Senior Network Administrator

1 week ago

Alexandria, VA, United States Agil3 Technology Solutions LLC Full time

The Senior Network Engineer is a key technical expert responsible for designing, implementing, and maintaining the agency's enterprise network infrastructure. This role focuses on the stability, performance, and security of LAN, WAN, wireless, VoIP, and data center networks, with a strong emphasis on Cisco and Palo Alto technologies. The Senior Network Engineer leads complex troubleshooting, contributes to network architecture and secure configuration baselines, and mentors junior administrators, ensuring the network supports mission-critical operations.

Key Responsibilities

  • Install, configure, maintain, and troubleshoot Cisco routers, switches, wireless access points, and firewalls across enterprise environments.
  • Configure and manage Palo Alto firewalls, including security policies, VPNs, and threat prevention features.
  • Lead troubleshooting of complex Layer 2/3 routing and switching issues, including protocols such as BGP, OSPF, EIGRP, HSRP, MPLS, and QoS.
  • Support network services for VoIP, data center connectivity, and SDN technologies.
  • Develop, document, and maintain secure network baselines, operational runbooks, and network topology diagrams.
  • Perform capacity planning, performance monitoring, and network optimization.
  • Research and evaluate emerging networking technologies, providing recommendations for modernization and improvements.
  • Mentor junior administrators, provide knowledge transfer, and serve as a Tier 3 escalation point for network incidents.
  • Collaborate with cybersecurity teams, SOC, and CSIRT to maintain compliance with federal security standards (FISMA, NIST, DISA STIGs).
  • Support continuity of operations (COOP), disaster recovery (DR), and network failover testing.
  • Prepare and deliver reports, metrics, and status updates to the COR and agency leadership.
Minimum Qualifications
  • Bachelor's degree in Computer Science, Information Systems, Engineering, or related field.
  • At least 10 years of enterprise network administration/engineering experience, or CCIE certification with equivalent depth.
  • Expert knowledge of Cisco networking platforms (Catalyst, Nexus, ASA, ISR, Meraki).
  • Experience configuring and managing Palo Alto firewalls and Panorama.
  • Strong understanding of LAN/WAN, SDN, wireless networking, VoIP, and data center connectivity.
  • Proficiency in routing and switching protocols (BGP, OSPF, EIGRP, MPLS).
  • Demonstrated experience creating technical documentation, diagrams, and SOPs.
  • Excellent problem-solving, communication, and leadership skills.
Preferred Qualifications
  • Active industry certifications such as: CCNP/CCIE (Cisco), Palo Alto PCNSE, CompTIA Network+, VMware VCP-NV.
  • Prior experience supporting federal government IT networks.
  • Experience with Azure/AWS/GCP networking, hybrid cloud, and VPN connectivity.
  • Active security clearance (Public Trust minimum, Secret or higher preferred).

Other Requirements
  • Must pass background investigation.
  • Must be a U.S. Citizen.
  • Must be able to work on-site in the National Capital Region, with occasional travel.


Company Overview

Agil3 Technology Solutions LLC ("A3T") is a Northern Virginia based, ISO 9001:2018, ISO 20000 & ISO 27001 Certified, 8a, Women-Owned (WOSB) and Service-disabled Veteran-Owned (SDVOSB) small business. A recent recipient of the prestigious Washington Technology TOP 50 (ranking #9, and on the list for last 4 years), A3T is experiencing industry leading recognition and growth. In addition to the CEO's recognition as an "All-Star Entrepreneur", A3T is recognized by Inc Magazine as one of the fastest growing companies in the country, by Vet 50 as Fastest Growing Veteran-Owned Businesses, and is featured in CyberSecurity Ventures / Cybercrime Magazine "As a go-to Women-Owned Cybersecurity company in US and internationally". As part of our growth, we are looking for YOU to join our growing team.

A3T offers excellent benefits to enhance the work-life balance, including:
  • Medical Insurance
  • Dental Insurance
  • Vision Insurance
  • Life Insurance
  • Short Term & Long-Term Disability
  • 401k Retirement Savings Plan with Company Match
  • Paid Holidays
  • Paid Time Off (PTO)
  • Tuition and Professional Development Assistance
  • Parking/Travel Reimbursement (metropolitan areas)

  • Senior Network Administrator

    14 hours ago

    Alexandria, VA, United States NetImpact Strategies Full time

    Senior Network AdministratorJob Locations US-VA-AlexandriaJob ID 2025-3535Category Information TechnologyType Full TimeJob DescriptionNetImpact Strategies is seeking an experienced Senior Network Engineer to manage and maintain the agency's enterprise network infrastructure. You will oversee deployment, configuration, and support of Cisco routers,...

  • Network Administrator Senior

    2 weeks ago

    Alexandria, VA, United States GovCIO Full time

    Overview GovCIO is currently hiring a Senior Network Administrator to manage secure network operations in support of the U.S. Coast Guard. This hybrid role is based in Alexandria, VA and requires significant on-site presence to ensure mission-critical network availability, security compliance, and performance optimization. Responsibilities Administer and...

  • Network Administrator Senior

    1 week ago

    Alexandria, VA, United States GovCIO Full time

    Overview GovCIO is currently hiring a Senior Network Administrator to manage secure network operations in support of the U.S. Coast Guard. This hybrid role is based in Alexandria, VA and requires significant on-site presence to ensure mission-critical network availability, security compliance, and performance optimization. Responsibilities Administer and...

  • Network Administrator Senior

    1 week ago

    Alexandria, VA, United States Govcio LLC Full time

    Overview GovCIO is currently hiring a Senior Network Administrator to manage secure network operations in support of the U.S. Coast Guard. This hybrid role is based in Alexandria, VA and requires significant on-site presence to ensure mission-critical network availability, security compliance, and performance optimization. ResponsibilitiesAdminister and...

  • Network Administrator Senior

    1 week ago

    Alexandria, VA, United States Govcio LLC Full time

    Overview GovCIO is currently hiring a Senior Network Administrator to manage secure network operations in support of the U.S. Coast Guard. This hybrid role is based in Alexandria, VA and requires significant on-site presence to ensure mission-critical network availability, security compliance, and performance optimization. ResponsibilitiesAdminister and...

  • Senior Network Engineer

    2 weeks ago

    Alexandria, VA, United States Systems Planning and Analysis, Inc Full time

    OverviewSystems Planning and Analysis, Inc. (SPA) delivers high-impact, technical solutions to complex national security issues. With over 50 years of business expertise and consistent growth, we are known for continuous innovation for our government customers, in both the US and abroad. Our exceptionally talented team is highly collaborative in spirit and...

  • Senior Network Engineer

    1 week ago

    Alexandria, VA, United States Systems Planning and Analysis, Inc Full time

    OverviewSystems Planning and Analysis, Inc. (SPA) delivers high-impact, technical solutions to complex national security issues. With over 50 years of business expertise and consistent growth, we are known for continuous innovation for our government customers, in both the US and abroad. Our exceptionally talented team is highly collaborative in spirit and...

  • Network Administrator

    5 days ago

    Alexandria, VA, United States Red Cedar Consultancy, LLC Full time

    Job Title: Network Administrator Location: 1775 Duke St, Alexandria, VA 22314 (Hybrid)     Summary: As a Network Administrator, you will play a key role in providing support in network administration to the National Credit Union Administration program. This support may include assistance with LAN, WAN, wireless, VoIP, data center and software-defined...

  • Network Administrator

    7 days ago

    Alexandria, VA, United States Red Cedar Consultancy, LLC Full time

    Job Title: Network Administrator Location: 1775 Duke St, Alexandria, VA 22314 (Hybrid)     Summary: As a Network Administrator, you will play a key role in providing support in network administration to the National Credit Union Administration program. This support may include assistance with LAN, WAN, wireless, VoIP, data center and software-defined...

  • Network Administrator

    6 days ago

    Alexandria, VA, United States Red Cedar Consultancy, LLC Full time

    Job Title: Network Administrator Location: 1775 Duke St, Alexandria, VA 22314 (Hybrid)     Summary: As a Network Administrator, you will play a key role in providing support in network administration to the National Credit Union Administration program. This support may include assistance with LAN, WAN, wireless, VoIP, data center and software-defined...