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Senior Information System Security Officer (ISSO)

Washington, DC, US • Posted 23 hours ago • Updated 12 hours ago

Full Time

On-site

Fitment

Dice Job Match Score™

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Job Details

Skills

Security Clearance
Information System Security
Vulnerability Management
Collaboration
Backup
Risk Management Framework
RMF
Root Cause Analysis
Customer Care and Billing
Security Impact Analysis
Penetration Testing
Corrective And Preventive Action
Incident Management
Auditing
Documentation
Security Operations
Regulatory Compliance
NIST SP 800 Series
FIPS
FISMA
CISA
OMB
SAP GRC
IT Service Management
SIEM
Cloud Security
Splunk
Dashboard
ServiceNow
Reporting
Management
Nessus
Qualys
BigFix
CISSP
CISM
ISACA
Security+
Cisco Certifications
Cyber Security
Information Technology

Security Clearance
Information System Security
Vulnerability Management
Collaboration
Backup
Risk Management Framework
RMF
Root Cause Analysis
Customer Care and Billing
Security Impact Analysis
Penetration Testing
Corrective And Preventive Action
Incident Management
Auditing
Documentation
Security Operations
Regulatory Compliance
NIST SP 800 Series
FIPS
FISMA
CISA
OMB
SAP GRC
IT Service Management
SIEM
Cloud Security
Splunk
Dashboard
ServiceNow
Reporting
Management
Nessus
Qualys
BigFix
CISSP
CISM
ISACA
Security+
Cisco Certifications
Cyber Security
Information Technology

Summary

**CONTINGENT UPON CONTRACT AWARD**
Overview:

Job Title: Senior Information System Security Officer (ISSO)

Security Clearance: Ability to Obtain Tier 4 High-Risk Public Trust

Location: Washington, D.C.

(Due to the nature of the work and contract requirements, U.S. Citizenship is required.)

Description:

C3EL is seeking a Senior Information System Security Officer (ISSO) to provide on-site cybersecurity and Risk Management Framework (RMF) sustainment support in Washington, D.C., for a new contract. This role will serve as Operational Specialist for Splunk, ServiceNow, ConMon, vulnerability management, POA&M, and incident and change coordination, as well as being workstream lead and secondary backup for Lead ISSO duties.

Responsibilities will include, but not be limited to:

Provide on-site cybersecurity and RMF sustainment support.
Maintain traceability between ServiceNow remediation tickets and CSAM POA&M records.
Analyze findings, validate false positives, and prioritize remediation using CVSS, CISA KEV, exposure, exploitability, and mission impact.
Support notification, triage, CSAM context retrieval, Splunk verification, SitReps, RCA, corrective actions, and post-incident updates.
Support CAB/CCB/ERB reviews, security impact analysis, artifact updates, and post-change verification.
Track audit, penetration-test, and assessment findings through corrective action and evidence-supported closure.
Maintain incident-response plans and support tabletop or functional exercises.
Produce accurate, concise, and audit-ready Government cybersecurity documentation.
Support team coverage from 7:00 a.m. to 6:00 p.m. ET (M-F) and participate in after-hours incident coverage as needed.

Minimum Qualifications:

U.S. Citizenship.
Eligibility to obtain a Tier 4 High-Risk Public Trust.
Minimum seven (7) years of cybersecurity.
Minimum five (5) years in federal ISSO, ConMon, vulnerability, security operations, or compliance work.
Working knowledge of NIST SP 800-37, 800-53, 800-53B, FIPS 199, FISMA, and applicable CISA/OMB guidance.
Familiarity with GRC, ITSM, SIEM, scanner, identity, endpoint, and cloud-security platforms.
Direct experience with Splunk searches, dashboards, ingestion verification, log coverage, and incident timeline support.
Direct experience with ServiceNow incidents, problems, changes, remediation tickets, and reporting.
Direct experience with Tenable Nessus, Qualys, ACAS, or comparable Government-approved scanners.
Experience with Defender, Intune, BigFix, or equivalent endpoint and configuration platforms.

Preferred Qualifications:

At least one current cybersecurity certification such as CISSP, CGRC, CISM, CRISC, Security+, SecurityX, CCSP, or GIAC.

Education:

Associate's degree in Cybersecurity, Information Technology, or related field. (Relevant experience may be considered in lieu of formal education.)

Employers have access to artificial intelligence language tools (“AI”) that help generate and enhance job descriptions and AI may have been used to create this description. The position description has been reviewed for accuracy and Dice believes it to correctly reflect the job opportunity.

Dice Id: 90883148
Position Id: c1e564e1f33255aa1ee63aaf76e33f46
Posted 23 hours ago

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