System Administrator Linux VMware (DoD Systems)

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.

The following reflects managements definition of essential functions for this job but does not restrict the tasks that may be assigned. Management may assign additional duties and responsibilities to this job at any time due to reasonable accommodation or other reasons.

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

Required Qualifications:

• Experience: 5 years of system administration experience supporting DoD enterprise networks.
• Hardware Expertise: Hands-on experience lifecycle-managing Dell PowerEdge servers and utilizing Dell OpenManage or iDRAC tools.
• Linux Expertise: Advanced knowledge of RHEL deployment troubleshooting storage management (LVM) and performance tuning.
• Virtualization Expertise: Proven experience managing VMware ESXi clusters vCenter vMotion and high-availability configurations.
• DoD Compliance: Direct experience with RMF DISA STIG implementation and SCAP Compliance Checker (SCC).
• Security Certification: Active CompTIA Security CE CCNA Security CySA or CISSP.
• OS/Hardware Certification: Red Hat Certified System Administrator (RHCSA/RHCE) VMware Certified Professional (VCP) or Dell Technologies certifications.

Preferred Skills:

• 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).

Education:

• Bachelors degree in Computer Science Cyber Security or Information Technology.

Certifications:

• DoD 8570.01-M / 8140 compliance (e.g. CompTIA Security CISSP) required.

Clearance: This position requires a Secret Clearance. Must be a U.S. citizen.

Physical Requirements: The ideal candidate must at a minimum be able to meet the following physical requirements of the job with or without a reasonable accommodation:

• Ability to perform repetitive motions with the hands wrists and fingers.
• Ability to engage in and follow audible communications in emergencies.
• Ability to sit for prolonged periods at a desk and work on a computer.