Information System Security Officer (ISSO) – Level II

OneZero Solutions • Sedalia, NC

17d • Hybrid

About The Position

The ISSO Level II provides mid‑level cybersecurity support for USCG avionics systems, aviation software, and maintenance test platforms. This role helps achieve and sustain ATO compliance through DoD and NIST cybersecurity frameworks and aviation‑specific standards.

Requirements

• 3+ years of ISSO or cybersecurity experience in DoD/Federal environments
• Working knowledge of the NIST RMF and related standards, DoD security policies and standards (DoD 8510.01, DoD 8500, STIG etc.), and the DoD Security Assessment and Authorization process.
• Demonstrated proficiency in the use of security tools such as eMASS, Tenable Nessus, ACAS, etc.
• Experience with ACAS/Tenable, HBSS/ESS, and STIG/SCAP tools
• Ability to develop and update cybersecurity documentation and artifacts
• Security+
• CGRC (CAP)
• CASP+ / SecurityX
• CCISO
• CCSP
• Cloud+
• SSCP
• CSSLP

Nice To Haves

• Experience with aircraft support systems, OT, or maintenance tools preferred

Responsibilities

• Execute the NIST RMF A&A lifecycle for aviation-related systems
• Conduct vulnerability assessments and direct remediation
• Implement and validate STIGs and SCAP compliance results
• Support continuous monitoring, configuration management, and audits
• Assist in evaluating avionics updates, patches, and maintenance tools
• Collaborate with engineering, maintenance personnel, OEMs, and leadership stakeholders

Benefits

• health coverage
• 401(k) match
• PTO
• paid holidays
• referral bonuses
• educational assistance

What This Job Offers

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