Tenable SE (ACAS) Engineer – Secret Clearance

Apex Systems; Texas; On-site; USD 83,000 - 131,000; Full time

Job summary

Everforth Apex Systems is seeking a Tenable Security Engineer to support DISA environments with expert administration of Tenable.sc and Nessus. You will run credentialed scans, interpret STIG findings, and drive remediation with security and engineering teams.

The role requires DoD Secret access, strong Windows/Linux admin skills, and collaboration across multiple IT domains on long-term contracts.

Qualifications

• Experience administering Tenable.sc/Nessus and credentialed scans.
• Strong knowledge of STIGs, CKLs, and ACAS findings.
• Proficiency in Windows and Linux administration for authenticated scans.

Responsibilities

• Manage and tune vulnerability scanning across DISA locations.
• Collaborate with Cloud, Network, Platform, Security, and Engineering teams to remediate findings.
• Perform validation, false positive analysis, and coverage assessments.

Skills

Tenable.sc

Nessus

Vulnerability scanning

STIGs/CKLs/ACAS

Windows Admin

Linux Admin

Cross-functional collab

Tools

ACAS

Nessus

Tenable.sc

Job description

Everforth Apex Systems is seeking a Tenable Security Engineer to support DISA environments with expert administration of Tenable.sc and Nessus. You will run credentialed scans, interpret STIG findings, and drive remediation with security and engineering teams.

The role requires DoD Secret access, strong Windows/Linux admin skills, and collaboration across multiple IT domains on long-term contracts.