System Administrator

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.

• 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

• Monday-Friday, standard 8-hour shifts
• Availability for occasional nights/weekends for after-hours support, upgrades, or project work
• Salary: $60,000 - $85,000 annually, Flexible Schedule Medical/Dental/Vision Life Insurance Paid Time Off Paid Vacation Time Paid Holidays Paid Bereavement Paid Training 401k with company match Annual Retention Bonus Professional Development Grant Program Employee Assistance Program Ongoing Contests & Prizes Annual Company Events Company Referral Program ADP Lifemart Employee Discounts

Work Environment

• This is a fully on-premise role located at: 3300 Rider Trail South, Suite 500, Earth City, MO 63045

• You’ll be working in a secure, team-oriented, and fast-paced environment that values reliability, accountability, and innovation.

Build Your Future with an Award-Winning Team at Credit Control!

What if you could grow your career with a company that’s been recognized seven consecutive years (2019-2026) as a Best Place to Work in Collections?

At Credit Control, our success starts with our people. We believe driven, dedicated team members are the foundation of everything we achieve-and we’re committed to rewarding that dedication with competitive pay, outstanding benefits, and meaningful growth opportunities.