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Added 11 hours ago
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Modern Technology Solutions Inc

Cyber Systems Security Engineering Specialist (MBSE)

Lexington Park, MD, United States
Lexington Park, United States

$120,000 to $145,000 USD / year

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Job details

Pay: $120,000 to $145,000 USD / year
Apply by: May 3, 2027
Experience: 2+ years experience in DoD/DoD-adjacent IT, system administration, and/or cybersecurity support
Posting language: English
Posted: Nov 4, 2026

Original job description

MTSI Defense Services Division is seeking an experienced Cyber / Systems Security Engineering Specialist (with MBSE). This 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 WBBB/RIBS-P to ensure security controls align with system boundaries and intended behavior.

Qualifications

2+ years experience in DoD/DoD-adjacent IT, system administration, and/or cybersecurity support
Clearance: Active Secret required; Top Secret strongly preferred
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

Desired Qualifictaions:

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

The pay range for this position in is $120,000/year to $145,000/year; however, base pay offered may vary depending on established government contract ranges, job-related knowledge, skills, and experience, and other factors. MTSI also offers a full range of medical, financial, and other benefits, dependent on the position offered. Base pay information is based on market location. Applications will be accepted on an ongoing basis. This posting will be renewed periodically until the position is filled.

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