ISSO

Leidos

Confirmed live 2 days ago High trust

Quick summary

Work type
On-site
Location
Alexandria, VA
Salary
$107,900–$195,050 / yr
Posted
14 days ago
Freshness
Confirmed live 2 days ago

Market check

Salary context

Competitive pay

How this pay compares to similar roles

Similar $155k
This role $151k
$97k most similar roles pay here $206k

This role pays more than 50% of similar roles. Most pay $124,252–$186,200 — the shaded band above. At the midpoint, this role pays about $151k versus about $155k for comparable roles.

Based on 239 similar postings.

Employer

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations.

Leidos currently has 264 open roles on FindRole.

Listed pay typically runs $92,300–$166,850 across 245 roles with salary data.

Most-posted roles

View all roles at Leidos

At a glance

TL;DR · ISSO

The ISSO supports a large enterprise IT contract for the DOD, focusing on maintaining and reviewing Authority to Operate documentation throughout the system lifecycle. The role involves managing Risk Management Framework System Security Packages within the XACTA system, validating administrator permissions, and ensuring systems operate as intended across multiple enclaves. Key responsibilities include developing Plan of Action and Milestones to track vulnerabilities, coordinating with engineering teams for remediation, and updating configuration records in tools like ServiceNow or other CMDB platforms. The position requires expertise in security accreditation frameworks including NIST, RMF, Common Criteria, and Intelligence Community Directives. Candidates must possess a deep understanding of information security technical principles to mitigate risks and maintain compliance with DoD, DISA, and industry standards while ensuring the continuous security posture of enterprise services within a complex government environment.

What you'll do

  • Maintain and update Authority to Operate (ATO) documentation throughout the system lifecycle.
  • Manage System Security Packages (SSP) and configuration records within the XACTA system.
  • Develop, monitor, and update Plan of Action & Milestones (POA&Ms) for open risks and vulnerabilities.
  • Coordinate with system administrators to remediate security vulnerabilities identified by the Cyber Security division.
  • Review and maintain CONOPs, Disaster Recovery plans, and other required documentation for production systems.
  • Track and document risk acceptance requests for vulnerabilities that cannot be immediately remediated.
  • Conduct testing and assessments to ensure continuous compliance with NIST, RMF, and DoD standards.
  • Provide status updates and briefings on security posture to government and program leadership.

What we're looking for

  • US Citizenship is required.
  • Must possess a TS/SCI clearance with a Polygraph or be willing to obtain one.
  • Bachelor's degree in a technical field with 8 years of experience, or a Master's degree with 6 years of experience.
  • Must meet DoDM 8140.03 (formerly DoD 8570) IT System Admin Intermediate certification requirements such as Security+, GSEC, or higher.
  • Experience using XACTA to track and validate accreditation packages is required.
  • Practical experience applying ICD-503 Risk Management Framework and understanding DoD/IC security policies is required.
  • Experience with IT Service Management (ITSM) tools like ServiceNow or Remedy is required.
  • Preferred certifications include CISSP or CISM.

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