid controls markets.