Junior It Systems Administrator Jobs (NOW HIRING)

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.

Key Responsibilities:

Server & Virtualization Infrastructure

• 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 ID (Hybrid Join, Entra Cloud Sync, SSCP)

Cloud & Identity Administration

• Serve as platform-level owner for Microsoft 365 and Entra ID: tenant 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

Network & Security Infrastructure

• 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

SQL Server & Data Infrastructure

• 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

Mentorship & Escalation

• 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

Required Education:

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

Experience

• 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 ID platform 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 PowerShell for automation and administration tasks
• Experience supporting manufacturing or industrial environments a plus

Technical Skills

• 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 ID: Tenant-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 (Avanan/Check Point or equivalent), antivirus/EDR policy management, MFA enforcement
• PowerShell: Scripting for administration automation, bulk user/group management, reporting, and task scheduling
• Backup & DR: Enterprise backup platform administration, recovery testing, and documented runbook maintenance
• Exchange Online: Advanced mail flow, connectors, hybrid configuration, and transport rules
• IIS / Windows web services: Site administration, SSL certificate management, application pool configuration
• SSRS / SQL Server Reporting Services: Service administration and report deployment (report development handled by others)
• SharePoint Online: Site administration and governance (not end-user content management)

Soft Skills & Other Requirements

• Strong analytical and problem-solving skills with attention to detail.
• Excellent verbal and written communication skills; ability to explain technical concepts to non-technical users.
• Ability to manage multiple priorities and work effectively both independently and as part of a team.
• Commitment to continuous learning and staying current with evolving technologies.
• CompTIA A+, Network+, Security+, or Microsoft certifications preferred but not required.

Work Environment:

This position is primarily office-based within a manufacturing/industrial environment. Occasional lifting of equipment (up to 50 lbs.) may be required. This role may involve working outside of standard business hours to support system maintenance, upgrades, or critical issue resolution. This position will also require periodic travel (estimated 5-10%) to our multiple locations across the United States to provide on-site IT support and ensure consistent service delivery company wide.

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. The company offers custom valves and flow control solutions for companies who place a premium on quality. Control Devices leverages operational excellence and flow control expertise to deliver trustworthy flow control products and innovative solutions that protect life and our planet.

CDI offers competitive compensation, a comprehensive benefits package, paid time-off, personal protective equipment reimbursement for safety shoes and prescription safety glasses, casual dress work environment, and a solid 401(k) retirement plan to promote financial security.

Control Devices, LLC is an Equal Opportunity Employer. We provide equal employment opportunities to all employees and applicants and prohibit discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.