We are an employee-centric company that truly values our team members and the contributions they make to our customers and the missions they support. We pride ourselves on being forward-leaning thinkers and on building teams that are, and continue to be, technically proficient across a broad range of cyber mission areas. OneZero full-time employees receive a highly competitive benefits package, including health, dental, vision, and life insurance, a 401(k) with company matching, paid time off and holidays, an employee referral program, and educational assistance. Additional details are available on our website: https://www.onezerollc.com/careers/

Position Title: Information System Security Officer (SME), Level III

Location:  USCG Surface Forces Logistics Center, 2401 Hawkins Point Road, Baltimore, MD 21226. Work may also be performed at the SFLC satellite offices at 707 East Ordnance Road, approximately one mile from the primary site, and at other sites as determined necessary by the Contracting Officer's Representative (COR).

Clearance:

• No security clearance required. This position does not involve access to classified information or classified IT systems.
• S. citizenship is required in accordance with HSAR 3052.204-71 Alternate I.

Position Summary

The senior Information System Security Officer serves as the designated ISSO for assigned USCG SFLC Operational Technology and Platform IT systems and leads the Risk Management Framework process for that portfolio. The role owns the authorization packages end to end: preparation, submission, continuous monitoring, POA&M management, and sustainment of the Authorization to Operate.

As the SME-level ISSO on the task order, this position also sets the technical standard for the Level 2 ISSOs, handles the most complex or highest-visibility systems, and is the primary ISSO interface to the OT Security Manager (ISSM) on policy, risk posture, and authorization strategy.

Key Responsibilities

• Serve as the designated OT Security Officer (ISSO) for assigned SFLC Operational Technology and lead the RMF process for those systems.
• Support the OT Security Manager (ISSM) and staff in maintaining the programs, procedures, and policies that protect Government Sensitive But Unclassified (SBU) information.
• Review existing policies, procedures, and guidelines for compliance with DHS, USCG, and DoD cybersecurity policy; draft or revise SFLC policy documentation for ISSM review and approval.
• Prepare and maintain RMF security authorization documentation for assigned OT, ensuring Assessment and Authorization (A&A) packages are completed and submitted to the Authorizing Official in sufficient time to prevent expiration of the Authorization to Operate (ATO).
• Maintain Host Based Security System (HBSS/ESS) compliance for assigned OT and review applicable system reports.
• Create and validate SFLC RMF and security authorization accounts within Government-designated systems and tools.
• Update and maintain RMF and authorization status and associated cybersecurity documentation within Government-designated tracking tools, keeping documentation current and accessible to authorized individuals.
• Manage and track POA&Ms for assigned OT from creation through closure: validate content with stakeholders, track remediation, maintain supporting artifacts, and identify items requiring waivers or risk acceptance.
• Maintain the continuous monitoring process for assigned OT and support compliance with DoD and USCG cybersecurity requirements and DISA STIGs.
• Perform vulnerability and security compliance assessments for assigned OT using Government-approved methods and tools, including DISA STIGs and Security Requirements Guides.
• Conduct, review, and analyze vulnerability and compliance scans of assigned OT, networks, devices, and associated components.
• Coordinate with system administrators and stakeholders to remediate vulnerabilities and compliance findings, and initiate protective or corrective measures per Government policy.
• Review system logs, audit records, and intrusion detection data for assigned OT to identify incidents, threats, and vulnerabilities; request system audit triggers and correlate audit records at least weekly; report incidents and log integrity gaps to the Government and coordinate incident response.
• Support the Request for Modification (RFM) and change management processes; participate in change management boards and conduct Security Impact Assessments (SIAs) on proposed changes.
• Develop and maintain connection approval documentation for assigned OT requiring USCG network connectivity, including Interconnection Security Agreements (ISAs), Memoranda of Understanding (MOUs), and Service Level Agreements (SLAs).
• Develop and coordinate Contingency Plan (CP) training and testing; coordinate annual Disaster Recovery failover testing for systems with a DR capability and document results for Government review.
• Support and coordinate external inspections, evaluations, audits, and assessments applicable to assigned OT.
• Review security exception and exclusion requests for assigned OT and provide recommendations to the Government.
• Monitor for and coordinate remediation of rogue devices and analyze potential threat vectors across related systems.
• Provide cybersecurity and A&A support throughout applicable phases of the DHS Systems Engineering Life Cycle (SELC).
• Perform Security Readiness Reviews (SRRs) for operating systems and applications associated with assigned OT.
• Review and interpret system designs and diagrams to identify interconnections, interfaces, protocols, and data types, and support selection and implementation of appropriate controls.
• Lead authorization strategy for the most complex or highest-risk systems in the assigned portfolio.

Required Qualifications

Experience

• Ten (10) or more years of cybersecurity experience, including at least five (5) years serving as an ISSO or equivalent with direct ownership of federal A&A packages.
• Demonstrated record of carrying systems to an ATO decision and sustaining authorization through continuous monitoring.
• Experience managing POA&Ms from identification through closure, including waiver and risk acceptance packages.
• Experience conducting Security Impact Assessments and participating in formal change control processes.
• Experience developing interconnection documentation (ISAs, MOUs, SLAs) and contingency/disaster recovery documentation and testing.

Certification

• Must hold and maintain at least one active certification approved for Information Assurance Management (IAM) Level II or Level III. Any one of the following satisfies the requirement:
  • CISSP - Certified Information Systems Security Professional (or CISSP Associate)
  • CISM - Certified Information Security Manager
  • CGRC - Governance, Risk and Compliance Certification (formerly CAP)
  • CASP+ - CompTIA Advanced Security Practitioner
  • GSLC - GIAC Security Leadership Certification
  • CCISO - EC-Council Certified Chief Information Security Officer (Level III only)
• Certification requirements are subject to confirmation against COMDTINST M2620.2 (series) Appendix D, the controlling USCG certification matrix. Verify the accepted certification list with the Program Manager before extending an offer.
• Evidence of active certification in good standing is required prior to onboarding. Waivers and exceptions to certification requirements will not be granted.
• Certifications must remain current, active, and in good standing throughout performance. Loss, lapse, or revocation of a required certification is grounds for removal from the contract. Continuing education required to maintain certification is at the employee's and company's expense.
• Ability to serve as the Government's primary ISSO point of contact for an assigned system portfolio.
• Strong written communication: the role produces bi-weekly written reporting and briefs the ISSM monthly.
• Ability to read, write, speak, and understand English fluently.

Preferred Qualifications

• Prior USCG, DHS, or DoD ISSO experience, particularly with Surface Domain OT or Platform IT systems.
• Familiarity with COMDTINST M2620.2 (series) and COMDTINST 5500.13 (series).
• Experience with OT/ICS or PIT systems where conventional endpoint agents cannot be deployed and compensating controls are required.
• CGRC (formerly CAP) or CISM in addition to the required baseline certification.
• Experience supporting DHS SELC-aligned acquisitions.
• Master's degree in cybersecurity, information systems, or a related field.

Technical Skills

• NIST SP 800-37 (RMF), 800-53 / 53A / 53B, 800-137 (ISCM), FIPS 199 and FIPS 200
• DHS 4300A Sensitive Systems Handbook and the DHS Systems Engineering Life Cycle (SELC)
• Government-designated A&A repositories and tracking tools (e.g., eMASS or successor)
• DISA Security Technical Implementation Guides (STIGs) and Security Requirements Guides (SRGs)
• Government-approved vulnerability scanning and compliance tooling (e.g., ACAS/Nessus, SCAP-validated scanners)
• POA&M development, tracking, and closure, including waiver and risk acceptance packages
• Operational Technology (OT), Platform IT (PIT), and industrial control system environments, including constraints on agent-based tooling
• Security Impact Assessments and change management board participation
• Interconnection documentation: ISAs, MOUs, SLAs
• Contingency planning, contingency plan testing, and disaster recovery failover exercises
• Audit log review, audit trigger configuration, and incident reporting workflows
• Security Readiness Reviews for operating systems and applications

Education

• Bachelor's degree in cybersecurity, computer science, information systems, engineering, or a related field.

OneZero Solutions, LLC is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, pregnancy, genetic information, disability, status as a protected veteran, or any other protected category under applicable federal, state, and local laws.

To request an accommodation, please contact us at [email protected] or call (202) 987-2580.