Senior Network Administrator

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 #: 1455 Job Title:Network Administrator III|Exempt Job Title for Careers Page: Network Administrator III Location: Aberdeen Proving Grounds, MD Clearance Level:Active DoD - TS / Secret with ability to obtain TS Required Certification(s):CompTIA Security+ CECisco 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 NetworkExpansion, Modification, Integration and Redundancy of the NetworkDiagnostics and Testing of Network using software/hardware tool suitesFirewall policy ManagementTraffic Analysis: NetFlow, SNMPv3 traps, syslog, wireshark, etc.Network problem Analysis, diagnosis and resolutionAssist with security Audits QUALIFICATIONS Required Certifications CompTIA Security+CECisco CCNA within 6 months Education, Background, and Years of Experience7+ years' experience in related fieldCisco ISE subject matter expertInstall, configure, and maintain L2 and L3 switches, routers, firewalls, and other network devices.Knowledge of VLANS, layer 2 switching, LAN Management, and Ports, protocols & servicesFabricate, test, and install Ethernet cablesFortigate, Juniper, Palo Alto, and/or Cisco Firewalls. Fortigate Firewall experience preferred.Familiarity with DISA STIGNetwork monitoring applications e.g. SolarwindsFamiliarity with RADIUS servers, and 802.1xFamiliarity with VoIP ADDITIONAL SKILLS & QUALIFICATIONS Required Skills Strong self-starter attitude, team oriented and good communication skills are a must.CISCO ISE Preferred SkillsExperience with DoD (Army) networksHAIPE Inline Network Encryption (TACLANE) management Unix/Linux experiencePERL/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 in nature 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 DemandsSedentary - 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 RequirementsStand or Sit; Walk; Repetitive Motion; Use Hands / Fingers to Handle or Feel; See Employees 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 atmosphere where collaboration flourishes, and collective success is celebrated. Honest - Be Trustworthy. Honesty serves as our compass, ensuring transparent communication and ethical conduct, essential to who we are and the complex domains we support. Humble - Be Grounded. Success is not achieved alone, humility ensures a culture of mutual respect, encouraging open communication, and a willingness to learn from one another and take on any task. Hungry - Be Eager. Our hunger for excellence drives an insatiable appetite for innovation and continuous improvement, propelling us forward in the face of new and unprecedented challenges. Hustle - Be Driven. Hustle is reflected in our relentless work ethic, where we are each committed to going above and beyond to advance the mission and achieve success. Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us. Apply for this job

Created: 2026-03-10