Senior ISSO, RMF Lead for OT/Platform IT

OneZero Solutions; Baltimore (MD); On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Life insurance

401(k) with company matching

Paid time off and holidays

Employee referral program

Educational assistance

Job summary

OneZero Solutions, LLC is seeking an Information System Security Officer Level II to lead RMF for USCG SFLC OT systems in Baltimore, MD. The role prepares authorization packages, conducts continuous monitoring, and maintains ATO readiness.

Strong experience with NIST RMF, STIGs, and DoD/USCG cybersecurity policies is required. The position is primarily on-site at SFLC Baltimore with potential satellite site and occasional travel; a security clearance is not required, but US citizenship is

Qualifications

• Five or more years of cybersecurity experience with at least three years in ISSO or RMF duties in a federal environment.
• Experience preparing and maintaining A&A packages under NIST SP 800-37.
• Experience creating, tracking, and closing POA&M and maintaining artifacts.
• Experience running or interpreting STIG-based compliance assessments and vulnerability scans.
• Experience maintaining cybersecurity documentation in government A&A tracking tools.
• Active IAM-level certification (e.g., CISSP, CISM, CAP/CGRC, CASP+) before onboarding.
• English fluency in reading, writing, and speaking.

Responsibilities

• Serve as designated ISSO for SFLC Operational Technology and lead RMF for those systems.
• Support ISSM and staff in maintaining cybersecurity programs and policies.
• Draft or revise SFLC policy documentation for ISSM approval.
• Prepare and maintain RMF A&A packages and ensure timely submission to Authorizing Official.
• Maintain HBSS/ESS compliance and review system reports.
• Create and validate RMF accounts in government systems and tools.
• Track RMF and A&A status and related documentation for authorized access.
• Manage POA&M for OT from creation through closure with stakeholders.

Skills

RMF process

A&A preparation

POA&M management

Vulnerability scans

Policy compliance

Documentation

Education

Bachelor's degree in cybersecurity or related field

Tools

eMASS

Nessus

DISA STIGs

ACAS

Job description

OneZero Solutions, LLC is seeking an Information System Security Officer Level II to lead RMF for USCG SFLC OT systems in Baltimore, MD. The role prepares authorization packages, conducts continuous monitoring, and maintains ATO readiness.

Strong experience with NIST RMF, STIGs, and DoD/USCG cybersecurity policies is required. The position is primarily on-site at SFLC Baltimore with potential satellite site and occasional travel; a security clearance is not required, but US citizenship is