IT Systems Administrator

Position Title:

IT Systems Administrator Department:
Information Technology

Location:

Fenton, MO

Reports To:

IT Director Classification:
Salary
-Exempt

Position Summary:

Control Devices is seeking an experienced Systems Administrator to own and maintain the company's core IT infrastructure across multiple U.S. locations. Working alongside an IT Systems Specialist and senior IT Director, this role is responsible for the reliability, security, and performance of servers, virtualization, network, and cloud infrastructure. The ideal candidate is a self-directed infrastructure professional who can operate independently, mentor junior staff, and serve as the primary escalation point for platform-level issues.

• Administer and maintain Windows Server environments:
  Active Directory, DNS, DHCP, GPO, file/print services, and certificate services
• Manage VMware vSphere virtualization platform including host maintenance, VM lifecycle, snapshots, and capacity planning
• Maintain on-premises and hybrid infrastructure supporting Microsoft 365 / Entra  (Hybrid Join, Entra Cloud Sync, SSCP)

• Serve as platform-level owner for Microsoft 365 and Entra t administration, conditional access, MFA policies, licensing, and group management
• Administer Exchange Online, Teams, and SharePoint at the platform/governance level
• Own MDM platform administration (Microsoft Intune): compliance policies, configuration profiles, app deployment, and enrollment workflows

• Maintain and administer network infrastructure including Cisco firewall rules, VLANs, VPN, and inter-site connectivity
• Lead endpoint security operations: antivirus policy management, patching, and vulnerability remediation
• Administer email security platforms (e.g., Avanan/Check Point) and support security audits and access reviews
• Own backup infrastructure and disaster recovery procedures including verification and documentation

• Administer SQL Server instances across the environment: maintenance plans, backup/restore, SQL Agent jobs, availability, and patching
• Coordinate with application and reporting teams on database performance, linked server configurations, and instance migrations
• Support SSRS infrastructure and reporting services availability

• Serve as Tier 3 escalation for issues beyond the IT Systems Specialist's scope
• Provide guidance and knowledge transfer to help desk and junior IT staff
• Maintain infrastructure documentation

• Bachelor's degree in information technology, Computer Science, Information Systems, or a related field required.

• 5+ years of hands‑on systems administration in a Windows Server / Active Directory environment
• VMware vSphere or equivalent virtualization platform administration
• Microsoft 365 and Entra  administration (beyond end‑user support)
• Intune/MDM platform management experience
• SQL Server administration (backups, agent jobs, maintenance, patching)
• Network infrastructure fundamentals: firewall administration, VLANs, VPN, DNS/DHCP
• Scripting proficiency in Power Shell for automation and administration tasks
• Experience supporting manufacturing or industrial environments a plus

• Windows Server (2016/2019/2022):
  Active Directory, DNS, DHCP, Group Policy, DFS, certificate services, and server role administration
• VMware vSphere: ESXi host administration, vCenter, VM lifecycle management, snapshots, and resource optimization
• Microsoft 365 & Entra t-level administration, Entra Cloud Sync / AD Connect, conditional access policies, MFA/SSPR, hybrid identity, and license management
• Microsoft Intune:
  Compliance and configuration policies, app deployment, Autopilot enrollment, and device lifecycle management
• SQL Server (2016+):
  Instance administration, backup/restore, SQL Agent job management, maintenance plans, linked servers, and basic performance monitoring
• Network infrastructure:
  Firewall rule management (Cisco Meraki or equivalent), VLANs, inter-VLAN routing, site-to-site and remote access VPN, DNS/DHCP
• Email & endpoint security:
  Email security gateway administration…