Senior On-Prem System Administrator – Enterprise IT

Credit Control, LLC.; Earth City (MO); On-site; USD 60,000 - 85,000; Full time

Benefits offered by this job

Medical/Dental/Vision

401k with company match

Paid Time Off

Paid Holidays

Annual Retention Bonus

Professional Development Grant Program

Job summary

Credit Control, LLC. seeks a seasoned System Administrator for our Earth City, MO headquarters. This 100% on‑premise role focuses on hands‑on server, AD, and security initiatives within an enterprise IT landscape.

You will manage Windows/Linux servers, virtualization, patching, backups, and on‑call support while contributing to documentation and project work in a fast‑paced environment.

Qualifications

• 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.

Responsibilities

• Maintain, monitor, and optimize physical and virtual server infrastructure (Windows/Linux).
• Administer Active Directory, DNS, DHCP, Group Policy, and related 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.

Skills

Windows Server

Linux administration

Virtualization

Networking fundamentals

Backup & disaster recovery

Scripting

Education

Bachelor’s degree in Computer Science or related field

Certifications in lieu of degree

Tools

VMware

Hyper‑V

Job description

Credit Control, LLC. seeks a seasoned System Administrator for our Earth City, MO headquarters. This 100% on‑premise role focuses on hands‑on server, AD, and security initiatives within an enterprise IT landscape.

You will manage Windows/Linux servers, virtualization, patching, backups, and on‑call support while contributing to documentation and project work in a fast‑paced environment.