Senior ISSO — RMF, Incident Response & Security

Echelon Services, LLC; Charleston (SC); On-site; USD 120,000 - 150,000; Full time

Job summary

Echelon Services, LLC is seeking an Information Systems Security Officer (ISSO) in Charleston, SC. The role requires TS/SCI with CI Polygraph clearance, and responsibilities include systems security management, continuous monitoring, incident response, and RMF-based risk management across DoD-like environments.

The ISSO will develop SSPs, maintain ATO documentation, execute vulnerability assessments, and coordinate with CSSP and stakeholders to ensure compliance with STIGs/SRGs and DoD policies.

Qualifications

• Bachelor's degree in Computer Science or Information Security or related field.
• Minimum of 10 years of information security experience with focus on system security administration.
• DoD RMF experience required.

Responsibilities

• Develop and maintain system documentation for ATO, SSP, POAM, and continuous monitoring.
• Ensure SSP reflects system architecture and security controls.
• Conduct risk and vulnerability assessments and implement mitigations.
• Maintain knowledge of system architecture, OS, networks, and databases.
• Prepare evidence for audits and support audits and assessments.
• Coordinate with stakeholders during incident response activities and test IRPs.

Skills

Vulnerability scanners

SIEM

Incident response

Risk assessments

Education

BS degree in Computer Science or Information Security

Tools

SCAP Compliance Checker

ACAS Scans

Splunk

Job description

Echelon Services, LLC is seeking an Information Systems Security Officer (ISSO) in Charleston, SC. The role requires TS/SCI with CI Polygraph clearance, and responsibilities include systems security management, continuous monitoring, incident response, and RMF-based risk management across DoD-like environments.

The ISSO will develop SSPs, maintain ATO documentation, execute vulnerability assessments, and coordinate with CSSP and stakeholders to ensure compliance with STIGs/SRGs and DoD policies.