Tenable ACAS Specialist

Position Location: Alexandria VA
Job Code: 1652
Number of Openings: 1


Job Title: Tenable ACAS Specialist

Location: Alexandria, VA

Shift: Monday - Friday (Standard hours)

Required Security Clearance: Secret – TS/SCI eligible

Required Certifications:

  • DoD 8570 IAT II
  • Windows Server 2012 or 2016 experience and certification

Required Education:  Bachelor’s degree in Computer Science or related discipline

Description and Responsibilities:

This position serves as a member of the Tenable ACAS team responsible for operating and maintaining the Joint Service Provider’s Assured Compliance Assessment Solution (ACAS) program. This position supports timely and accurate scanning and reporting per JSP and DoD policies and orders. Activities that this position will execute include deploying, configuring, operating, monitoring, tuning, upgrading, and troubleshooting Tenable components spanning a large and complex environment.

  • Serve as an integral member of a team of Tenable specialists supporting various organizations across the National Capital Region
  • Complete the following key functions for Tenable deployments across JSP’s area of responsibility:
  • Install updates to Tenable software as released and in compliance with STIG requirements
  • Deploy, maintain, and tune Tenable scanners to meet current and future needs
  • Create, deploy, and manage Tenable scan configurations
  • Conduct scans and provide reporting to the JSP DCO leadership as well as scanned organizations
  • Ensure that the ACAS scanners and Security Center are operational and reporting properly
  • Assist customers in resolving ACAS issues
  • Perform monthly vulnerability scans and create repositories, queries, and dashboards as necessary to ensure vulnerability report information is available
  • Investigate false positives or potentially confusing scan data results
  • Develop tracking mechanism for false positives and track false positives until the finding is corrected; provide results upon resolution


  • Bachelor's degree and 4+ years of prior IT experience with experience working with Tenable Security Center and Tenable Nessus agents within the DoD environment. Additional work experience or Cyber courses/certifications may be substituted in lieu of degree.
  • DoD 8570 IAT II
  • Windows Server 2012 or 2016 experience and certification
  • Experience with multiple network security zones, subnetting, VRFs, and VLANs
  • Motivated self-starter with strong written and verbal communication skills, and the ability to create complex technical reports on analytic finding.
  • Demonstrated analytical and troubleshooting skills.
  • Must be a US Citizen.
  • Must hold a Secret clearance with TS/SCI eligibility preferred

Working Conditions:

Work is typically based in a quiet office environment or electronics research lab. Business work hours for this position are based solely on the requirements of the program. Additional details on the precise hours will be informed to the candidate from the Program Manager/Hiring Manager.

Employment Type: Full-Time


Federal Data Systems, LLC offers competitive compensation, a flexible benefits package, career development opportunities that reflect its commitment to creating a diverse and supportive workplace.  Benefits include, not all inclusive – Medical, Vision & Dental Insurance, Paid Time-Off & Company Paid Holidays, Personal Development & Learning Opportunities.


This employer participates in E-Verify and will provide the federal government with your Form I-9 information to confirm that you are authorized to work in the U.S.

Federal Data Systems, LLC (FEDDATA) is an Equal Opportunity/Affirmative Action Employer. That does not unlawfully discriminate in any of its programs or activities on the basis of race, color, religion, sex, age, sexual orientation, gender identity, national origin, disability, protected veteran status, or any other basis prohibited by applicable law. 

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