Senior ISSO – DoD RMF & A&A Expert

Seneca Holdings; Charleston (SC); On-site; USD 110,000 - 160,000; Full time

Benefits offered by this job

Medical, dental, vision

401(k) retirement plan

Paid leave

Job summary

Great Hill Solutions, LLC seeks a highly motivated Information Systems Security Officer (ISSO) to support the National Cyber Range Complex (NCRC). The ISSO will work with the ISSM to sustain RMF posture, ensure secure facilities and tools, and coordinate security across disciplines for demanding DoD test and mission rehearsal environments.

The role entails maintaining ATO packages, monitoring threats, and enforcing security controls, with a heavy focus on RMF, DoD policies, and stakeholder

Qualifications

• Active Top Secret clearance with SCI eligibility required.
• Bachelor's degree in Cybersecurity, Information Systems, or related discipline (or 8+ years of relevant experience).
• Minimum of 5 years of cybersecurity, information assurance, and RMF experience.
• Must meet DCWF qualification requirements for the applicable work role.

Responsibilities

• Provide direct support to the ISSM on A&A activities and Continuous Monitoring.
• Maintain RMF steps throughout the system life cycle.
• Enforce cybersecurity policies, procedures, and security controls.
• Liaise with stakeholders across disciplines for security readiness.
• Maintain ATO packages in the specified System of Record (eMASS, XACTA, Keystone).
• Review audit logs to detect anomalies and threats.
• Ensure CM-approved software and antivirus definitions are in place.
• Conduct compliance/vulnerability scans and manual checks.
• Deliver ISSO-specific tasks per security plans.
• Support account management and least-privilege enforcement.
• Provide cybersecurity education and awareness to system users.

Skills

Top Secret clearance

RMF processes

Cybersecurity

DoD frameworks

Education

Bachelor's degree in Cybersecurity or related

Tools

VMware

RHEL

Ansible

Kubernetes

OpenShift

StackRox

AWS

Azure

F5 BIG-IP

Cisco networking

NetApp

Dell Blade Servers

Job description

Great Hill Solutions, LLC seeks a highly motivated Information Systems Security Officer (ISSO) to support the National Cyber Range Complex (NCRC). The ISSO will work with the ISSM to sustain RMF posture, ensure secure facilities and tools, and coordinate security across disciplines for demanding DoD test and mission rehearsal environments.

The role entails maintaining ATO packages, monitoring threats, and enforcing security controls, with a heavy focus on RMF, DoD policies, and stakeholder