Network Security Administrator - COMSEC Custodian TS SCI at TWD & Associates in Lorton, Virginia

Posted in Facilities 14 days ago.

Job Description:

Posting Title

Network Security Administrator - COMSEC Custodian TS SCI

External Job Description

The department of Homeland Security (DHS) has a continuing requirement for Secure Enterprise Network Systems, services and Support (SENS3) for the continued operations and maintenance and evolution of the Homeland Secure Data Network (HSDN) and the Classified Local Area Network (C_LAN). The Network Security Administrator/COMSEC Custodian Adheres to the customer's COMSEC policies and procedures and ensures user compliance. Teleworking available.


  • Configure and install crypto hardware; troubleshoot issues as they arise, providing quick resolution to diminish user downtime.

  • Maintain health and wellness of crypto devices currently in operations, minimizing downtime to users during operational maintenance periods.

  • Maintain and protect keying and other COMSEC materials.

  • Update keying material per customer designated timeframes.

  • Document and track all devices and materials across multiple accounts and multiple systems.

  • Demonstrate accountability of all devices and materials during yearly audits.

  • Provide COMSEC Custodian training to teammates and stakeholders.

  • Coordinate with customers, teammates, and users to maintain compliance with all security standards and maintain deployment schedules.

  • Collaborate, support, and offer advice to the customer in technical matters related to the organization's overall mission.

  • Other duties as assigned.

Job Requirements



  • BS degree and 4 - 8 years of prior relevant experience or Masters with 2 - 6 years of prior relevant experience

  • Knowledge of current crypto devices/methods as well as COMSEC principles and practices

  • Ability to implement processes and maintain administrative documentation

  • Knowledge and basic understanding of network transport devices that are attached to the encryption devices (examples: routers, switches, firewalls)

  • Knowledge and basic understanding of information security practices and devices

  • Strong collaboration and customer service skills

  • Ability to work in a fast-paced, collaborative team environment

  • Ability to be flexible and adapt to changing situations

  • Self-starter with ability to work independently as well as in team environments


  • Experience in network and network security design where under general direction, manages the design, installation and support of LAN/WAN based networks and security components such as routers, sitches and firewalls, and datacenter equipment

  • Ability to solve complex engineering problems o Implemented innovative ideas to solve customer challenges

  • IT Certifications such as A+, CCNA, CCNP, Security +, CISSP, etc.

Security Clearance requirements:

  • Existing TS/SCI clearance with DHS or another federal entity.

  • Must be able to obtain the DHS' Entry on Duty (EOD) Program Suitability

Federal Background Investigation REQUIRED - please read.

The selected candidates for this position must be able to successfully obtain and maintain a favorably adjudicated government background investigation. This background investigation requires U.S. citizenship and will include an investigation of your financial, education, employment, medical, residence, and personal records. The cost of this investigation will be paid by TWD & Associates.

Adhoc Requirements

Job Type



Lorton, VA 22079 US (Primary)


Information Technology