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# Information System Security Officer (ISSO)

- **Company:** ATEA, LLC
- **Location:** Westlake Village, CA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Network Operating System (NOS), Cyber Security, Information Systems, File Transfer, Information Security Management, Internet Security, Red Hat Enterprise Linux, Security Information and Event Management, Information Technology, Tenable Nessus, Nessus, National Industrial Security Program Operating Manual (NISPOM), Scap Compliance Checker, Vulnerability Analysis
- **Published:** October 27, 2026
- **Apply:** https://www.careerbuilder.com/job-details/information-system-security-officer-isso-westlake-village-ca--1aa20e3d-8aeb-4b5c-8dc2-093f3eab8766

## About the Role

Computer Security, Nessus, Physics, Internet Security, Standard Operating Procedures (SOP), Customer Support/Service, Security Information and Event Management (SIEM), Preferred Provider Organization (PPO), Willing to Travel, Career Development, a US Citizen and possess at least a Secret ClearanceBachelor's Degree in a related discipline and at least 10 years of experience in cybersecurity or information technology (preference for managing government systems)Candidate must possess appropriate certifications such as CISSP, CASP, CISM or equivalentExperience working with eMASS for collateral systems is requiredSystem Admin experience with Red Hat Enterprise Linux (RHEL) and current Windows OS preferredExperience using Tenable Nessus/ACAS Scanning Software or equivalentKnowledge of common security technologies competent hands-on support and configuration ability in at least one security technology (i.e., SIEM)Experience in assessing systems using NIST 800-53, DISA STIGs and SRGs, SCAP Compliance Checker and/or STIG ViewerCandidate should demonstrate familiarity with NISPOM, DAAPM, RMF, CMMC and other NIST (i.e., 800-171) publicationsAbility to travel as needed, up to 20% (typically less)About ATEA Tech: We leverage the predictive

## Description

ATEA Technologies' Range Engineering & Instrumentation team is looking for an experienced Information System Security Officer (ISSO) to join our team om Westlake Village. Candidate will perform tasks related to completing (and maintaining) Assessment & Authorization (A&A) and Authorizations to Operate (ATOs) for assigned Information Systems (i.e., applications, networks, devices). This position will be part of a team developing recommended courses of action needed to maintain and enforce current Risk Management Framework (RMF) policies and procedures for compliance to support our test range customers. The position will focus on routine daily tasking directly interacting with customers to assist with management and execution of RMF activities for information systems. The position will guidance and expertise to solutions for complex problems related to securing systems across a diverse, distributed network operating in remote, challenging environments - often with broad definitions and
challenging applications of specialized theories and knowledge. The team supports security tasks outside the area of expertise as needed (e.g., program security) to help execute the mission. Responsibilities include:Drafting RMF documents (SSPs, RARs, POAMs, SCTMs, SOPs, ST&Es, etc.) as well as managing Enterprise Mission Assurance Support Service (eMASS) records for all Collateral Information Systems as requiredLead the classified incident handling process and oversee the reporting and investigation of Information System security related incidentsPerforming sustainment activities, including change management, account management, auditing, media protection, user training, file transfers, etc.Work with system administrators, engineers, and developers to create or update system/site policies, procedures, and process guidesConduct Self Assessments for risk and vulnerability assessments of information systems to identify vulnerabilities, risks, and protection needsRequirements:Candidate must be