SME Cyber Security Engineer with Security Clearance

R-00177784 Description This Department of War enterprise data and analytics program delivers mission-critical capabilities that enable leaders across the Department to make faster, better-informed decisions using trusted data at scale. Leidos Digital Modernization sector is seeking an experienced SME Cybersecurity Engineer to support the delivery, enhancement, and adoption of enterprise data and analytics products used across multiple DoD organizations. In this role, you will work alongside government partners, engineers, and other industry teammates to translate operational and strategic requirements into scalable, production-ready solutions. You will contribute directly to product planning, execution, and continuous improvement—helping ensure capabilities are delivered efficiently, aligned to mission priorities, and positioned for sustained success. This position offers the opportunity to work on a high-visibility, enterprise program at the intersection of data, analytics, and emerging AI technologies. Ideal candidates are motivated by mission impact, comfortable operating in complex stakeholder environments, and interested in building deep domain expertise while delivering capabilities with real-world national security outcomes. Primary Responsibilities Implement and maintain cybersecurity and information assurance capabilities aligned with system accreditation requirements. Configure and manage Free and Open Source Software (FOSS), Commercial-Off-The-Shelf (COTS), and Government-Off-The-Shelf (GOTS) security tools. Support the organization’s cybersecurity posture, Risk Management Framework (RMF) activities, and Authorization to Operate (ATO) processes. Develop and sustain secure development, deployment, and operational practices for data pipelines and enterprise systems. Coordinate with enterprise security teams to manage security incidents and conduct vulnerability analysis. Enforce security policies and architectures, and execute cybersecurity compliance activities, including Continuity of Operations (COOP), backup and restoration, and patch management. Prepare, maintain, and execute a System Engineering Plan (SEP) for managing all systems architecture and system engineering related aspects of the program. Conduct systems engineering activities required to specify, build, and maintain system engineering designs for the System. Design, prepare, and document systems engineering and cybersecurity artifacts for the System. Define, document, maintain, and promulgate APIs and technical standards for using and interoperating within and outside the System. Support the design, engineering, integration, and continuously improvement the underlying infrastructure of the System. Identify, prepare, track, secure, and integrate government, commercial, and open-source tools and services into the System. Support the design, architecture, engineering, and continuously improvement all aspects of cybersecurity elements of the System. Perform site reliability engineering to build and maintain a reliable, scalable, and efficient System. Basic Qualifications Active Top Secret/SCI clearance with CI Poly. Bachelor’s degree in Computer Science, Engineering, Information Systems, Cybersecurity, or related technical discipline and 12–15 years of relevant experience OR Master’s degree in a related field and 10–13 years of relevant experience. At least one of the following foundational qualification pathways consistent with DoD 8140 requirements: Current DoD 8570/8140 baseline certification appropriate for Advanced Cyber Defense Analyst roles (e.g., GCFA or GCIA), Offerings listed in the DoD 8140 Training Repository, Demonstrated equivalent training and experience qualifying under DoD 8140 foundational qualification alternatives. Minimum of 12 years of experience in cybersecurity engineering or related field. Proficiency in configuring and managing FOSS, COTS, and GOTS security tools. Experience in developing and sustaining secure development, deployment, and operational practices. Strong knowledge of NIST security controls, IdAM services, continuous monitoring, cross-domain security services, and Zero Trust compliance. Experience in managing security incidents, conducting vulnerability analysis, and enforcing security policies. Experience in preparing and maintaining cybersecurity artifacts and Body-of-Evidence (BOE) required to support the DoD RMF process. Preferred Qualifications CISSP, CCSP, CASP+, or equivalent advanced cybersecurity certification. Experience implementing enterprise-scale Zero Trust Architecture.