Harmonia Holdings Group, LLC · 2 days ago
Systems Administrator
Lorton, VA
Full-time
Hybrid
Senior Level, Lead/Staff
10+ years expHarmonia Holdings Group is seeking a highly skilled Systems Administrator to support DHS ICE Homeland Security Investigations. This role provides advanced technical leadership and mission-critical support for secure law-enforcement systems, managing enterprise networks, servers, and security configurations.
ComputerRoboticsSoftware
No H1B
Security Clearance RequiredU.S. Citizen OnlyHiring Manager
Kenneth Rutherford
Responsibilities
Install, configure, administer, and maintain CALEA LAN/WAN infrastructure, servers, SANs, and network devices
Administer Active Directory (AD), including:
Promoting/demoting domain controllers
Troubleshooting DNS and DHCP issues
Managing GPO hierarchy and execution
Writing and maintaining PowerShell/Bash scripts for automation
Analyzing event logs and Windows system errors
Plan, deploy, and maintain COOP and DR capabilities in coordination with the Government and vendor partners, ensuring redundancy and failover readiness
Patch and update servers and workstations; ensure security baseline compliance with DHS and FISMA standards
Apply and troubleshoot security hardening requirements and vulnerability remediation; support the ATO process and collaborate with the ISSO to resolve findings
Administer virtualization and storage platforms, including:
VMware ESXi/vCenter – patching, updates, capacity planning, troubleshooting
Nutanix – cluster management and maintenance
NetApp – SAN/NAS configuration and data management
Assist with Palo Alto firewall deployment and rule migration (from Cisco ASA 5506) to support network segmentation and high availability
Configure and troubleshoot Cisco and Dell switches; support VPN tunnels and IP transition projects (copper to fiber)
Support lab environment setup and testing for patch validation and COOP simulation
Perform hardware replacement (hard drives, memory modules, power supplies, etc.)
Maintain technical documentation, diagrams, and SOPs in CALEA repositories
Liaise with Harmonia and ICE technical leads to coordinate troubleshooting and mission support
Qualification
Required
Bachelor's degree in IT, Engineering, or related field OR +5 years equivalent experience
10+ years enterprise IT systems/network administration experience
Proficiency in Active Directory, DNS, DHCP, and GPO management
Proficiency in PowerShell or Bash scripting for automation and administration
Proficiency in VMware, Nutanix, and NetApp administration
Proficiency in Windows Server and Linux system management
Proficiency in server/workstation patching and security remediation
Proficiency in security standards, ATO processes, and coordination with ISSO
Proficiency in Cisco/Dell network devices and Palo Alto firewalls
Excellent communication skills with both technical and non-technical stakeholders
Ability to work independently in high-pressure, mission-critical environments
Preferred
Experience supporting federal law enforcement IT systems or CALEA-related operations
Hands-on experience assisting with the design or deployment of COOP/DR sites
Knowledge of Palo Alto firewall configuration and migration
Familiarity with Kubernetes or containerized applications (e.g., JSI platforms)
Experience with static routing, VPN tunnels, and multi-site network resiliency
Familiarity with lab testing and replication validation processes
Prior experience supporting high-availability, 24/7 mission operations
Microsoft Certified Solutions Associate (MCSA)
Microsoft Certified Systems Engineer (MCSE + Security)
CompTIA Security+ (active certification preferred)
PMP (Project Management Professional)
Company
Harmonia Holdings Group, LLC
Harmonia Holdings Group is a computer software company that provides application development services.
201-500 employees
Funding
Current Stage
Growth StageTotal Funding
unknownKey Investors
Madison Dearborn Partners
2024-09-07Private Equity
Leadership Team
Damon Griggs
CEO and Chairman
Kirstin Shelton
Chief Human Resources Officer
Recent News
Washington Technology
2025-09-08
The Business Journals
2025-01-10
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