Senior Vulnerability & Endpoint Security Admin

JCS Solutions LLC; Fort Belvoir (VA); On-site; USD 70,000 - 100,000; Full time

Job summary

JCS Solutions LLC is seeking a Vulnerability Management and Endpoint Security Administrator to provide cybersecurity expertise for a high-profile DoW contract with DTRA. You will serve as a subject matter expert across vulnerability management and endpoint security, helping modernize, secure, and improve enterprise IT services across CONUS/OCONUS environments.

Requirements include a BS in a related field with 4+ years of relevant experience or 8+ years without a degree, active TS/SCI clearance,

Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Computer Science, Information Systems, or a related discipline and at least 4 years of relevant experience; or 8+ years of relevant experience in lieu of a degree.
• 4+ years of progressively responsible experience in vulnerability management, endpoint security, cybersecurity engineering, information assurance, or related enterprise cybersecurity functions.
• Strong hands-on experience with ACAS/Nessus, including scanning, policy administration, credentialed scanning, reporting, remediation, and validation.
• Strong hands-on experience with Tanium for endpoint management, compliance analysis, visibility, asset inventory, and vulnerability remediation.
• Working knowledge of Trellix endpoint-security technologies.
• Experience conducting risk-based vulnerability analysis and establishing remediation priorities.
• Experience administering and securing both Microsoft Windows and Linux environments.
• Working knowledge of DISA STIG compliance, SCC, STIG Viewer, secure configuration baselines, and security-hardening methodologies.
• Knowledge of NIST, ICD, CNSS, and DoD cybersecurity requirements and standards.

Responsibilities

• Analyze enterprise vulnerability and endpoint security posture across Windows, Linux, virtual, and enterprise environments.
• Administer and optimize ACAS/Nessus capabilities, including scan architecture, credentialed scanning, vulnerability analysis, reporting, and troubleshooting.
• Conduct in-depth vulnerability assessments and establish risk-based remediation priorities.
• Evaluate cybersecurity risks, compensating controls, remediation alternatives, and exception requests.
• Utilize Tanium to assess endpoint visibility, asset inventory, compliance posture, vulnerability exposure, and remediation requirements.
• Analyze endpoint-security posture using Trellix and associated technologies.
• Correlate security, compliance, vulnerability, and asset-management data to identify enterprise-wide risks and coverage gaps.
• Develop and recommend solutions to complex vulnerability-management and endpoint-security challenges.
• Assess vulnerability exceptions, risk-acceptance requests, and provide technical recommendations to leadership.
• Evaluate endpoint configurations and recommend security-hardening strategies aligned with STIG requirements.
• Develop dashboards, metrics, reporting, and executive-level cybersecurity summaries.
• Support incident response, threat hunting, and endpoint containment activities.
• Assess cybersecurity impacts of proposed infrastructure, software, and security-tool changes.
• Recommend improvements to vulnerability-management processes, technologies, and operating procedures.
• Develop and maintain technical standards, procedures, and knowledge documentation.
• Advise engineers, system owners, cybersecurity personnel, and leadership on risk and remediation strategies.
• Manage competing priorities while independently determining appropriate technical approaches within contractual and security requirements.

Skills

Vulnerability management

Endpoint security

Cybersecurity engineering

Active TS/SCI clearance

Communication

DoD 8140/ Cyber Workforce

Education

Bachelor's degree in Cybersecurity/IT/CS

8+ years experience in lieu of degree

Tools

ACAS/Nessus

Tanium

Trellix (EDR)

PowerShell

Python

SQL

Job description

JCS Solutions LLC is seeking a Vulnerability Management and Endpoint Security Administrator to provide cybersecurity expertise for a high-profile DoW contract with DTRA. You will serve as a subject matter expert across vulnerability management and endpoint security, helping modernize, secure, and improve enterprise IT services across CONUS/OCONUS environments.

Requirements include a BS in a related field with 4+ years of relevant experience or 8+ years without a degree, active TS/SCI clearance,