Systems Network Administrator

Systems and Network Administrator

Please read the following job description thoroughly to ensure you are the right fit for this role before applying.

$110,000–$140,000 | Newport News, VA | Interim Secret Clearance Required

Secure and sustain the backbone of national defense—administer, optimize, and protect RHEL and Windows systems in mission-critical classified environments.

A Day in the Life – What You’ll Do

Manage, configure, and troubleshoot both Red Hat Enterprise Linux (RHEL) and Windows Server environments

Maintain Active Directory, DNS, DHCP, and Group Policy infrastructure

Monitor and administer network devices, firewalls, and security controls

Support deployment and optimization of virtual environments using VMware, Hyper-V, or KVM

Manage storage systems, including XFS NAS in virtualized environments (e.g., TrueNAS)

Apply patches, monitor logs, and enforce cybersecurity policies using firewalld, SELinux, Windows Firewall, etc.

Implement and manage VPNs, user access controls, and endpoint protection

Troubleshoot network and system-level issues in hybrid Linux / Windows environments

Automate tasks and deployments using Bash, PowerShell, Ansible, and basic Terraform scripting

Mentor junior admins and collaborate across cybersecurity, IA, and DevOps teams

Maintain and document system configurations, procedures, and compliance checkpoints

Required Qualifications

Bachelor’s degree in Computer Science, Information Technology, or related field (or equivalent hands-on experience)

8–10 years of relevant systems and network administration experience

Active Interim Secret clearance

CompTIA Network+, Microsoft Certified : Windows Server Fundamentals, or RHCSA (Red Hat Certified System Administrator)

Experience with :

RHEL 8 / 9 and command-line tools (Bash, YUM / DNF)

Windows Server 2022, Active Directory, IIS, DNS, DHCP, and Group Policy

Virtualization (VMware, Hyper-V, KVM)

Network configurations (IP addressing, VLANs, firewalls, VPNs)

XFS NAS administration in virtualized environments

Troubleshooting in hybrid Linux / Windows networks

Automation tools (Bash, PowerShell, Python, Ansible, Terraform)

Documentation and team collaboration in classified environments

Preferred Qualifications

Red Hat Certified Engineer (RHCE)

CompTIA Security+ or similar cybersecurity certifications

Advanced AD administration (Forest, Trusts, GPOs)

Experience with containerization (Docker, Kubernetes)

Experience deploying and managing Kubernetes clusters

Advanced scripting with PowerShell, Ansible, or Terraform

Experience with :

Layer 3 networking, NAT, VPN, ACLs, PKI, TLS

Network security monitoring tools (Elastic Stack, Wireshark, IDS / IPS)

Disaster recovery planning and tools (Veeam, snapshots, replication)

Security Information and Event Management (SIEM)

Endpoint security and patch management

Familiarity with SCCM, MDT, or similar imaging / configuration management tools

Who is Caribou Thunder?

Caribou Thunder is a premier Woman-Owned Small Business (WOSB) defense contractor supporting mission-critical programs across the Department of Defense and Intelligence Community. With a presence in over a dozen states and OCONUS, we specialize in systems engineering, cybersecurity, software development, and satellite communications.

Why Caribou Thunder?

Mission Impact – Administer and secure classified systems that directly support defense operations

Tech Depth – Work with complex enterprise systems in high-clearance environments

Growth Potential – Advance into cloud architecture, cybersecurity, or infrastructure leadership

Cleared Culture – Join a team that thrives in secure, agile, and technically rigorous programs

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