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From the employer's careers site First seen 15 Nov 2026

Information Systems Security Officer (ISSO)

Leidos Chantilly, VA senior full-time

Salary

$107,900 - $195,050 per year

Apply on Leidos

Description

Leidos is seeking a TS/SCI with Polygraph cleared Information Systems Security Officer (ISSO) to support its information assurance and cybersecurity mission.

The ISSO will be responsible for ensuring the implementation, maintenance, and compliance of security controls for critical information systems.

Key Responsibilities:

  • Provide consulting to Agencies on Requests for Service for the design, development, and deployment of Ongoing Assessment, Ongoing Authorization, and other Information Assurance (IA) initiatives.
  • Ensure system security measures comply with applicable government policies.
  • Ensure that system security requirements are addressed throughout the project and system lifecycle.
  • Review system security A&A package submissions for consistency, completeness, and traceability ensuring compliance.
  • Develop, maintain, and facilitate the appropriate closure of POA&Ms and facilitate with the Agency-designated security Point of Contact (PoC)/ISSO any related remediation activities.
  • Ensure the development, documentation, and presentation of IS security education, awareness, and training activities for users and others, as appropriate.
  • Ability to manage multiple high visibility security projects and adjust to quick shifts in customer priorities while meeting all mission requirements.
  • Familiarity with controlling, labeling, virus scanning, and appropriately transferring data (uploading/downloading) between information systems at varying classification levels.
  • Performing Nessus scans and other vulnerability tools and interpreting the results.
  • Provide support for daily inquiries, data calls, and information collection, as well as maintaining status documents and project tracking.

Qualifications:

  • Must currently possess an active TS/SCI with Polygraph.
  • BA or BS degree with 8+ years of experience, or Master's Degree with 5 years of experience, in a broad range of assignments with 4 years focused on security and/or ISSO work.
  • CISSP.
  • Will substitute additional experience and certifications in lieu of degree.

Preferred Qualifications:

  • Security+.
  • GSEC Security Essentials.
  • GIAC Information Security Fundamentals.

Pay Range: $107,900.00 - $195,050.00

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Skills

Required

  • CISSP
  • GSEC Security Essentials
  • GIAC Information Security Fundamentals
  • Nessus scans
  • Vulnerability assessment

Nice to have

  • Security+

Ready to apply?

You apply with the employer directly. Their original posting is here: https://leidos.wd5.myworkdayjobs.com/en-US/External/job/Chantilly-VA/Information-System-Security-Officer--ISSO-_R-00196834

Apply on Leidos