Job Title: Tenable Nessus Administrator SME

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: Secret

Employee Type: Regular

Percentage of Travel Required: Up to 10%

Type of Travel: Continental US

The Opportunity:

CACI is looking for a Tenable Nessus Administrator SME to support our DoD customer to implement an enterprise IT service delivery model that provides consistent, secure, high-quality, and cost-effective services to enable mission success and improve end user experience across the customer environment. On this program, CACI will deliver enhanced capabilities and services to implement and operate an enterprise ITSM solution, enterprise service desk, endpoint management and security solution, as well as CONUS/OCONUS field support and life cycle support for end user devices to enable the DoD customer to transition focus from IT operations to mission operations.

As a Tenable Nessus Administrator SME, you will be responsible for team oversight, development, and management of ACAS scanning activities to enhance the organization's cybersecurity posture. Your primary focus will be overseeing and managing our ACAS (Assured Compliance Assessment Solution) scanning activities and the overall Tenable solution. You will work closely with the cybersecurity team, IT staff, and other stakeholders to ensure the effective operation of ACAS solution and their integration into the organization's infrastructure.

This position is Remote.

Responsibilities:

You will be a Tenable-Nessus Security Administrator SME for the Engineering Operations team for the EITaaS Enterprise solution based on Tenable-Nessus. Job duties include:

• Oversee the administration, maintenance, and sustainment of the ACAS solution

• Lead and guide the team in troubleshooting and resolving operational issues within the ACAS environment

• Maintain and configure Nessus, Nessus Manager, Nessus Agents, Nessus Network Monitor, and Security Center across Linux/Unix and Windows environments

• Direct the technical workflow of the ACAS Operations ticket queue, ensuring efficient prioritization, assignment, and resolution

• Lead special projects focused on improving and optimizing the ACAS environment

• Mentor and support the technical development of the ACAS scanning team to enhance their capabilities and operational effectiveness

• Ensure ACAS operations remain compliant with organizational security policies and industry best practices

• Develop and implement strategies to optimize scanning processes and improve overall vulnerability management

• Collaborate with cross-functional teams to address security findings and drive remediation efforts

• Generate, analyze, and present vulnerability assessment reports and risk mitigation updates to stakeholders

Tenable / ACAS Configuration Responsibilities

• Create and manage Tenable organizations, repositories, and scan zones

• Install, configure, and manage Nessus Agents

• Manage local user accounts within Tenable solutions

• Configure plugins, feeds, audit files, and scan credentials

• Define and manage scan and audit policies for Security Center and Nessus Manager

• Configure Nessus Manager scan pulls into Security Center

• Schedule, generate, and distribute scan reports

• Import, upload, analyze, and validate scan results to support vulnerability assessment workflows

Qualifications:

Required:

• Must have a Secret Clearance

• 12+ Years of relevant experience (Bachelor’s Degree in relevant field may be substituted for 5 years of relevant experience).

• Required DoD 8140 compliant certification such as CompTIA Security+

• Other relevant cybersecurity certifications like Certified Information Systems Security Professional (CISSP), or Certified Information Security Manager (CISM), are a plus.

• Proven experience as a Nessus-Tenable Security Administrator or in a similar role, with hands-on experience in managing security tools.

• In-depth knowledge of the following security technologies: Nessus Tenable (ACAS), Microsoft Defender for Endpoint, and STIG Management.

• Familiarity with network and system security principles, protocols, and configurations.

• Strong analytical and problem-solving skills to troubleshoot and resolve complex security tool issues.

• Excellent communication and collaboration skills to work effectively with cross-functional teams.

• Understanding of industry compliance standards (e.g., NIST) and relevant regulations (e.g., GDPR, HIPAA) is advantageous.

• Willingness to stay updated with the latest cybersecurity trends and emerging security tools.

What You Can Expect: A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high-performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers - every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Pay Range:

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

Since this position can be worked in more than one location, the range shown is the national average for the position.

The proposed salary range for this position is:

$90,300-$189,600

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.