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Information Security System Officer (ISSO)

Applied Intuition· Defense
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Poway, CA$0Full-timePosted 1w ago

About the role

ISSO responsible for day-to-day security posture of EpiSci's classified information systems across Irvine and Poway; leads RMF-based authorization packages and continuous monitoring in collaboration with ISSM and government stakeholders.

Responsibilities

  • Maintain accredited classified systems in an authorized operating state while meeting program delivery timelines
  • Author, update, and defend RMF artifacts: System Security Plans (SSP), Security Assessment Reports (SAR), POA&Ms, Risk Assessment Reports, Configuration Management Plans, Incident Response Plans, Continuous Monitoring Plans, and hardware and software baselines
  • Execute continuous monitoring: ACAS and Nessus vulnerability scanning, SCAP and STIG compliance checking, audit log review, and remediation tracking against CAT I, II, and III findings
  • Support the design, development, and implementation of procedures and systems for secure facilities, and ensure facility compliance with requirements for classified information system processing
  • Conduct risk and vulnerability assessments of planned and installed systems to identify vulnerabilities, threats, and protection needs, and recommend mitigations
  • Lead periodic self-inspections and support DoD Cybersecurity On-Site Inspections, DCSA assessments, and customer security reviews across both sites
  • Serve as first-line response for classified security incidents and spillage: detect, contain, preserve evidence, document, and escalate through the ISSM and program security chain
  • Administer and harden classified computing and network infrastructure, including standing up and configuring new enclaves
  • Manage user account provisioning, privileged access review, media control, and trusted download and data transfer procedures
  • Deliver security awareness and system-specific training to cleared users and system administrators
  • Maintain working knowledge of evolving policy, regulation, and compliance guidance affecting classified computing assets

Qualifications

  • Bachelor's degree in a relevant field, or a minimum of 5 years of ISSO, ISSE, or cybersecurity policy and engineering experience in a classified environment
  • DoD 8570/8140 IAM Level I/IAT Level 2 (Security +) as a condition of employment
  • Demonstrated proficiency applying RMF and writing authorization packages, with working knowledge of ICD-503, JSIG, and the NIST 800 series (800-53, 800-37, 800-171)
  • Hands-on experience with security tooling: NESSUS and ACAS, DISA STIGs, STIG Viewer, SCAP Compliance Checker, and HBSS or ESS
  • Experience designing, building, and maintaining information system enclaves, including the underlying computing hardware and network architecture
  • Working knowledge of incident response, disaster recovery, forensic principles, continuous monitoring, and cybersecurity hygiene
  • Active DoD security clearance (SECRET minimum) and U.S. citizenship

Skills

Required:RMF (Risk Management Framework)System Security Plans (SSP)Security Assessment Reports (SAR)Vulnerability scanning (ACAS, Nessus)Disaster recovery / incident responseDoD security clearance
Nice to have:DCSA / assessment coordination

Benefits

  • Not explicitly listed in the description
Last updated Oct 25, 2026. Interested? Apply on the company site.

About Applied Intuition

Building vehicle intelligence | Applied Intuition

Applied Intuition is the vehicle intelligence company with the tools, Vehicle OS, and autonomy stacks for creating safe, AI-powered vehicle experiences.

AIAutonomy stacksSelf-Driving SystemSimulationTesting & ValidationVehicle IntelligenceVehicle OSai-infrastructure-and-development
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