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Senior Network Engineer

Type: Full-time
Category: Network Engineer
Location: McLean, VA
Clearance: TS/SCI with Poly


As a Network Engineer on our solutions delivery team, you will have the unique opportunity to work on programs advancing the digital transformation of critical government systems. This program will support one of our intelligence customers in Tysons Corner, VA.

Our delivery teams are driven to explore new ideas and technology, and care deeply about collaboration, feedback, and iteration. We have a culture of continuous improvement, we follow Scrum and lean agile practices, embrace DevSecOps model to “automate-first,” use modern tech stacks, and constantly challenge each other to grow and improve.    

If large-scale, multi-cloud, data-driven projects resonate with you, and you care deeply about joining a mission-driven company with a robust growth direction and diverse culture, we'd love to learn more about you. Check out the details below, and let’s connect.   

Mission Focus:  

As one of the industry’s leading innovators, NT Concepts is joining forces with one of the leading cloud providers to meet the ever-demanding needs of the DoD’s and Intelligence Community’s (IC) need for a variety of agile, high performance data centers and cloud service provisioning.  NT Concepts will be providing managed IT services in direct support of the newly designed and constructed cloud provisioning network Operations Centers (OC).  There will be multiple air-gapped OCs, each requiring managed IT support services, on a 24x7 basis, NT Concepts will be part of the cloud provisioning team starting with design, continuing with implementation, activation and throughout sustainment. 

Join us as we enable DoD and IC mission modernization. Enter on the ground floor. Be a part of getting it right and doing it right.  

Clearance: Active TS/SCI with Poly

Location:  Tysons Corner, Virginia area. 100% on site.  


  • Perform as the Network Engineer for the Operations Center environment(s) assigned 
  • Establish networking environment by actively: 
  • Assisting with design, specification, selection and procurement activities 
  • Participating in the installation, configuration, activation and testing of the OC system 
  • Establish and maintain network performance 
  • Build net configurations and connections 
    • IP address auditing
    • Define, document, and enforce system standards
    • Maximize performance by troubleshooting network problems and outages and scheduling upgrades
    • Configure routers
    • Update data servers and network equipment
    • Collaborate with network architects on network optimization
    • Secure network system by establishing and enforcing policies and defining and monitoring access
    • Maintain job knowledge currency by participating in educational opportunities, reading professional publications, and participating in professional organizations
  • Perform as the ISSO for the Operations Center environment(s) assigned, to include;
    • Assist the ISSM in meeting their duties and responsibilities
    • Prepare, review, and update authorization packages
    • Ensure approved procedures are in place for clearing, sanitizing, and destroying various types of hardware and media
    • Notify ISSM when changes occur that might affect the authorization determination of the information system(s)
    • Conduct periodic reviews of information systems to ensure compliance with the security authorization package
    • Coordinate any changes or modifications to hardware, software, or firmware of a system with the ISSM and AO/DAO prior to the change
    • Monitor system recovery processes to ensure security features and procedures are properly restored and functioning correctly
    • Ensure all IS security-related documentation is current and accessible to properly authorized individuals
    • Ensure audit records are collected, reviewed, and documented (to include any anomalies)
    • Attend required technical and security training (e.g., operating system, networking, security management) relative to assigned duties
    • Execute the cyber security portion of the self-inspection, to include provide security coordination and review of all system assessment plans
    • Identify cyber security vulnerabilities and assist with the implementation of the countermeasures for them
    • Prepare reports on the status of security safeguards applied to computer systems
    • Perform ISSO duties in support of in-house and external customers
    • Conduct continuous monitoring activities for authorization boundaries under your preview
    • Assist Department of Defense, National Agency and Contractor organizations with the development of assessment and authorization (A&A) efforts 


  • LCAT required years of experience: 6 (Mid), 10 (Sr), 10 (Lead) 
  • Degree required:  Bachelor’s preferred 
  • Certifications 
    • Must have Security+; Network+ considered a plus
    • Must meet position and certification requirements outlined in DoD Directive 8570.01-M for Information Assurance Technician Level II or Information Assurance Manager II within 3 months of the date of hire.
    • Cisco Certifications ultimately leading to Cisco Certified Network Professional (CCNP) within 6 months
    • CISSO, CISSP or CISM within 6 months
    • Microsoft, SolarWinds and VMware certifications considered a plus
  • Skills/Knowledge
    • Prior performance in roles such as System, Edge or Network Administrator, ISSO
    • Experience controlling, labeling, virus scanning, auditing tools, and secure data transfer between information systems.
    • Cloud Services support and provisioning: Google preferred, AWS, Azure and/or Oracle
    • Operating Systems: Windows Server Win 2022 DC and edge devices Win 11; RHEL
    • Hardware: Cisco switches, Palo Alto Firewalls, Dell precision desktops, HP DL360 servers
    • Demonstrated knowledge and use of the following regulations: JAFAN 6/0; JAFAN 6/3; DCID 6/3; Joint DoDIIS/Cryptologic SCI Information Systems Security Standards; DoD 5105.21 M-1; Sensitive Compartmented Information Administrative Security Manual; ICD 503 Regulations (Computer Security), knowledge of "New" Risk Management Framework (RMF) processes (NIST Special Publication (SP) 800-53A, Revision 5, Assessing Security and Privacy Controls in Information Systems and Organizations ).  DoD O-5205.07, Volume 3; ICD-705 and applicable DoD physical security manuals and directives 

Physical Requirements:  

  • Prolonged periods sitting at a desk and working on a computer  
  • Must be able to lift up to 10-25 pounds at times 

COVID Protocol(s): 

Personnel must be fully vaccinated against COVID-19 and retain a copy of their vaccine documentation in case it needs to be checked (subject to local laws). The host facility’s US vaccine policy requires that all individuals entering our physical workspaces be fully vaccinated against COVID-19 or have an approved accommodation or state law exemption. 



Working at NT Concepts means that you are part of an innovative, agile company dedicated to solving the most critical challenges in National Security. We're expert leaders and problem solvers who roll up our sleeves to get the job done. We're passionate, curious, and committed to doing important work. At the same time, we're life-long learners, avid mentors, and we like to have fun.

We're looking for the best and the brightest to join us in supporting the mission of National Security. If meaningful work, initiative, creativity, and continuous self-improvement are important to your career, join our growing talent network and discover What's Next for you.

NT Concepts is committed to hiring and retaining a diverse workforce. We are proud to be an Equal Opportunity/Affirmative Action Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. U.S. Citizenship is required for all positions. Contact us if you need a reasonable accommodation for any part of the employment process. All resumes are held in confidence. NT Concepts participates in E-Verify.