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Information Systems Security Engineer (ISSE)-SME

Job in Washington, District of Columbia, 20001, USA
Listing for: Apex Systems
Full Time position
Listed on 2026-08-07
Job specializations:
  • IT/Tech
    Cybersecurity, Information Security & Data Protection, Systems Engineer
Job Description & How to Apply Below

Information Systems Security Engineer (ISSE)-SME

We are seeking an Information Systems Security Engineer (ISSE) to support a subject matter expert role. This position involves leading accreditation and authorization reviews, documenting security controls, and navigating the customer's A&A process to achieve system approvals. The role requires working with various teams to ensure compliance with the Risk Management Framework (RMF).

Key Responsibilities

  • Lead Accreditation and Authorization (A&A) reviews by Group level ISSMs and Security Controls Assessors (SCA).
  • Document security control implementations and gather artifacts for the Risk Management Framework (RMF) and ICD 503 Security Accreditation.
  • Develop Systems Security Plans (SSP) and CONOPS by understanding project architecture.
  • Create A&A related documents such as Contingency Plans (CP), General User Guides (GUG), Privileged User Guides (PUG), and Standard Operating Procedures (SOPs).
  • Document Plans of Actions and Milestones (POA&Ms) and gather required evidence from system owners and engineering teams.
  • Coordinate with personnel to obtain A&A content and navigate the customer's A&A process for system authorizations.
  • Monitor A&A projects and report on their status.
  • Support audit liaison activities and compliance oversight to promote RMF compliance.
  • Perform technical content reviews and edits for document updates as part of the Annual ISCM and OA Strategy Plan Update.
  • Provide audit liaison support for internal and external audits and data calls.

Required Qualifications

  • Certification:
    Must meet DoD Manual 8570.01-M at the Information Assurance System Architects & Engineer (IASAE) Level II.

Preferred Qualifications

  • CISSP Level III certification is preferred.

This employer is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

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