Linux System Administrator

Omniscius Consulting•Orlando, FL

5d•Onsite

About The Position

Our client is seeking an experienced Systems Administrator to support mission-critical Department of Defense (DoD) operations in Orlando, FL. This is an excellent opportunity to work in a secure, fast-paced environment supporting enterprise infrastructure, cybersecurity initiatives, and lab operations while collaborating with engineering and cyber leadership. If you thrive in Windows and Linux environments, enjoy solving complex infrastructure challenges, and have experience supporting DoD systems, we'd like to hear from you.

Requirements

Active Secret Security Clearance
3–5 years of Systems Administration experience
DoD 8570 IAT Level II Certification (Security+, CCNA Security, CySA+, etc.)
Bachelor's degree preferred (equivalent experience considered)
Must be local to the Orlando, FL area
Must be willing to work onsite full-time
Windows Server 2019 & 2022
Windows Workstation Administration
Linux Administration (RHEL 7 & RHEL 8)
Proxmox
VMware ESXi
VMware vSphere
DNS
MDT
PXE Imaging
Active Directory
User and Group Management
ACAS (Assured Compliance Assessment Solution)
DISA STIG implementation and remediation
System hardening
Patch management
Vulnerability remediation
Splunk or similar centralized logging platforms
Java
Adobe
Microsoft Edge
VBScript
Trellix / McAfee ePO
ENS Firewall
DLP
Policy Auditor
HBSS / AESS
ManageEngine Service Desk (Tier I-III)
System troubleshooting
Hardware diagnostics
Technical documentation
Change management support

Nice To Haves

OCSP Axway Server Administration
Enterprise logging and monitoring platforms
DoD laboratory environments
Secure enterprise infrastructure
Mission-critical government systems

Responsibilities

Administer, maintain, and troubleshoot Windows and Linux server environments supporting mission-critical systems.
Install, configure, and maintain operating systems, software, firmware, and enterprise applications.
Configure user accounts, permissions, group policies, and system access controls.
Monitor system performance, identify issues, and perform hardware and software troubleshooting.
Maintain server configurations in compliance with DISA STIGs and cybersecurity best practices.
Support vulnerability management activities using ACAS and other DoD security tools.
Perform system hardening, patch management, and configuration management.
Support VMware virtual infrastructure including ESXi and vSphere environments.
Provide Tier I, II, and III technical support through the enterprise help desk.
Assist with lab operations and provide technical support during scheduled testing events.
Collaborate with Cybersecurity and Engineering teams to implement secure, reliable infrastructure solutions.
Maintain centralized logging solutions such as Splunk (or similar technologies).
Support system documentation, change management, and operational procedures.