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# System Administrator

- **Company:** Credit Control LLC
- **Location:** Earth City, MO, United States
- **Experience:** Expert
- **Salary:** $60,000.0 - $85,000.0
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Bash Shell, Software Documentation, Dynamic Host Configuration Protocol, Linux, Domain Name System (DNS), Hyper-V, Information Technology Operations, Linux System Administration, Windows Servers, Networking Basics, Windows PowerShell, Red Hat Enterprise Linux, Azure Active Directory, Zero Trust Network Access, Server Administration, Server Virtualization, Software Deployment, TCP/IP, Virtual Local Area Networks, Virtualization Technology, Software Vulnerability Management, Scripting, Enterprise Software Applications, Cyberark, Comptia Server+, Firewalls (Computer Science), Information Technology, SentinelOne Expertise, Cisco, Vmware
- **Published:** June 29, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=5b313da00bdf18a2

## About the Role

Do you have experience in VLAN?, Do you have a Bachelor's degree?, * 5+ years of experience in system administration roles in enterprise environments.

 * Bachelor's degree in Computer Science or related field,
OR relevant certifications in lieu of a degree.

Preferred Certifications (One or more):

 * CompTIA Server+, Network+
 * Microsoft Certified: Windows Server Hybrid Administrator Associate
 * Cisco CCNA
 * VMware Certified Professional (VCP)
 * Red Hat Certified System Administrator (RHCSA)

Technical Skills

Required:

 * Windows Server & Linux administration
 * Virtualization (VMware, Hyper-V)
 * Networking fundamentals (VLANs, TCP/IP, Firewalls)
 * Backup and disaster recovery systems
 * Scripting (PowerShell, Bash)

Preferred/Bonus Experience With:

 * Appgate SDP (or similar ZTNA solutions)
 * Microsoft 365 administration
 * Azure AD Sync / Hybrid identity
 * ConnectWise Service Manager or other RMM platforms
 * Endpoint protection (SentinelOne)
 * Vulnerability management (Rapid7)
 * Cisco Umbrella
 * PAM tools like CyberArk or similar

## Description

We are seeking a highly skilled and motivated System Administrator to join our IT Operations team at our Earth City, MO headquarters. This is a 100% on-premise position, ideal for a hands-on professional with strong system administration experience, particularly in on-site infrastructure and enterprise systems.

You'll play a key role in managing our internal systems, supporting users, and contributing to infrastructure and security initiatives. The right candidate will be comfortable in a dynamic environment with varied responsibilities-from server management to application support., * Maintain, monitor, and optimize physical and virtual server infrastructure (Windows/Linux).

 * Administer Active Directory, DNS, DHCP, Group Policy, and related core services.
 * Support and improve virtualization environments (VMware, Hyper-V).
 * Perform routine patching, backups, and system health monitoring.
 * Provide Tier 2/3 support for service desk escalations.
 * Create and maintain system documentation and SOPs.
 * Assist with endpoint management and software deployment.
 * Coordinate with security teams on vulnerability remediation and incident response.
 * Participate in after-hours upgrades, maintenance windows, and on-call rotations.


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