Cybersecurity Jobs in Clarksburg, MD

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30d ago

Information Systems Security Engineer

System One Clarksburg, MD

Clarksburg, MD

30d ago Closed

$180k+/yr Full time Engineer Information Security Information Technology (IT)

This position is no longer accepting applications (closed Aug 28, 2026).

Job Description

On site Information Systems Security Engineer role in a classified environment, focusing on RMF and A&A, security controls, and continuous monitoring. Requires an active TS/SCI with Polygraph and IASAE Level II certification. Location: Clarksburg, MD.

Benefits

Medical
Dental
Vision
Spending accounts
Life insurance
Voluntary plans
401(k) plan

Role Overview

The Information Systems Security Engineer will support mission-critical work in a classified setting, applying cybersecurity engineering best practices across design, implementation, authorization, and ongoing compliance. The role involves work onsite in Clarksburg, MD and requires active TS/SCI with Polygraph and IASAE Level II certification.

Responsibilities

Support the full RMF lifecycle for classified systems from planning through continuous monitoring
Contribute to A&A packages and help maintain ATOs over time
Implement, assess, and validate security controls and technical requirements
Build and maintain RMF documentation and body of evidence artifacts
Support system boundary definition and security architecture documentation
Run and analyze compliance and vulnerability scans; validate results, including false positives
Support STIG implementation, configuration hardening, and remediation verification
Assist with patch validation and ongoing security compliance activities
Participate in Continuous Monitoring activities and reporting

Requirements

Active TS/SCI with Polygraph security clearance
DoD 8570/8140 IASAE Level II compliant certification (required)
Strong working knowledge of RMF
Experience supporting A&A activities and ATO processes
Experience implementing and validating security controls and supporting continuous monitoring
Familiarity with NIST SP 800-37 and NIST SP 800-53 (Rev. 3 and/or Rev. 5)
Experience with RMF cybersecurity tools such as LATTEART, XACTA, BISCOTTI, WATCHCAT, STE
Experience using compliance and configuration scanning tools
Strong documentation, analytical, and troubleshooting skills

Technologies

LATTEART
XACTA
BISCOTTI
WATCHCAT
STE

Certifications (IASAE Level II)

CISSP
CASP+
CCSP
CSSLP

Nice to Have

Experience working in classified cybersecurity environments
Familiarity with enterprise Linux, networking, and cloud environments
Experience partnering with ISSOs, ISSMs, SCAs, and System Owners
Experience supporting large-scale enterprise or mission systems
Exposure to vulnerability management automation and reporting workflows

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