ITS, LLC · 4 hours ago
Sr. Specialist ISSE
ITS, LLC is seeking a Senior Specialist Information Systems Security Engineer (ISSE) to support the design and sustainment of secure information systems. The ISSE will ensure compliance with cybersecurity requirements and work closely with system engineers and mission stakeholders to protect mission-critical systems.
Cyber SecurityInformation TechnologySoftware Engineering
Responsibilities
Apply security engineering principles to define, document, and maintain cybersecurity requirements across system architectures, designs, and implementations
Develop and maintain security documentation including SSPs, CONOPs, SCTMs, and architecture diagrams in alignment with RMF, JSIG, ICD 503, and NIST SP 800-53
Conduct security impact analyses, risk assessments, and vulnerability reviews to ensure systems meet protection and compliance requirements
Support the development, testing, and evaluation of security controls; recommend mitigations and configuration changes to reduce system risk exposure
Work with system engineers and developers to integrate security mechanisms into system designs, including authentication, access control, encryption, auditing, and boundary protection
Participate in design reviews, technical interchange meetings, and engineering working groups to ensure cybersecurity is incorporated from concept through deployment
Provide expertise during system accreditation activities, including evidence collection, artifacts development, and coordination with Authorizing Officials (AOs) and Security Control Assessors (SCAs)
Monitor and validate continuous monitoring activities, POA&M updates, and system change control to maintain ongoing authorization
Analyze emerging threats, vulnerabilities, and operational risks; recommend proactive security enhancements
Ensure compliance with DoD, Intelligence Community, and program-specific cybersecurity directives, standards, and governing policies
Qualification
Required
Active TS/SCI security clearance
5+ years of professional experience in cybersecurity, information assurance, or systems engineering
Bachelor's degree in Computer Science, Cybersecurity, Information Systems, Engineering, or related technical discipline
Hands-on experience implementing and assessing security controls (NIST SP 800-53, ICD 503, JSIG, RMF)
Proficiency with security engineering concepts including encryption, network security, access control, secure architecture, and vulnerability management
Working knowledge of system development lifecycle (SDLC) and configuration management processes
Ability to develop, review, and maintain security documentation and technical artifacts
Strong understanding of threat models, defensive security technologies, and risk mitigation strategies
Excellent communication skills with ability to collaborate across technical and non-technical teams
Preferred
CISSP, CASP+, CEH, CCSP, or DoD 8570.01-M IAM/IASAE certifications
Experience with virtualization, cloud security, or containerized environments
Familiarity with DevSecOps toolchains and automated security testing
Experience supporting system accreditation efforts within DoD or IC environments