Senior Cyber / Systems Security Engineering Specialist (with MBSE)

Sabre Systems is currently recruiting for a Senior Cyber / Systems Security Engineering Specialist (with MBSE) for support to the V-22 Joint Program Office (PMA-275) at Patuxent River Naval Air Station in Lexington Park, MD. The candidate will support PMA-275 cyber engineering and platform/system security activities across V-22 program environments. The role blends hands-on technical administration/security operations with Systems Security Engineering (SSE) practices, supporting secure configurations, vulnerability management, compliance, and security documentation. Plus, limited MBSE experience (ability to interpret interfaces and architecture intent from program models [SysML] and technical baselines).

Primary Responsibilities:

• Execute cybersecurity compliance and engineering activities across lab, integration, and operational support environments (RDT&E and/or program networks as assigned).
• Perform vulnerability management activities including ACAS scanning coordination, patching support, remediation tracking, and security posture reporting.
• Apply DISA STIGs/SRGs for Windows, Linux, hypervisors, and network devices; support scripted evaluation where applicable.
• Support secure network segmentation concepts (VLANs, trunking, routing boundaries), firewall policy implementation/validation, and VPN administration (as directed).
• Administer and maintain Linux-based systems and services (RHEL/CentOS/Ubuntu), including directory integration and authentication controls where required.
• Support virtualization platforms (VMware ESXi/vCenter) and backup/recovery practices; help ensure availability and configuration compliance.
• Contribute to SSE/RMF-relevant artifacts and periodic submissions (plans, evidence, control implementations, scan outputs, POA&M support).
• Read/interpret relevant architecture/interface products White-Box/Black-Box (WBBB)/ Requirements, Interfaces, Behavior, Structure - Parametric (RIBS-P) to ensure security controls align with system boundaries and intended behavior.

Minimum Qualifications:

• Must have a have a master's degree in a technical or scientific field from an accredited college or university or a bachelor's degree in a technical or scientific field from an accredited college or university and an additional four (4) years of recent and relevant experience.
• 10+ years experience in DoD/DoD-adjacent IT, system administration, and/or cybersecurity support
• Strong Linux administration background (RHEL preferred) and demonstrated STIG implementation experience
• Experience with ACAS vulnerability scanning and remediation workflows
• Working knowledge of enterprise networking fundamentals (routing/switching, VLANs, firewall policy concepts)
• Experience supporting virtualization (VMware ESXi/vSphere) and backup/recovery
• Must have an active DoD Secret Clearance; Top Secret strongly preferred.
• Must be a US Citizen

Desired / Strong Plus:

• HBSS/ePO client product experience
• Familiarity with GitLab administration/secure CI/CD support in segmented environments
• Basic scripting/automation (Python, PowerShell, Ansible)
• Exposure to SSE/RMF processes and artifact preparation in program environments
• Experience supporting classified spaces and handling procedures

Location is Pax River, MD area (on-site in secure spaces as required).

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Sabre Systems, LLC, has been providing innovative technological solutions and services for Department of Defense, Federal Civilian, and commercial customers for more than 35 years. We support the ever-evolving areas of advanced communication technologies, cyber, systems and software engineering, and digital transformation.

With over three decades in business, Sabre Systems, LLC remains committed to our small business values and a people-first philosophy. We foster a welcoming, inclusive culture that values diverse perspectives and encourages open communication. Our collaborative environment supports continuous learning and professional growth at all levels. We prioritize the health, well-being, and success of our employees, offering comprehensive, evolving benefits designed to meet their diverse needs. Join us and be part of a thriving, people-driven culture.

We respect the unique perspectives that a diverse workforce of minorities, women, individuals with disabilities, and protected veterans brings not only to our company, but also to our customers. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, gender identity and sexual orientation), national origin, age, disability or genetic information.

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