RMF Security Engineer & A&A Lead

Amentum company; Washington (District of Columbia); Hybrid; USD 180,000 - 220,000; Full time

Benefits offered by this job

Health insurance

401(k) matching

Educational reimbursement

Paid time off

Job summary

Amentum is seeking a Cyber Systems Engineer/ISSE in Washington, DC to safeguard government information systems and support defense and intelligence missions. You will lead RMF and ICD 503 based security assessments, coordinate with ISSMs, SCAs, and program teams to maintain secure architectures and documentation.

This role emphasizes A&A processes, continuous monitoring, audits, and rapid threat response to protect national security data in DoD/DIA contexts.

Qualifications

• Bachelor's degree in Cybersecurity, Information Technology, Computer Science, or related field.
• 3–5 years of information security or cybersecurity experience.
• DoD 8570.01-M IASAE Level II certification required.

Responsibilities

• Lead Security Authorization efforts (A&A) per RMF and ICD guidance.
• Develop and maintain SSPs, CONOPS, CP, SOPs, and other security docs.
• Collect BoEs and artifacts; prepare for A&A and POA&M mitigations.
• Coordinate security milestones (ATD, IATT, ATO) with stakeholders.
• Support audits and ISCM/OA strategy updates.

Skills

RMF lifecycle

ICD 503

A&A coordination

ISSM/SCAs liaison

Security documentation

Education

Bachelor's in Cybersecurity/IT/CS

Tools

SharePoint

Confluence

Git

Job description

Amentum is seeking a Cyber Systems Engineer/ISSE in Washington, DC to safeguard government information systems and support defense and intelligence missions. You will lead RMF and ICD 503 based security assessments, coordinate with ISSMs, SCAs, and program teams to maintain secure architectures and documentation.

This role emphasizes A&A processes, continuous monitoring, audits, and rapid threat response to protect national security data in DoD/DIA contexts.