Senior Information Security Manager (ISSM) - RMF/A&A Expert

Cornerstone Defense; Reston (VA); On-site; USD 140,000 - 190,000; Full time

Job summary

Cornerstone Defense seeks an Information System Security Manager (ISSM) with TS/SCI/Polygraph to support operations in Reston, VA. You will deliver security outcomes in collaboration with cyber and information security specialists.

You will oversee RMF/A&A processes, review system documentation, and ensure compliance with ICD 503, NISPOM and sponsor policies. You will produce reports, advise on risk, and deliver training to program personnel.

Responsibilities

• Review and analyze systems architecture diagrams and networks.
• Support RMF A&A requirements and apply ICD 503, NISPOM and other federal guidelines.
• Advise program system owners on creation of required system documentation and evidence.
• Assess security controls and data protection in sponsor information systems.
• Create POA&Ms and coordinate risk acceptance through the SA and AO.
• Produce annual A&A trends and risk mitigation recommendations.
• Ensure compliance with sponsor AIS policies and requirements.
• Write reports analyzing sponsor or partner systems and propose mitigations.
• Conduct cyber security briefings and training for program personnel.

Job description

Cornerstone Defense seeks an Information System Security Manager (ISSM) with TS/SCI/Polygraph to support operations in Reston, VA. You will deliver security outcomes in collaboration with cyber and information security specialists.

You will oversee RMF/A&A processes, review system documentation, and ensure compliance with ICD 503, NISPOM and sponsor policies. You will produce reports, advise on risk, and deliver training to program personnel.