**MANTECH** seeks a motivated, career and customer-oriented **Security Specialist** to join our team in **Washington, D.C.** This is an **onsite** position. This is a position within Naval Sea Systems Command (NAVSEA) that primarily focuses on Communication Security (COMSEC) and information security management. This position is crucial for preserving the security of critical U.S. military technology and maintaining adequate support of national defense and security objectives throughout the NAVSEA Enterprise. **Responsibilities include but are not limited to:** + Full lifecycle management of COMSEC materials, equipment, and programs + Developing, implementing, and monitoring of security policies and procedures + Conducting security training for personnel handling COMSEC and other sensitive information + Managing NAVSEA security programs in assigned areas + Coordinating with internal and external stakeholders on security matters + Ensuring compliance with security regulations and conducting self-assessments + Performing other duties as assigned by the Deputy Director Corporate Programs, Security Programs, or designated representative. These duties will be within the general scope of security management and support the overall mission of the organization **Minimum Qualifications:** + High School Diploma + 6+ years of relevant experience in COMSEC, cryptography, or related areas + Experience handling COMSEC devices and cryptographic materials + Familiarity with security policy manuals, ICDs, JAFANs, and DOD manuals + Knowledge of COMSEC accountability and the procedures for equipment issue/receipt, including inventory and mailing + Must be willing to travel within the United States for site installations, training, or other mission-critical operations. Occasional CONUS or OCONUS travel may be required (up to 25%) **Preferred Qualifications:** + Experience with Navy or DoD communications systems and securing sensitive information + Bachelor's degree in Information Technology, Cybersecurity, Data Science, Computer Science, or related discipline + Completion of a Navy-approved COMSEC Manager course + Knowledge of Navy and NSA COMSEC regulations and policies + Experience with a variety of Secure Communications Equipment (i.e., Harris, Raytheon, Kenwood, Motorola, ITT Exelis) + Working knowledge of RF communications, VHF/UHF/SATCOM/Radio, and COMSEC policies **Clearance Requirements:** + Must have an active Top-Secret security clearance. **Physical Requirements:** + Must be able to walk, lift equipment weighing up to 50 pounds, and be able to carry a backpack weighing up to 25 pounds. + Must be able to remain in a stationary position 50% of the time. + Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, via email, phone, and virtual communication, which may involve delivering presentations. ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.