Principal Cybersecurity Engineer

Sabre Systems LLC•Patuxent River, MD

13h•Hybrid

About The Position

Sabre Systems is seeking a Principal Cybersecurity Engineer to provide senior-level Information System Security Engineering (ISSE) support for a federal cybersecurity program operating under the Risk Management Framework (RMF). The role combines advanced engineering expertise with advisory duties supporting federal information systems, operational technology (OT), and hybrid cyber-physical platforms. The engineer will guide cybersecurity architecture, compliance, threat analysis, and continuous monitoring while producing technical documentation and executive-level deliverables. The position is hybrid in the National Capital Region, with on-site presence required for classified work and occasional CONUS travel. The role requires an active DoD Secret clearance or higher and U.S. citizenship. The general salary range is $160,000 to $190,000, with final compensation determined by individual qualifications and applicable contract terms.

Requirements

Bachelor’s degree in Computer Science, Cybersecurity, Information Technology, Engineering, or a related technical field.
Nine years of progressive experience in cybersecurity engineering, ISSE, RMF, or related technical domains.
An active CISSP, CISSP-ISSEP, CISSP-ISSAP, CompTIA SecurityX (CASP+), CSSLP, CCSP, or CompTIA Cloud+ certification.
Demonstrated experience executing the RMF lifecycle, including control implementation, assessment, and continuous monitoring.
Strong understanding of cybersecurity engineering, risk management, networking, vulnerabilities, laws and regulations, and secure system design.
Excellent communication skills and demonstrated experience briefing senior Government stakeholders.
Active DoD Secret clearance or higher.
U.S. citizenship.

Nice To Haves

Prior cybersecurity support experience with USCG, DHS, or DoD customers.
Experience with eMASS, ACAS/Nessus, HBSS, Tanium, Elastic SIEM, Splunk, ServiceNow, and Burp Suite.
Experience with OT/ICS/SCADA security or platform systems, such as shipboard, aviation, or industrial control systems.
Familiarity with DHS 4300A, COMDTINST cybersecurity policy, DoDAF artifacts, ITIL/DESMF processes, and DevSecOps pipelines.

Responsibilities

Serve as lead ISSE for assigned information systems, OT environments, and hybrid cyber-physical platforms.
Lead or support the full RMF lifecycle, from categorization and control selection through assessment, authorization, continuous monitoring, and decommissioning.
Develop, update, and maintain RMF documentation in eMASS, including SSPs, SCTMs, POA&Ms, SARs, contingency and incident response plans, risk analyses, inventories, diagrams, and data flows.
Conduct Security Readiness Reviews; analyze ACAS/Nessus data; validate remediation; and coordinate DISA ticket actions.
Support compliance with DoD, DHS, USCG, and DISA STIG requirements; contribute to cATO efforts, automated evidence gathering, and dashboard integration.
Perform Security Impact Assessments and participate in engineering reviews, change control boards, acquisition milestones, and technical working groups.
Integrate Zero Trust principles, RMF control requirements, and OT/ICS security considerations into system engineering and architecture.
Evaluate cyber threats, adversary TTPs, OT/ICS vulnerabilities, and supply-chain risks; recommend mitigation strategies and system-hardening approaches.
Track compliance with authoritative orders, including OPORDs, TASKORDs, FRAGOs, ALCOASTs, and TCTOs.
Produce cybersecurity readiness updates, briefings, metrics, and risk memorandums; respond to Government data calls as needed.
Mentor and provide technical leadership to junior cybersecurity team members, and recommend improvements to processes and contract operations.