Information Security System Officer (ISSO)

The role

This person will own the day-to-day security posture of EpiSci's classified information systems across Irvine and Poway facilities. The role involves building and maintaining authorization packages under the Risk Management Framework and performing hands-on technical security tasks.

What you will do

• Maintain accredited classified systems in an authorized operating state
• Author, update, and defend RMF artifacts including SSP, SAR, and POA&Ms
• Execute continuous monitoring using ACAS, Nessus, SCAP, and STIG compliance checking
• Support design and implementation of procedures for secure facilities
• Conduct risk and vulnerability assessments of systems
• Lead periodic self-inspections and support DoD and DCSA assessments
• Serve as first-line response for classified security incidents and spillage
• Administer and harden classified computing and network infrastructure
• Manage user account provisioning and privileged access review
• Deliver security awareness and system-specific training

Required 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 +)
• Proficiency applying RMF and writing authorization packages
• Working knowledge of ICD-503, JSIG, and the NIST 800 series
• Hands-on experience with NESSUS, ACAS, DISA STIGs, STIG Viewer, SCAP Compliance Checker, and HBSS or ESS
• Experience designing, building, and maintaining information system enclaves
• Working knowledge of incident response, disaster recovery, forensic principles, continuous monitoring, and cybersecurity hygiene
• Active DoD security clearance (SECRET minimum)
• U.S. citizenship

Nice to have

• Prior SAP experience as an ISSO, ISSE, or system administrator under JSIG
• TS/SCI with the ability to obtain program access
• eMASS, Xacta, or equivalent package management experience
• Experience with DCSA DAAPM and NISPOM-governed facilities
• Prior ISSM designation, or readiness to be designated ISSM
• Hands-on Linux (RHEL, Rocky, Ubuntu) and Windows Server administration
• Familiarity with cross-domain solutions, COMSEC and TACLANE operations, or trusted download procedures
• CMMC assessment or preparation experience
• Experience supporting a rapid-prototyping or startup defense environment

Before you apply

• Must be a U.S. Citizen
• Must hold an active DoD security clearance
• Must be eligible for and willing to accept Special Access Program briefings

About the company

Applied Intuition, Inc. is a Silicon Valley company creating digital infrastructure for physical AI. EpiSci, an Applied Intuition company, develops next-generation tactical autonomy solutions for national security problems.