Senior Cybersecurity Engineer

Senior Cybersecurity Engineer Lead with purpose. Defend with expertise. Join GDIT as aSenior Cybersecurity Engineerand take ownership of mission-critical cybersecurity programs that protect Department of Defense (DoD) systems. Youll serve as a key technical authority, leadingsecurity design, risk assessments, and authorization strategiesacross diverse, high-impact environments. As a senior team member, youll work both independently and collaboratively, mentor junior engineers, and drive system accreditation from strategy through executiondelivering proactive security and continuous compliance in support of national defense. What Youll Do:Lead thedevelopment, assessment, and authorization (A&A)of complex DoD systems following RMF processes (includingDAAPM 2.2, JSIG Rev 4, ICD-503).Own the creation and lifecycle management ofRMF documentation(SSPs, POA&Ms, SCTMs, risk assessments, and related artifacts).Guide teams through successfulATO/IATO achievementand ensurecontinuous monitoring and complianceacross systems.Architect and implementadvanced cybersecurity controls, ensuring resilience against evolving threats.Leverage artificial intelligence and machine learning technologies to develop, integrate, and operationalize innovative capabilities across cybersecurity applications, including threat detection, anomaly identification, automated analysis, and defensive decision support.Design and implement AI-enabled workflows that support automated vulnerability detection, continuous compliance checks, and prioritized remediation recommendations based on real-time risk scoring.Direct the deployment and administration ofcyber tools(e.g., ACAS, Splunk, HBSS) and security platforms (e.g.,eMASS).Leadvulnerability scanning, analysis, and mitigation strategies, while supporting incident response planning and readiness.Collaborate with technical leads, mission stakeholders, and leadership to developsecure, scalable solutionsaligned with DoD requirements.Evaluate and enhancesystem hardening, configuration

management, and patching processes, includingAI-assisted prioritization of patching based on exploitability, asset criticality, and threat intelligence.Act as amentorto junior and mid-level engineers, cultivating a culture of knowledge sharing and technical growth.Track and integrateevolving cybersecurity trends, threat intelligence, and DoD security guidance into ongoing support activities. Education: Bachelors degree in Cybersecurity, Information Systems, Computer Science, or a related field. Years of Experience: 10+ years of experience in cybersecurity, with deep knowledge of RMF, ATO processes, and system accreditation. Preferred Certifications (one or more):Security & Governance: CISSP, CCSP, CISM, CEH, CAPCloud & Platforms: AWS SysOps Administrator, Cloud+, Linux Essentials, SplunkTools & Management: ITILv4, Project+, eMASS, HBSS, ACAS Required Skills & Qualifications:Demonstrated leadership incybersecurity architecture,RMF compliance, andsystem accreditation.Strong technical experience withvulnerability assessment,risk mitigation, andATO lifecycle management.Experience designing or integrating AI/ML-based cybersecurity solutions, such as anomaly detection models, behavioral analytics, or automated risk scoring to drive mitigation actions, is highly desirable.Hands-on familiarity with integrating AI/ML outputs into security workflows (e.g., feeding model results into SIEMs, SOAR platforms, ticketing systems, or patch management tools).Fluency withDoD cybersecurity tools, processes, andsecure configurationpractices (e.g., STIGs, hardening guides).Ability tolead projects independently, communicate security posture to technical and executive stakeholders, and influence secure design decisions.Proven experience inmission-driven environments, effectively handling complexity, urgency, and changing priorities. Why GDIT: At GDIT, your expertise shapes national security outcomes. We empower you to:Lead with autonomy and authority.Tackle meaningful, mission-first