Principal Cybersecurity Engineer

Are you ready to provide technical leadership for a mission-critical cybersecurity environment supporting the Department of War (DoW)?

Leidos is seeking a Principal Cybersecurity Engineer to support the C5

ISR Center Cyber Security Service Provider (CSSP), a premier defensive cyber operations organization operating 24x7x365. The CSSP provides continuous monitoring, threat detection, incident response, and vulnerability management across a complex, multi‑tenant enterprise environment.

As the Principal Cybersecurity Engineer
, you will serve as Leidos' primary technical interface to the Government lead for Enterprise Cybersecurity. You will provide strategic and hands‑on technical leadership across cybersecurity architecture, engineering, modernization, and technology integration.

You will evaluate emerging cybersecurity technologies, recommend and design enterprise solutions, and lead feasibility studies, proofs of concept, pilot projects, and other research and development initiatives designed to strengthen the customer's cybersecurity posture.

Hybrid - 3 days on site at Adelphi, MD

U.S. Citizenship with an active TS/SCI with SAP Eligibility

CISSP

• Lead the design, architecture, integration, and implementation of complex enterprise cybersecurity systems and supporting technologies.
• Serve as a senior technical advisor to Government stakeholders and Leidos leadership on enterprise cybersecurity strategy, architecture, risk, and modernization.
• Assess organizational progress against cybersecurity strategies and develop recommendations aligned with mission objectives and stakeholder priorities.
• Evaluate emerging cybersecurity technologies and lead feasibility studies, proofs of concept, pilot programs, and technology assessments.
• Assess enterprise cybersecurity risk, including weaknesses in platforms, access controls, system configurations, networks, applications, and data environments.
• Provide engineering leadership for the design, development, and implementation of solutions that protect and monitor enterprise networks and systems.
• Lead the development and integration of innovative cybersecurity solutions through collaboration with engineering, operations, cybersecurity, Government, and industry experts.
• Identify security‑relevant data, technologies, and capabilities across on‑premises, hybrid‑cloud, and multi‑cloud environments and provide formal technical recommendations to stakeholders.
• Guide cybersecurity modernization initiatives, including the migration of services, applications, and data from on‑premises environments to hybrid and multi‑cloud architectures.
• Engage with technology vendors, evaluate solutions, and recommend technologies for enterprise implementation.
• Influence technical and organizational change by communicating complex cybersecurity concepts, recommendations, and approaches to technical and executive stakeholders.

• Bachelor's degree in Cybersecurity, Computer Science, Information Technology, Engineering, or a related technical discipline with 12+ years of relevant IT/cybersecurity experience. Four additional years of relevant experience may be considered in lieu of a degree.
• 4+ years of cybersecurity engineering experience directly supporting the Federal Government as a Government or contractor employee.
• Extensive experience developing and executing migration strategies for services, applications, or data moving from on‑premises environments to hybrid or multi‑cloud architectures.
• Strong knowledge and operational experience with Federal cybersecurity requirements and frameworks, including NIST, FISMA, and FedRAMP.
• Deep understanding of cybersecurity architecture, technical platforms, threat management,…