Systems Administrator Job at Robert Half (Saint Louis)

Systems Administrator

Robert Half

Location:
United States , Saint Louis

Category:
IT - Administration

Contract Type:
Not provided

Salary:

Not provided

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Job Description:

We are looking for an experienced Systems Administrator to support and enhance enterprise infrastructure operations in Saint Louis, Missouri. This Contract-to-Hire position is ideal for a senior team member who can balance strategic oversight with direct technical execution across servers, virtualization, networking, and cloud-connected services. The role will contribute to infrastructure reliability, operational efficiency, and service continuity while partnering with team members on complex technical initiatives.

Job Responsibility:

Direct infrastructure initiatives from initial scoping and design through implementation and post-deployment support
Administer virtualized server environments and core enterprise platforms to ensure stability, performance, and availability
Support network operations by maintaining switching, routing, and firewall technologies across the environment
Oversee Microsoft 365 identity and access administration, including Entra ID and related directory services
Create and enhance automation workflows using scripting and orchestration tools such as PowerShell, Power Automate, or comparable platforms
Strengthen security operations by assisting with vulnerability assessment, remediation tracking, and related infrastructure hardening efforts
Contribute to disaster recovery readiness through planning, test execution, documentation updates, and follow-up remediation activities
Produce and maintain clear operational runbooks for incident response, outage handling, and recurring support procedures
Serve as an escalation resource for advanced technical issues while providing guidance and mentorship to less experienced administrators
Perform hands-on infrastructure tasks such as server installation, hardware troubleshooting, cabling, and deployment of data center or AV equipment when needed

Requirements:

At least 5 years of experience in systems administration, infrastructure support, or a closely related technical role
Demonstrated expertise managing VMware environments and supporting enterprise server infrastructure
Strong knowledge of network technologies, including routing, switching, and firewall administration
Experience supporting Microsoft 365 services, Active Directory, Windows Server, Windows 10, Intune, and Group Policy
Hands-on familiarity with tools and platforms such as Cisco Meraki, Dell iDRAC, Zscaler, Tenable, Dell Technologies, or similar enterprise solutions
Practical scripting or automation experience using PowerShell or comparable tools to streamline operational tasks
Ability to complete physical infrastructure work, including lifting equipment up to 50 pounds, climbing ladders, and racking or cabling hardware
Exposure to supporting end-user or infrastructure technologies in environments that may include Citrix-based solutions

What we offer:

medical, vision, dental, life and disability insurance
401(k) plan

Additional Information:

Job Posted:
May 05, 2026

Employment Type:

Fulltime

Work Type:

On-site work

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