System Administrator - Linux / VMware (DoD Systems)

Na Ali'i Consulting & Sales, LLC. • Charleston, SC

1d • Onsite

About The Position

Nakupuna Companies is seeking an experienced System Administrator to manage, secure, and optimize our critical Red Hat Enterprise Linux (RHEL) and VMware environments running on Dell enterprise hardware. You will sustain high-availability Department of Defense (DoD) networked servers. You will lead cyber hardening initiatives and leverage Hyper-Converged Infrastructure (HCI) to ensure modernization and strict compliance with federal defense frameworks.

Requirements

• 5+ years of system administration experience supporting DoD enterprise networks.
• Hands-on experience lifecycle-managing Dell PowerEdge servers and utilizing Dell OpenManage or iDRAC tools.
• Advanced knowledge of RHEL deployment, troubleshooting, storage management (LVM), and performance tuning.
• Proven experience managing VMware ESXi clusters, vCenter, vMotion, and high-availability configurations.
• Direct experience with RMF, DISA STIG implementation, and SCAP Compliance Checker (SCC).
• Active CompTIA Security+ CE, CCNA Security, CySA+, or CISSP.
• Red Hat Certified System Administrator (RHCSA/RHCE), VMware Certified Professional (VCP), or Dell Technologies certifications.
• Bachelor’s degree in Computer Science, Cyber Security, or Information Technology.
• DoD 8570.01-M / 8140 compliance (e.g., CompTIA Security+, CISSP) required.
• Must be a U.S. citizen.

Nice To Haves

• Experience deploying and scaling Dell VxRail or VMware vSAN Hyper-Converged solutions.
• Experience with automation platforms like Red Hat Ansible Tower or Horizon.
• Familiarity with DoD containerized environments (Kubernetes, Red Hat OpenShift).
• Experience managing centralized logging architectures (Splunk, ELK stack).

Responsibilities

• Maintain, upgrade, and troubleshoot RHEL 7/8/9 servers and VMware vSphere/vCenter environments.
• Manage Dell PowerEdge enterprise servers, including hardware provisioning, firmware updates, and iDRAC configuration.
• Support and optimize Hyper-Converged Infrastructure solutions to streamline compute, storage, and networking.
• Apply DISA STIGs (Security Technical Implementation Guides) and SRGs to Linux OS, virtual infrastructure, and Dell hardware.
• Analyze ACAS (Assured Compliance Assessment Solution) / Nessus scans to patch and remediate findings.
• Configure RHEL and VMware networking within secure DoD frameworks, managing VLANs, vSwitches, and firewalls.
• Manage Identity and Access Management (IdAM) utilizing Active Directory, LDAP, and PKI/CAC authentication.
• Develop Bash, Python, or Ansible scripts to automate configuration management, patching, and STIG compliance checks.
• Author and maintain Risk Management Framework (RMF) artifacts, system architectures, and standard operating procedures (SOPs).

What This Job Offers

• Job Type: Full-time
• Career Level: Senior