ISSO - RMF/NIST Security Lead for DHS HQ

CACI International Inc.; United States; Remote; USD 90,000 - 190,000; Full time

Job summary

CACI International Inc. is seeking an Information System Security Officer (ISSO) to support DHS Headquarters.

You will lead RMF activities for ATO decisions and coordinate with system owners to maintain a secure posture across information systems. Responsibilities include developing and updating System Security Plans (SSPs), POA&Ms, and security documentation; conducting risk assessments, security testing, and continuous monitoring to protect mission data.

Qualifications

• Required: U.S. Citizenship and DHS EOD suitability
• BS/BA + 8 years of information security experience; 7+ years in the field
• Expertise in RMF, NIST, FISMA, and DHS 4300 Series compliance

Responsibilities

• Lead RMF activities for ATO decisions including system categorization, control selection, and continuous monitoring
• Develop and maintain System Security Plans (SSPs), control baselines, and inventory documentation
• Create and update POA&Ms, risk assessments, and remediation plans
• Advise system owners and executives on cybersecurity matters and remediation efforts
• Maintain security discipline across networks, devices, and data
• Conduct security assessments and vulnerability testing in support of program needs

Skills

RMF expertise

NIST guidance

FISMA compliance

SSP development

Vulnerability assessments

CISSP/CISM/CASP+

Education

BS/BA in Information Security or related field

Tools

CSAM

RegScale

eMASS

Job description

CACI International Inc. is seeking an Information System Security Officer (ISSO) to support DHS Headquarters.

You will lead RMF activities for ATO decisions and coordinate with system owners to maintain a secure posture across information systems. Responsibilities include developing and updating System Security Plans (SSPs), POA&Ms, and security documentation; conducting risk assessments, security testing, and continuous monitoring to protect mission data.