SME Systems Administrator
Company: Harmonia Holdings Group
Location: Lorton
Posted on: April 1, 2026
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Job Description:
Harmonia Holdings Group, LLC is an award-winning, rapidly
growing federal government contractor committed to providing
innovative, high-performing solutions to our government clients and
focused on fostering a workplace that encourages growth,
initiative, creativity, and employee satisfaction. Title: SME
Systems Administrator Location: Lorton, VA (22079) Citizenship:
U.S. Citizen (required for access to DHS IT systems) Clearance:
Must be able to obtain and maintain DHS/ICE Fitness Determination
(Public Trust), including favorable preliminary Fitness and full
NBIS eAPP investigation (SF-85P, OF-306, SSA-89, fingerprints, PREA
questionnaire if required) Schedule: Full-time; 8-hour workdays
with on-call support as needed. Hybrid Work: Lorton, VA roles may
telework up to 2 days per week; 3 days onsite required (subject to
mission needs) Travel: Occasional CONUS travel; local travel within
50 miles is not reimbursable Role Overview Harmonia Holdings Group
is seeking a highly skilled Systems Administrator to support DHS
ICE Homeland Security Investigations (HSI) Title III and Linguists
Unit (T3LU) under the CALEA program. This role provides advanced
technical leadership and mission-critical support for secure
law-enforcement systems operating 24/7 across multiple locations.
The Systems Administrator will manage and troubleshoot enterprise
networks, servers, virtual environments, and security
configurations while collaborating on the design and maintenance of
the CALEA Continuity of Operations (COOP) site in Scottsdale, AZ. A
shared responsibility among Harmonia, the government, and vendor
partners. This position supports DHS’s mission while contributing
to Harmonia’s overarching goals: delivering premier technology
services, driving mission-focused innovation, sustaining
organizational excellence, and being an employer of choice for
skilled professionals. 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. Required Qualifications 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 •
PowerShell or Bash scripting for automation and administration •
VMware, Nutanix, and NetApp administration • Windows Server and
Linux system management • Server/workstation patching and security
remediation • Security standards, ATO processes, and coordination
with ISSO • 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
Qualifications 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. Preferred
Certifications: • Microsoft Certified Solutions Associate (MCSA) •
Microsoft Certified Systems Engineer (MCSE Security) • CompTIA
Security (active certification preferred) • PMP (Project Management
Professional) Soft Skills Analytical and detail-oriented with
strong initiative. Adaptability to changing mission needs and
operational tempo. Collaborative approach with vendors (JSI, Palo
Alto) and government teams. Commitment to Harmonia’s principles of
excellence, collaboration, curiosity, and integrity , and growth
within an employer of choice organization. Physical Demands / Work
Environment Must regularly lift/move up to 50 lbs.; occasionally up
to 80 lbs. with hand truck/lift cart. Requires standing, kneeling,
crouching, and crawling in server rooms. Normal hearing/vision
required; moderate server-room noise DICE CJ
___________________________________________________________________________________________________________
Here at Harmonia we are pleased to have been repeatedly recognized
for our outstanding work culture, the innovative work we do, and
the employees on our team who make a difference each day. Some of
these recognitions include: Recognized as a Top 20 "Best Place to
Work in Virginia" Recipient of Department of Labor's HireVets Gold
Medallion Great Place to Work Certification for five years running
A Virginia Chamber of Commerce Fantastic 50 company A Northern
Virginia Technology Council Tech 100 company Inc. 5000 list of
fastest growing companies for eleven years Two-time SBA SBIR
Tibbett's Award winner Virginia Values Veterans (V3) Certification
We recognize that every bit of our success is the result of our
teams of hard-working, motivated, and innovative professionals who
are proud to call themselves part of the Harmonia family! In
addition to competitive compensation, a family-focused culture, and
a dynamic, productive work environment, we offer all full-time
employees a variety of benefits including, but not limited to
Traditional and HSA- eligible medical insurance plans 100%
employer-paid dental and vision insurance options 100%
employer-sponsored STD, LTD, and life insurance 5% 401(k) company
matching Flexible-schedules and teleworking options Paid holidays
and PTO Accrual Plans Paid Parental Leave Professional development
and career growth opportunities Team and company-wide events,
recognition, and appreciation and so much more! Check out our
LinkedIn , Facebook , and Instagram to find out a little more about
who we are and if we are the right next step for your career!
Harmonia is an Equal Opportunity Employer providing equal
employment opportunity to all employees and applicants for
employment without regard to race, color, religion, national
origin, age, gender, gender identity, sexual orientation,
disability, or genetics. Harmonia does and will take affirmative
action to employ and advance in employment individuals with
disabilities and protected veterans. To perform the above job
successfully, an individual must possess the knowledge, skills, and
abilities listed; meet the education and work experience required;
and must be able to perform each essential duty and responsibility
satisfactorily. Other duties in addition to those listed may be
assigned as necessary to meet business needs. Reasonable
accommodation will be made to enable an applicant with a disability
to successfully apply for and/or perform the essential duties of
the job. If you are in need of an accommodation, please contact
HR@harmonia.com .
Keywords: Harmonia Holdings Group, Harrisonburg , SME Systems Administrator, IT / Software / Systems , Lorton, Virginia
