Tenable RHEL ACAS Administrator

Leidos•Alexandria, VA

1d•$131,300 - $237,350

About The Position

Leidos is hiring a Tenable RHEL ACAS Administrator for the DISA GSM-O program in Alexandria, Virginia. The role is part of the Tenable ACAS team that operates and maintains the DISA J6 Pentagon’s Assured Compliance Assessment Solution (ACAS), supporting timely and accurate scanning and reporting in accordance with DISA J6 Pentagon and DoD policies and orders. An active Secret security clearance is required before starting. The administrator manages the program’s Red Hat Enterprise Linux (RHEL) servers and Tenable components, analyzes systems, troubleshoots and updates applications, deploys and tests software and tools, and communicates updates to the Tenable ACAS Lead and customers. The role supports organizations across the National Capital Region and helps keep scanners and Security Center operational and reporting correctly.

Requirements

Bachelor’s degree and 12 or more years of prior IT experience, including experience with RHEL OS, Tenable Security Center, and Tenable Nessus agents in a DoD environment; additional work experience or cybersecurity courses/certifications may substitute for the degree.
Active Secret clearance or higher; the program can support up to TS/SCI.
DoD 8570 IAT II certification before starting.
Current RHEL certification or ability to obtain certification within six months of starting.
Experience running ACAS on Red Hat Enterprise Linux (RHEL).
Hands-on experience with general RHEL administration and troubleshooting.
Demonstrated experience with multiple network security zones, subnetting, VRFs, and VLANs.
Strong written and verbal communication skills and ability to create complex technical reports on analytical findings.
Strong analytical and troubleshooting skills.
Motivated self-starter.

Nice To Haves

Cybersecurity experience in Protect, Detect, Respond, and Sustain within a Computer Incident Response organization.
Advanced understanding of cybersecurity threat life cycles, attacks, attack vectors, methods of exploitation, and intrusion set tactics, techniques, and procedures (TTPs).
Experience with malware analysis concepts and methods.
Familiarity or experience with Intelligence Driven Defense, Cyber Kill Chain methodology, and/or the MITRE ATT&CK framework.

Responsibilities

Manage the RHEL servers that are part of Tenable ACAS for DISA J6 Pentagon.
Tune system performance and troubleshoot Tenable components across a large, complex environment.
Provide solution-engineering support to ensure systems and components meet current and future standards.
Install Tenable software updates in compliance with STIG requirements.
Deploy, maintain, and tune Tenable scanners, Nessus Managers, and Nessus Agents.
Develop, create, deploy, and manage Tenable scan configurations.
Conduct scans and provide detailed reports to DISA J6 Pentagon leadership and scanned organizations.
Ensure ACAS scanners and Security Center are operational and reporting properly.
Help customers resolve ACAS issues and make recommendations as needed.
Perform monthly vulnerability scans and create repositories, queries, and dashboards to make vulnerability report information available.
Investigate false positives and potentially confusing scan results.
Develop a tracking mechanism for false positives, track them until findings are corrected, and provide results upon resolution.
Support Tenable deployments across DISA J6 Pentagon’s area of responsibility as a member of a team serving organizations across the National Capital Region.
Perform systems analysis, update and troubleshoot Tenable applications, deploy and test applications and tools, and communicate updates to the Tenable ACAS Lead and customers.