SME – Information Security Analyst DoS CSS

OneZero Solutions • Washington, DC

1d • Remote

About The Position

The SME – Information Security Analyst is the program's most senior ISSO practitioner. The SME serves as ISSO of record for DT/EA/CST's High Value Assets, High-baseline, cloud/hybrid, and most complex consular systems; leads categorization, control selection, and authorization packages for new and re-authorizing systems; and acts as technical mentor and peer reviewer for the Senior and Information Assurance analysts.

Requirements

• Ten (10)+ years of information security experience, including six (6)+ years as an ISSO or A&A lead for federal information systems.
• Expert working knowledge of NIST SP 800-37 Rev. 2, SP 800-53/53A Rev. 5, SP 800-60, SP 800-34, and FIPS 199/200; demonstrated experience authoring complete authorization packages.
• Experience as ISSO for High-baseline or HVA systems, or for cloud/hybrid authorization boundaries.
• Current CISSP (or CISM, or CGRC/CAP with CISSP obtained within 12 months).
• Active, final SECRET security clearance; U.S. citizenship.
• Experience managing POA&Ms and authorization packages in an enterprise GRC tool.
• Excellent technical writing skills; able to produce Government-ready artifacts with minimal editing.
• Bachelor's degree in Computer Science, Information Technology, Cybersecurity, or a related field, or an additional four (4) years of directly relevant ISSO experience in lieu of degree.

Nice To Haves

• Master's degree in a related field.
• Department of State (DT/CA/CST) experience; ArchAngel and iPost proficiency.
• CISA, CRISC, or CCSP certification.
• Experience with FedRAMP inheritance, DevSecOps pipeline controls, and Privacy (PIA) / Digital Identity (DIRA, NIST SP 800-63) assessments.

Responsibilities

• Serve as ISSO of record and primary cybersecurity point of contact for an assigned portfolio of approximately 3–4 HVA, High-baseline, or otherwise complex systems.
• Lead RMF Steps 1–3 for new and re-authorizing systems: FIPS 199 / NIST SP 800-60 categorization with documented CIA justifications; baseline selection and HVA, zero-trust, and cloud overlays; Control Tailoring Rationale; Inherited Controls Matrix; SSP development; Security Plan Approval Recommendation Letter; Evidence Index; and Implementation Readiness Review.
• Develop and maintain the full authorization artifact set: SSP, Security Control Implementation Statements, PIA, DIRA, ISA/MOU, Security Assessment Plan, POA&M, SIA, system inventory, IRP, CP/ISCP, CP Test reports, and CMP.
• Lead Security Control Review Meetings and control demonstrations with the independent Security Control Assessor; attend A&A Findings Meetings; support remediation validation; prepare the AODR Information Sheet for risk briefings(RMF Steps 4–5).
• Direct system-specific security operations contractors to obtain technical evidence and implement remediation; validate closure evidence before POA&M closure.
• Maintain authoritative POA&Ms in the GRC tool with monthly updates and updates within 5 business days of status changes; ensure realistic milestones, accurate risk levels, and attached closure evidence(RMF Step 6).
• Review iPost scores weekly, coordinate remediation of findings contributing to elevated risk, and track and report findings open more than 30 days.
• Review vulnerability, KEV, CVE, and STIG scan results within 5 business days; ensure critical and high vulnerabilities are addressed within Department and BOD timelines.
• Plan and conduct annual Contingency Plan tests and Annual Control Assessments for assigned systems; document objectives, scope, results, and lessons learned.
• Perform Security Impact Analyses for CCB/ECM changes; prepare the Quarterly Configuration and Change Impact Summary.
• Coordinate with the SOC, incident response teams, and system owners on incidents; support post-incident reviews and update RMF artifacts accordingly.
• Serve as first line of defense during OIG, GAO, CISA, HVA, BOD, OMB, penetration test, and CDM audits and data calls; maintain the Audit and Data Call Response Package.
• Develop system retirement memos and POA&M (risk) transfer memos; validate and close POA&Ms at decommissioning.
• Mentor Senior and Information Assurance analysts; peer-review artifacts for accuracy, completeness, and Department format compliance.

Benefits

• health, dental, vision, and life insurance
• a 401(k) with company matching
• paid time off and holidays
• an employee referral program
• educational assistance

What This Job Offers

• Job Type: Full-time
• Career Level: Senior