COMSEC Engineer Security Clearance

Position: COMSEC Engineer with Security Clearance
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- Description The Department of Homeland Security (DHS) is looking for a COMSEC Custodian to provide ongoing support for DHS Homeland Enterprise Information Technology Secure Services & Support (HEITS) to ensure the continued operations, maintenance, and evolution of the Homeland Secure Data Network (HSDN) and the Classified Local Area Network (C-LAN). As a COMSEC Custodian on the HEITS program, your duties will include:
* Adhering to and ensuring user compliance with the customer’s COMSEC policies and procedures.
* Configuring and installing crypto hardware, troubleshooting issues as they arise, and providing quick resolutions to minimize user downtime.
* Maintaining the health and functionality of crypto devices in operation, minimizing downtime during maintenance periods.
* Protecting and maintaining keying and other COMSEC materials, updating keying material according to customer-designated time frames.
* Documenting and tracking all devices and materials across multiple accounts and systems.
* Demonstrating accountability for all devices and materials during yearly audits.
* Providing COMSEC Custodian training to teammates and stakeholders.
* Coordinating with customers, teammates, and users to maintain compliance with security standards and deployment schedules.
* Collaborating with and supporting the customer on technical matters related to the organization’s overall mission. Qualifications for the COMSEC Custodian position include:
* Bachelor's degree with 8-12 years of relevant experience, or Master's degree with 6-10 years of relevant experience.
* Active TS/SCI government security clearance.
* Knowledge of current crypto devices/methods and COMSEC principles and practices.
* Ability to implement processes and maintain administrative documentation.
* Basic understanding of network transport devices attached to encryption devices (e.g., routers, switches, firewalls).
* Basic understanding of information security practices and devices.
* Strong collaboration and customer service skills.
* Ability to work in a fast-paced, collaborative team environment.
* Flexibility and adaptability to changing situations.
* Self-starter with the ability to work independently and in team environments. Preferred qualifications for the COMSEC Custodian position include:
* Experience in network and network security design, including managing the design, installation, and support of LAN/WAN-based networks and security components such as routers, switches, firewalls, and datacenter equipment.
* Ability to solve complex engineering problems and implement innovative solutions to customer challenges.
* IT certifications such as A+, CCNA, CCNP, Security+, CISSP, etc. If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.

Original Posting:
July 22, 2026 For U.S. Positions:
While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range:
Pay Range $92,300.00 - $ The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit  . Pay and Benefits Pay and benefits…