Senior ISSO: RMF & Compliance Leader

APTNEXUS; Arlington (VA); On-site; USD 135,000 - 165,000; Full time

Benefits offered by this job

Onsite 5 days per week

Job summary

AptNexus is seeking an experienced Senior Information Systems Security Officer to support a civilian agency. The role involves continuous monitoring, RMF alignment, and advising on security matters for agency systems throughout their lifecycle.

Responsibilities include maintaining SA&A packages, coordinating audits, and ensuring documentation meets policy requirements. Bachelor's degree and relevant certifications are required; federal contracting experience is preferred.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related discipline.

Responsibilities

• Provide ISSO support for agency systems across their lifecycle.
• Perform daily, weekly, and continuous monitoring per RMF, policy, and requirements.
• Develop and maintain SA&A artifacts (SSPs, PTAs, PCLIAs, CPs, CPTs, BIAs, SARs).
• Maintain POA&M reports and provide remediation recommendations.
• Coordinate with System Owners to ensure security documentation and changes are evaluated for impact.

Skills

NIST RMF

SA&A artifacts

POA&M

Auditing & monitoring

Education

CISSP – Certified Information Systems Security Professional

CASP+ – CompTIA Advanced Security Practitioner

GDSA – GIAC Defensible Security Architect

Bachelor’s degree in Computer Science or Information Technology

Tools

Splunk

Elastic

CrowdStrike

Qualys

Xacta 360

Job description

AptNexus is seeking an experienced Senior Information Systems Security Officer to support a civilian agency. The role involves continuous monitoring, RMF alignment, and advising on security matters for agency systems throughout their lifecycle.

Responsibilities include maintaining SA&A packages, coordinating audits, and ensuring documentation meets policy requirements. Bachelor's degree and relevant certifications are required; federal contracting experience is preferred.