System Admin L2 with Security Clearance

Catapult Staffing

Saint Louis, MO

JOB DETAILS
SKILLS
Application Servers, Asset Management, Audiovisual, Auditing, Communication Skills, Computer Maintenance, Computer Systems, Computer Workstations, Customer Relations, Customer Support/Service, Data Recovery, Dell Hardware, Desktop PC, Desktop Virtualization, DoD Clearance, Editing, Hardware Architecture, Help Desk, Hewlett-Packard Hardware, Identify Issues, Interpersonal Skills, Laptop PC, Layer 2 Protocols, Linux Operating System, Microsoft Active Directory, Microsoft Exchange Server, Microsoft Windows Operating System, Microsoft Windows System Administration, Network Administration/Management, Network Support, Network System Hardware, Network Topology, Operational Support, People Management, Problem Solving Skills, Process Development, Process Improvement, Public Key Infrastructure (PKI), Red Hat Linux Operating System, Remote Access, SQL (Structured Query Language), Sales Closing Skills, Security Clearance, Sensitive Compartmented Information (SCI), Server Support, Software Administration, Software Installation, Software Patches, Software Upgrades, System Center Configuration Manager (SCCM), Systems Administration/Management, Technical Writing, Unix Operating Systems, VMWare, VPN (Virtual Private Network), Vendor/Supplier Relations, Virtual Machine (VM), Vulnerability Scanners, Windows Server Update Services (WSUS), Writing Skills
LOCATION
Saint Louis, MO
POSTED
2 days ago
System Administrator II (L2) Duration: 12 months (expected) Location: On-site 5 days/week (St. Louis, MO) Overview The System Administrator II supports Closed Area operations by providing advanced workstation, server, and network support within a secure environment. This role requires hands-on technical expertise, strong problem-solving ability, and strict adherence to security and operational standards. The L2 technician is responsible for provisioning systems, supporting end users, and ensuring stable, secure computing environments. Key Responsibilities • Maintain hardware infrastructure within secured network lab environments
• Deploy and provision virtual desktops and servers using VMware
• Install, configure, and support complex applications with multi-component integrations
• Peer review installation and configuration documentation for completeness and accuracy
• Troubleshoot complex application, OS, and integration issues
• Create and maintain Active Directory and Remote Access/VPN user accounts
• Deploy, maintain, and troubleshoot secure Group Policy solutions
• Interface with customers, vendors, and SMEs to resolve technical issues
• Perform system backups and restores
• Participate in process development and improvement efforts
• Maintain update services for software applications and infrastructure
• Recommend hardware architectures and software tools as needed
• Support and maintain multiple license server implementations
• Support and provide guidance on PKI infrastructure
• Deliver end-user support in Closed Areas, including desktops, laptops, and workstations
• Perform IMACD activities (install, move, add, change, dispose)
• Support dedicated network infrastructure from an operational and maintenance perspective
• Install OS updates, software releases, upgrades, and patches using WSUS and SCCM
• Provide follow-up on outstanding issues and escalations Minimum Qualifications • Active DoD SCI clearance required prior to start
• CompTIA Security+ CE required prior to start
• Minimum 3+ years of relevant experience integrating, configuring, and troubleshooting a broad range of technologies
• Experience supporting both Windows and Linux environments Operating Systems:
• Windows 10/11
• RHEL 8/9 Familiarity With:
• Server-based technologies
• Unix/Linux and Windows operating systems
• High-performance computing environments
• Development, production, and application servers
• Desktop systems (Windows/Linux)
• Basic network topology concepts Technical Requirements:
• Ability to install and maintain Windows 10/11 and RHEL 8/9
• Ability to install software releases, upgrades, patches, and resolve hardware/software issues
• Experience with Active Directory administration
• Experience with VMware provisioning (VM creation, resource assignment, templates)
• Experience with WSUS and SCCM for patch management
• Experience with both HP and Dell hardware Additional:
• Strong communication and interpersonal skills
• Self-sufficient and able to work in dynamic environments Preferred Qualifications • Experience managing assets through network-based tools (AV, backup/recovery, vulnerability scanning, GPO, auditing)
• Experience with server roles (SQL, Web, Exchange)
• Experience writing or editing technical documentation
• Basic scripting or automation exposure (PowerShell, Bash, Python)

About the Company

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Catapult Staffing