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Cyber Security Engineer SME; Subject Matter Expert

Job in Clinton, Prince George's County, Maryland, 20735, USA
Listing for: Leidos Inc
Full Time position
Listed on 2026-02-12
Job specializations:
  • Engineering
    Cybersecurity, Systems Engineer
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Position: Cyber Security Engineer SME (Subject Matter Expert)

Description

Join Leidos and Shape the Future of Cybersecurity Innovation

Leidos, a Fortune 500 company, is a global leader in delivering technology solutions to customers in national security, engineering, and health industries. Guided by our Mission, Vision, and Values, we are dedicated to doing the right thing for our customers, our people, and the world.

We are seeking a highly qualified Cyber Security Engineer, Sr/SME to join our Digital Modernization Sector and support the CYBERTRON Program at Aberdeen Proving Grounds, MD. This program is at the forefront of research and development (R&D) and engineering services for the U.S. Army, delivering solutions to combat emerging cyber threats and advance Army technologies. As a key member of the leadership team, you will drive innovation and ensure mission success.

Why

Join Us
  • Impactful Work: Be part of a team that develops secure, modern technology solutions to protect national security and defeat cyber threats.
  • Leadership Opportunity: Serve as a key leader, mentor, and technical expert, shaping the future of Army technologies.
  • Collaborative Environment: Work alongside talented professionals in a dynamic and innovative setting.
  • Professional Growth: Leverage your expertise while advancing your career through challenging and rewarding projects.
Your Role and Responsibilities as a Cyber Security Engineer SME
  • Develop and implement R&D strategies aligned with the U.S. Army C5

    ISR mission objectives.
  • Evaluate and integrate emerging technologies and methodologies to drive innovation.
  • Monitor industry trends to identify opportunities for advancement.
  • Lead, mentor, and inspire the R&D team, fostering technical excellence and career development.
  • Oversee all aspects of R&D projects, ensuring alignment with DoD Cyber Security Strategy and architecture requirements.
  • Serve as the primary interface between the customer and Leidos leadership, ensuring seamless communication and collaboration.
  • Prepare and present detailed reports on project progress, findings, and outcomes to stakeholders.
  • Collaborate with customer stakeholders, functional leaders, subcontractors, and support personnel to achieve program goals.
Basic Qualifications
  • 20+ years of comprehensive cryptographic modernization and tactical radio systems experience, including:
  • Expertise in tactical ground and aviation radio systems, including legacy Warfighter Information Network - Tactical (WIN-T) architectures.
  • Extensive experience in radio cryptographic development and certification, specifically for Tactical Secure Voice systems.
  • Proven ability to conduct comprehensive TRANSEC needs assessments to identify vulnerabilities and recommend mitigation strategies.
  • Master’s degree in engineering, computer science, electronics engineering, or a related technical discipline.
  • Appropriate DoD 8750 certification (Security+ or higher)
  • Crypto Modernization: 20 years of experience in cryptographic modernization initiatives.
  • Familiarity with Government security policies and security-related technologies and auditing tools.
  • U.S. Citizenship and possession of a TS/SCI Clearance.
Preferred Qualifications
  • Experience in heterogeneous computer networking technology and work in protocol and/or interface standards specification.
  • 30+ years of comprehensive COMSEC experience, including cryptographic modernization, key management, and PKI.
  • General experience includes system engineering; electrical design, software engineering; program design and implementation; configuration management; or maintenance.
  • Experience supporting Army programs.
Clearance Required
  • Must possess an active DoD TS/SCI at time of consideration.

At Leidos, we outthink, outbuild, and outpace the status quo because the mission demands it. We’re not hiring followers—we’re recruiting those who disrupt, provoke, and refuse to fail.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider qualified applicants with criminal histories consistent with relevant laws.

Pay

Pay range is provided for planning purposes and may vary by location, experience, and internal equity. Final offer scope will reflect the candidate’s qualifications and internal guidelines.

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