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Information System Security Officer (ISSO) with Security Clearance

BarbaricumWashington, DC🇺🇸United StatesPosted Sep 24, 2026

Why This Role Stands Out

This impactful role at Barbaricum offers significant growth potential as you become a key player in securing critical government software, leveraging your expertise in cybersecurity and policy. You'll thrive here if you possess a background in systems administration, software development, or systems engineering, coupled with a passion for creative problem-solving and client collaboration. Apply today to contribute to vital missions and expand your security accreditation skills!

Quick Overview

Seniority
Mid Senior
Employment type
Employee
Work mode
On Site
Location
Washington, DC, United States
Posted
Yesterday
AWS

Job Description

The Role Our team members are subject matter experts in both cybersecurity and US Government policy. We’re excited about generating creative solutions to ambiguous security requirements. Our mission is deploying software in support of our customers’ most critical needs as quickly as possible while upholding the government’s trust. We achieve this through close consultation with stakeholders and direct ownership of the Authorization to Operate (ATO) process.

We’re seeking dedicated and motivated individuals with Systems Administration, Software Development, or Systems Engineering backgrounds to join our team as an Information System Security Officer (ISSO). You will collaborate with other Palantir engineers to ensure security policies and settings are in place, build standardized security documentation, and generate evidence of compliance once settings have been applied. Core Responsibilities

  • Achieve ATOs for Palantir software across multiple government customers with minimal oversight.
  • Partner with engineers to analyze software, interpret security requirements, and plan effective control implementations.
  • Provide outstanding customer service, policy expertise, and high-quality documentation.
  • Serve as the primary in-person point of contact for one or more U.S. Government customers on cybersecurity and compliance requirements and questions.
  • Independently interpret the findings of vulnerability scanning utilities such as ACAS (Tenable Nessus) and SCAP (STIG benchmark) and manage a Plan of Actions and Milestones (POA&M) for remediation of findings. What We Value
  • Proficiency in interpreting and communicating government policy to a diverse audience.
  • Ability to multitask under pressure, using time management and organizational skills.
  • Specific experience working in both traditional on premises environments and cloud environments such as Amazon Web Services (AWS).
  • Experience accrediting IT systems against U.S. Government standards including NIST SP 800-53, CNSSI 1253, and the DISA STIGs, using frameworks like DOD RMF, ICD 503, or DIACAP.
  • Initiative in proactively identifying problems before they arise and creativity in proposing solutions. What We Require
  • Active U.S. DoD Top Secret clearance with SCI eligibility.
  • Active DOD 8140 or 8570 Certification (e.g. CISSP or Security+).
  • Active IAT II certification.
  • Minimum 2 years experience directly supporting a customer’s ATO/RMF process.
  • Proven experience using the eMASS or XACTA accreditation management software systems.
  • Be at customer site 5 days per week.
  • Ability to travel domestically and internationally 25% of the time if needed EEO Commitment All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.

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