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Senior Information System Security Officer

Apex Systems

Oxon Hill, Maryland, United States Contract July 02, 2026
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Vacancy Description

Job#: 3035443

Job Description:

Senior Information System Security Officer

Location: Washington, DC (On-site)

Role Overview:

We are seeking a Senior Information System Security Officer (ISSO) to support federal systems throughout the Risk Management Framework (RMF) lifecycle. This role involves leading systems’ Authority to Operate (ATO) efforts and maintaining a security posture in compliance with federal standards. The ideal candidate will have extensive hands-on and leadership experience in information security for government environments.

Key Responsibilities:
  • Lead the end-to-end RMF lifecycle and the development of Authority to Operate (ATO) packages.
  • Manage the Plan of Action & Milestones (POA&M) process, including vulnerability tracking, prioritization, and remediation.
  • Provide information security guidance to system development teams throughout the System Engineering Life Cycle (SELC).
  • Lead security audits, ...

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    Vacancy Details

    Location Oxon Hill, Maryland
    Country United States
    Type Contract
    Category Computer Occupations
    Posted July 02, 2026

    About Apex Systems

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    Apex Systems

    Oxon Hill, United States

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