Network Engineer Senior Advisor - TS/SCI w/Polygraph

Clearance Level
Top Secret SCI + Polygraph
Network Engineering
McLean, Virginia
Onsite Workplace
Key Skills For Success

Enterprise Network

Network Infrastructures

Networking Hardware

REQ#: RQ163031
Requisition Type: Regular
Your Impact

Own your opportunity to serve as a critical component of our nation’s safety and security. Make an impact by using your expertise to protect our country from threats.

Job Description

Transform technology into opportunity as a Network Engineer Sr 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 Engineer Sr Advisor you will help ensure today is safe and tomorrow is smarter. Our work depends on Network Engineer Sr Advisor joining our team to maintain the design and the integrity of the customer’s complex internal network, including customer-facing hosted and cloud environments. 


  • Responsible for the design and development of voice, video, radio frequency, and/or data communications networks

  • In-depth understanding of networking to include routing, switching, network monitoring and management

  • Strong troubleshooting skills specific to network connectivity, security, and ability to effectively work in cross functional teams as needed to resolve issues

  • SME level experience with Cisco NextGen Firewalls

  • Good team and collaboration skills

  • Ability to research and find new and innovative technologies to enhance the existing network

  • Define network strategy with respect to technology domain standards and design goals

  • Provide technical design and architectural leadership, including documenting and diagramming the logical, physical and process views

  • Experience analyzing network traffic, using a variety of network tools to assess security-related events to assist in rapid identification and isolation of issues during incidents and outages

  • Experience in designing, configuring, implementing, and troubleshooting these various network technologies and protocols

  • Experience designing, deploying, and maintaining boundary security solutions and exposure to enterprise network architecture

  • Good knowledge and hands-on experience with VXLAN/EVPN


  • The position requires an active Top Secret/SCI with Polygraph clearance

  • Bachelor’s Degree in Computer Science or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience

  • 10+ years of experience with architecting and designing IP networks and associated technologies

  • Background in Cisco ACI design, planning, implementation, and testing, based on a multi datacenter configurations

  • Experience with Data Center and co-location solutions as they relate to SDN architecture and Design

  • Experience with Network Access Control and Segmentation

  • Experience with security compliance standards

  • Experience with site-to-site VPNs and/or remote access VPNs

  • Network programmability for automating network tasks (Ansible, Puppet, Chef, Python, Rest API’s)

  • Experience configuring/administrating various network technologies including: Cisco ACI, Cisco DCNM, OTV, VMware NSX

  • Demonstrated experience designing and implementing network reference architecture from mission requirements gathering to technology rollout oversight, including capacity management, technology selection, integration of multiple tools and technical documentation

  • Familiarity with Software defined networking (SDN) Network Disaggregation technologies and methodologies along with open source solutions

  • Ability to brief complex information to senior leadership

  • Familiarity with Software defined networking (SDN) Network Disaggregation technologies and methodologies along with open source solutions .

  • Drive enhancements through full life-cycle from concept to final implementation and support

  • Installation and maintenance of network equipment

  • Troubleshooting and resolution of network issues

  • Design network architectures based on customer requirements and industry best practices

  • Development of unique solutions that will meet customer requirements and industry best practices

  • Collaborate effectively with other IT disciplines (e.g., Storage, Platform, Application) to troubleshoot and resolve complex problems

  • Develop and maintain configurations plans for Cisco ACI design, planning, implementation, and testing, based on a multi datacenter configurations

  • Create architectural design solutions and successfully present them to client stakeholders.

  • Work with infrastructure engineers to identify new products and solutions

  • Document maintenance for all computer systems and network infrastructure

  • Maintain systems and documentation as needed for audits and compliance

  • Communications with customers: keeping them  informed of incident progress, notifying of impending changes, or coordinated outages

  • Be available for other engineers and coach them to resolution

  • Participate in 24x7 on call and assist in resolving issues outside normal business hours

  • This position is on customer site


  • 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


Travel Required

Less than 10%


U.S. Citizenship Required

About Our Work

We are GDIT. A global technology and professional services company that delivers consulting, technology and mission services to every major agency across the U.S. government, defense and intelligence community. Our 30,000 experts extract the power of technology to create immediate value and deliver solutions at the edge of innovation. We operate across 30 countries worldwide, offering leading capabilities in digital modernization, AI/ML, Cloud, Cyber and application development. Together with our clients, we strive to create a safer, smarter world by harnessing the power of deep expertise and advanced technology.

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.