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Senior Network Administrator
Agile DefenseAberdeen Proving Ground, MD, United Statesfull_timeVerifiedPosted 27 Feb 2026
About the role
At Agile Defense we know that action defines the outcome and new challenges require new solutions. That’s why we always look to the future and embrace change with an unmovable spirit and the courage to build for what comes next.
Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility—leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation’s vital interests.
Requisition #: 1455Job Title: Network Administrator III | ExemptJob Title for Careers Page: Network Administrator IIILocation: Aberdeen Proving Grounds, MDClearance Level: Active DoD – TS / Secret with ability to obtain TSRequired Certification(s): · CompTIA Security+ CE· Cisco CCNA within 6 months
SUMMARY
At the direction of Program Leadership, provide network administration and operational support for network infrastructure. Recommend solutions for new equipment, software, network configuration, design, and management to include detail, specification, hardware components, and part numbers. Provide technical support for the operations of a fiber optic and twisted pair-based network infrastructure
JOB DUTIES AND RESPONSIBILITIES
· Installation, Configuration, and Maintenance of the Network· Expansion, Modification, Integration and Redundancy of the Network· Diagnostics and Testing of Network using software/hardware tool suites· Firewall policy Management· Traffic Analysis: NetFlow, SNMPv3 traps, syslog, wireshark, etc.· Network problem Analysis, diagnosis and resolution· Assist with security Audits
QUALIFICATIONS Required Certifications
· CompTIA Security+CE· Cisco CCNA within 6 monthsEducation, Background, and Years of Experience· 7+ years’ experience in related field· Cisco ISE subject matter expert· Install, configure, and maintain L2 and L3 switches, routers, firewalls, and other network devices.· Knowledge of VLANS, layer 2 switching, LAN Management, and Ports, protocols & services· Fabricate, test, and install Ethernet cables· Fortigate, Juniper, Palo Alto, and/or Cisco Firewalls. Fortigate Firewall experience preferred.· Familiarity with DISA STIG· Network monitoring applications e.g. Solarwinds· Familiarity with RADIUS servers, and 802.1x· Familiarity with VoIP
ADDITIONAL SKILLS & QUALIFICATIONS Required Skills
· Strong self-starter attitude, team oriented and good communication skills are a must.· CISCO ISEPreferred Skills· Experience with DoD (Army) networks· HAIPE Inline Network Encryption (TACLANE) management Unix/Linux experience· PERL/Python Scripting
WORKING CONDITIONS Environmental Conditions
· Contractor site with 0%-10% travel possible. Possible off-hours work to support releases and outages. General office environment. Work is generally sedentary innature but may require standing and walking for up to 10% of the time. The working environment is generally favorable. Lighting and temperature are adequate, and there are no hazardous or unpleasant conditions caused by noise, dust, etc. Work is generally performed within an office environment, with standard office equipment available.Strength Demands· Sedentary – 10 lbs. Maximum lifting, occasional lift/carry of small articles. Some occasional walking or standing may be required. Jobs are sedentary if walking and standing are required only occasionally, and all other sedentary criteria are met.Physical Requirements· Stand or Sit; Walk; Repetitive Motion; Use Hands / Fingers to Handle or Feel; SeeEmployees of Agile Defense are our number one priority, and the importance we place on our culture here is fundamental. Our culture is alive and evolving, but it always stays true to its roots. Here, you are valued as a family member, and we believe that we can accomplish great things together. Agile Defense has been highly successful in the past few years due to our employees and the culture we create together.
What makes us Agile? We call it the 6Hs, the values that define our culture and guide everything we do. Together, these values infuse vibrancy, integrity, and a tireless work ethic into advancing the most important national security and critical civilian missions. It's how we show up every day. It's who we are.
We also believe in supporting our employees by offering a competitive and comprehensive benefits package. To explore the benefits we offer, please visit our website under the Careers section.
Happy - Be Infectious.Happiness multiplies and creates a positive and connected environment where motivation and satisfaction have an outsized effect on everything we do.
Helpful - Be Supportive.Being helpful is the foundation of teamwork, resulting in a supportive
Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility—leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation’s vital interests.
Requisition #: 1455Job Title: Network Administrator III | ExemptJob Title for Careers Page: Network Administrator IIILocation: Aberdeen Proving Grounds, MDClearance Level: Active DoD – TS / Secret with ability to obtain TSRequired Certification(s): · CompTIA Security+ CE· Cisco CCNA within 6 months
SUMMARY
At the direction of Program Leadership, provide network administration and operational support for network infrastructure. Recommend solutions for new equipment, software, network configuration, design, and management to include detail, specification, hardware components, and part numbers. Provide technical support for the operations of a fiber optic and twisted pair-based network infrastructure
JOB DUTIES AND RESPONSIBILITIES
· Installation, Configuration, and Maintenance of the Network· Expansion, Modification, Integration and Redundancy of the Network· Diagnostics and Testing of Network using software/hardware tool suites· Firewall policy Management· Traffic Analysis: NetFlow, SNMPv3 traps, syslog, wireshark, etc.· Network problem Analysis, diagnosis and resolution· Assist with security Audits
QUALIFICATIONS Required Certifications
· CompTIA Security+CE· Cisco CCNA within 6 monthsEducation, Background, and Years of Experience· 7+ years’ experience in related field· Cisco ISE subject matter expert· Install, configure, and maintain L2 and L3 switches, routers, firewalls, and other network devices.· Knowledge of VLANS, layer 2 switching, LAN Management, and Ports, protocols & services· Fabricate, test, and install Ethernet cables· Fortigate, Juniper, Palo Alto, and/or Cisco Firewalls. Fortigate Firewall experience preferred.· Familiarity with DISA STIG· Network monitoring applications e.g. Solarwinds· Familiarity with RADIUS servers, and 802.1x· Familiarity with VoIP
ADDITIONAL SKILLS & QUALIFICATIONS Required Skills
· Strong self-starter attitude, team oriented and good communication skills are a must.· CISCO ISEPreferred Skills· Experience with DoD (Army) networks· HAIPE Inline Network Encryption (TACLANE) management Unix/Linux experience· PERL/Python Scripting
WORKING CONDITIONS Environmental Conditions
· Contractor site with 0%-10% travel possible. Possible off-hours work to support releases and outages. General office environment. Work is generally sedentary innature but may require standing and walking for up to 10% of the time. The working environment is generally favorable. Lighting and temperature are adequate, and there are no hazardous or unpleasant conditions caused by noise, dust, etc. Work is generally performed within an office environment, with standard office equipment available.Strength Demands· Sedentary – 10 lbs. Maximum lifting, occasional lift/carry of small articles. Some occasional walking or standing may be required. Jobs are sedentary if walking and standing are required only occasionally, and all other sedentary criteria are met.Physical Requirements· Stand or Sit; Walk; Repetitive Motion; Use Hands / Fingers to Handle or Feel; SeeEmployees of Agile Defense are our number one priority, and the importance we place on our culture here is fundamental. Our culture is alive and evolving, but it always stays true to its roots. Here, you are valued as a family member, and we believe that we can accomplish great things together. Agile Defense has been highly successful in the past few years due to our employees and the culture we create together.
What makes us Agile? We call it the 6Hs, the values that define our culture and guide everything we do. Together, these values infuse vibrancy, integrity, and a tireless work ethic into advancing the most important national security and critical civilian missions. It's how we show up every day. It's who we are.
We also believe in supporting our employees by offering a competitive and comprehensive benefits package. To explore the benefits we offer, please visit our website under the Careers section.
Happy - Be Infectious.Happiness multiplies and creates a positive and connected environment where motivation and satisfaction have an outsized effect on everything we do.
Helpful - Be Supportive.Being helpful is the foundation of teamwork, resulting in a supportive
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