Network Administrator Advisor - TS/SCI required

Clearance Level
Top Secret/SCI
Network Administration
Fort Belvoir, Virginia
Onsite Workplace
Key Skills For Success

Building Architecture

Networking Technologies

Problem Solving

REQ#: RQ147257
Requisition Type: Regular
Your Impact

Own your opportunity to work with the largest government agency in the nation. Make an impact by advancing the Department of Defense’s mission to keep our country safe and secure.

Job Description

Network Administrator Advisor

Transform technology into opportunity as a Network Administrator Advisor with GDIT. A career in enterprise IT means connecting and enhancing the systems that matter most. At GDIT you’ll be at the forefront of innovation and play a meaningful part in improving how agencies operate.

At GDIT, people are our differentiator. As a Network Administrator Advisor you will help ensure today is safe and tomorrow is smarter. Our work depends on Network Administrator Advisor joining our team to support US Army Intelligence and Security Command (INSCOM).


  • This administrator will be part of a multi-functional team providing engineering and operational support for all systems that comprise the United States Army Intelligence and Security Command's (INSCOM) security perimeter architecture and network DMZs.

  • Functional tasks include system engineering, operation and support of The F5 Layer 7 Application Delivery platform, Next-generation Firewalls, Intrusion and Prevention Systems as required by DOD and Army policy, as well as INSCOM operational requirements.

  • Document all task accomplishments in Remedy ITSM, technical SOPs and/or other technical sources and work with the various established IT support elements, and Application Development teams to coordinate resolutions to complex IT issues and requirements.  

  • Standard administrative tasks include individual time, timesheet, leave, and training completion; performance management; compliance with customer organization and company standards; performing other tasks as assigned and demonstrating proficiency, accuracy and attention to detail in assigned duties. 

  • Works under the supervision of the CIOG6 and in direct support of government and contractor staff.

  • Troubleshoots all aspects of the Application Delivery architecture effectively and understands the overall configuration, logic flow, and component integration with other systems within the architecture.

  • Advanced knowledge of TCP/IP based networking components and logic

  • Advanced knowledge of TCP/IP based web application logic

  • Advanced knowledge of flow-aware security devices such as firewalls and layer 7 proxies

  • Should have good understanding of Linux shell operation

  • Working knowledge of virtual private networks and IP routing

  • Knowledge of networking concepts such as TCP/IP and other communication protocols and services: DNS, SNMP, HTTP, SSL/TLS, LDAPS, OCSP, IPSEC, SSH, Kerberos

  • Excellent analytical and problem-solving abilities.

  • Ability to efficiently prioritize and organize competing work demands with little oversight.

  • Strong working knowledge of Internet networking technologies and principals including TCP/IP and TCP/IP based services and applications.

  • Proven ability to absorb, master and leverage emerging technologies.

  • General working knowledge of Microsoft web platforms and technologies including IIS and SharePoint.

  • Proven ability to work in both a team environment and independently

  • Excellent oral, written and interpersonal communications skills.

  • Exceptional troubleshooting and problem solving abilities.

  • Strong time and attention management skills.

  • Strong attention to detail.

  • Technical diagramming (Visio) and documentation capabilities (Word, PowerPoint).

  • Excellent documentation, communication and interpersonal skills.

  • Working knowledge of DISA's Security Technical Implementation Guides (STIGS) for systems and applications.

  • High-level problem-solving skills for complex systems.

  • Detail-oriented and possesses the ability to handle multiple tasks

  • Working ability to provide incident and after action reports and analysis

  • Advanced understanding of security architectures and computer networks (LANs, net connections and IP) including common ports and protocols used by enterprise applications.

  • Working knowledge and use of the windows command prompt; ability to conduct standard troubleshooting activities with the command prompt.

  • Knowledge of planning, design, implementation, maintenance, and operation of all aspects of:

  • Layer 7 Application Delivery Controllers and Proxies

  • Next Generation Firewalls

  • Proxies

  • Intrusion and Prevention Systems

  • Network switches and routers

  • Network access (TACACS+, AD), monitoring (SNMP, Netflow), and logging (Syslog, Splunk)


● Education: High School Diploma/GED with 10 years of related experience, or Associate's Degree with 8 years of experience, or Bachelor's Degree with 6 years of experience, or Master's Degree with 4 years of experience

● Security Clearance Level: TS/SCI

● Certifications:

  • IAT II 8570 Baseline Certification - Sec+CE or equivalent

  • One of the following Computing Environment Certifications:

  • CCNP

  • CCDE

  • Brocade Certified Ethernet Fabric IP Master

  • Brocade Certified IP Master

  • F5 Certified Solution Expert,

  • Juniper Networks Certified Design Specialist - Security Design

  • Juniper Networks Certified Design Specialist - Security Design

  • VMware Certified Advanced Professional - Network Virtualization Deployment

● Location: On Customer Site

● US Citizenship: Required

●​ Additional:

  • Candidates must be willing and able to attain a CI Polygraph for certain positions as determined by the contract

  • Travel maybe required to support the mission


  • 401K with company match

  • Comprehensive health and wellness packages

  • Internal mobility team dedicated to helping you own your career

  • Professional growth opportunities including paid education and certifications

  • Cutting-edge technology you can learn from

  • Rest and recharge with paid vacation and holidays





Work Requirements
Years of Experience

10 + years of related experience

* may vary based on technical training, certification(s), or degree


CompTIA - Security+ CE - CompTIA

CCNA Routing and Switching - Cisco Systems

Travel Required

Less than 10%


U.S. Citizenship Required

About Our Work

We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

COVID-19 Vaccination

GDIT does not have a vaccination mandate applicable to all employees. To protect the health and safety of its employees and to comply with customer requirements, however, GDIT may require employees in certain positions to be fully vaccinated against COVID-19. Vaccination requirements will depend on customer site requirements.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.