System Admin L2 Security Clearance

Position: System Admin L2 with Security Clearance
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 (Power Shell, Bash, Python)