Tenable-Focused Vulnerability Engineer - Secret Clearance

PGTEK; Fort Meade (FL); Hybrid; USD 130,000 - 160,000; Full time

Benefits offered by this job

Health insurance

401(k) match

PTO & holidays

Education assistance

Job summary

PGTEK is seeking a Security Engineer, Vulnerability Management to administer and optimize our Tenable.sc/ACAS environment, drive remediation across enterprise systems, and support DoD RMF compliance. The role combines platform expertise with Windows/Linux administration and cross-team collaboration.

The ideal candidate will have 5+ years in vulnerability management, hands-on Tenable.sc/Nessus/ACAS in federal settings, and active DoD Secret clearance with DoD 8570/8140 Level II certs.

Qualifications

• 5+ years of experience in vulnerability management, information assurance, or systems security, preferably in a DoD or federal environment.
• Hands-on experience administering Tenable.sc, Nessus, and ACAS in a DoD or federal environment.
• Working knowledge of DoD STIGs, CKLs, and RMF processes.
• Strong Windows and Linux administration experience.
• Active DoD Secret clearance required; clearance must be current and verifiable.
• DoD 8570/8140 IAT Level II baseline certification required, such as: CompTIA Security+ CE, CySA+, GSEC, SSCP, CCNA-Security.
• Strong written and verbal communication skills with the ability to collaborate effectively across technical teams.

Responsibilities

• Administer and optimize Tenable.sc and Nessus, including scan policies, scan zones, repositories, credentials, and audit files.
• Perform credentialed vulnerability scans, STIG compliance scans, discovery scans, and port scans.
• Analyze and interpret STIGs, CKLs, ACAS/Tenable findings, and vulnerability results to support compliance and risk reduction.
• Leverage Windows and Linux administration skills to support and troubleshoot authenticated vulnerability scanning.
• Conduct false-positive analysis and validation to ensure accurate vulnerability reporting.
• Collaborate with Cloud, Network, Platform, Security, and Engineering teams to drive vulnerability remediation and system hardening.
• Identify and close gaps in vulnerability scan coverage to ensure comprehensive visibility across the environment.
• Perform asset discovery and maintain accurate inventories to ensure all in-scope systems are included in scanning cycles.
• Analyze scan results to identify coverage gaps, unscanned assets, and compliance blind spots.
• Recommend corrective actions to improve vulnerability visibility, scanning effectiveness, and overall security posture

Skills

Vulnerability management

Tenable.sc

Nessus

Windows administration

Linux administration

Education

Active DoD Secret clearance

DoD 8570/8140 IAT Level II baseline certifications (Security+ CE, CySA+, GSEC, SSCP, CCNA-Security)

Tools

Tenable.sc

ACAS

Nessus

Job description

PGTEK is seeking a Security Engineer, Vulnerability Management to administer and optimize our Tenable.sc/ACAS environment, drive remediation across enterprise systems, and support DoD RMF compliance. The role combines platform expertise with Windows/Linux administration and cross-team collaboration.

The ideal candidate will have 5+ years in vulnerability management, hands-on Tenable.sc/Nessus/ACAS in federal settings, and active DoD Secret clearance with DoD 8570/8140 Level II certs.