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Network Services Subject Matter Expert

Job in Falls Church, Fairfax County, Virginia, 22042, USA
Listing for: General Dynamics Information Technology
Full Time position
Listed on 2026-01-18
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
Job Description & How to Apply Below

We are GDIT. The people supporting and securing some of the most complex government, defense, and intelligence projects across the country. At GDIT, we ensure today is safe and tomorrow is smarter. Our work has meaning, making an impact on both the world around us and ourselves. This is your place to embrace autonomy, seize opportunity, and deliver your best every day.

GDIT has an opening for a Network Services Subject Matter Expert in support of the Army National Guard (ARNG) located in Falls Church, VA. Join us on a pivotal IT Service Management (ITSM) contract that drives the modernization, expansion, and evolution of the ARNG’s global IT services. The program’s focus includes IT infrastructure, WAN, authentication, directory services, cybersecurity, application hosting, and more, leveraging the ITIL framework to deliver excellence in IT services to the ARNG.

How

a Senior Network Services Subject Matter Expert Will Make an Impact:
  • Strategize and Innovate:
    Support the network services team in developing complex solutions to meet ARNG strategic projects and initiatives.
  • Implement Advanced Network Solutions:
    Configure, manage, and maintain physical and virtual infrastructures, including Cisco routers, Layer 3 switches, Firewalls, Palo Alto IDS/IPS.
  • Ensure Operational Excellence:
    Perform required maintenance during off-hours. Provide support for 24x7 operations of a large enterprise infrastructure. Adhere to established schedules and best practices.
  • Maintain Compliance:
    Implement and maintain DISA STIG baselines in accordance with quarterly releases. Support CORA inspections required to maintain Authority to Operate (ATO).
  • Develop and Document SOPs:
    Create and maintain standard operating procedures.
  • Analyze customer requirements and provide technical solutions for complex problems.
  • Conduct maintenance and upgrades for network devices, including servers, routers, switches, firewalls, and remote access systems.
  • Create and defend system change requests.
  • Develop, maintain, and implement a proactive capacity planning model to enhance business decision-making.
  • Maintain network integrity and connectivity by ensuring compliance with organizational policies.
  • Coordinate acquisition of hardware, software, and subcontractor services as needed.
  • Plan and configure systems for data communication networks to meet ARNG needs.
  • Design and build hardware and software components for complex computer or telecommunications networks.
  • Evaluate emerging communications technologies to enhance network capabilities.
  • Maintain current knowledge of relevant and emerging technologies to ensure consistent technical performance.
  • Proactive, solution-oriented mindset, Familiarity with ITIL processes, Proven ability to communicate effectively with cross-functional teams, Strong problem-solving and analytical skills with attention to detail.
WHAT YOU’LL NEED TO SUCCEED:
Education

Bachelor’s degree in IT preferred. High School Diploma; AA/AS/BA/BS preferred or a related technical discipline, or the equivalent combination of education, technical certifications or training, or work experience (10+ years of relevant experience as an Information Technology professional).

Experience

10+ years of experience with Cisco and Palo Alto Routing, Switching, IDS/IPS, and Firewall technologies.

Required Technical Skills

Strong understanding of Routing protocols: BGP, OSPF, MPLS (Multiprotocol Label Switching), Multi-VRF appliances, Firewall and IDS/IPS configurations and concepts.

Certifications

Must meet DoD IAT Level II IA Computing Environment (CE) certification at state date: (i.e. Cisco, Palo Alto, etc.). Require Cisco Certified Network Associate (CCNA) or higher. Desired Cisco Certified Network Professional (CCNP).

Security Clearance Level

Active SECRET security clearance required and must be maintained.

Location

Falls Church, VA. Three (3) days of onsite with up to two (2) days telework. Onboarding/transition in period requires on-site support up to 60 days. Work schedules are subject to change on direction by mission requirements from GDIT or USG leadership.

GDIT IS YOUR PLACE

At GDIT, the mission is our purpose, and our people are at the center of everything we do.

  • Growth: AI-powered career tool that identifies career steps and learning opportunities
  • Support:
    An internal mobility team focused on helping you achieve your career goals
  • Rewards:
    Comprehensive benefits and wellness packages, 401K with company match, competitive pay and paid time off
  • Community:
    Award-winning culture of innovation and a military-friendly workplace
OWN YOUR OPPORTUNITY

Explore a career in program management at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your passion for the mission and delivering results.

#GECOS #GDITPriority

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