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# Senior Information Systems Security Engineer (ISSE)

- **Company:** Applied Information Sciences, Inc.
- **Location:** Washington, DC, United States
- **Experience:** Expert
- **Salary:** $101,000 - $152,000
- **Contract:** Permanent contract
- **Skills:** Cyber Security, Information Systems, Intrusion Detection and Prevention, Information Systems Security Architecture Professional
- **Published:** November 13, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9311392/senior-information-systems-security-engineer-isse

## About the Role

* Minimum 8 years of experience in the secure design, analysis, and testing of information-security systems and products.
 * Minimum 8 years of experience applying methods, standards, and approaches to ensure baseline security safeguards are appropriately implemented and documented.
 * Minimum 8 years of experience developing and updating security test plans used to identify and mitigate information-system risk.
 * Must possess at least one of the following certifications:
 + CCISO
 + CISA
 + CISM
 + CISSO
 + CISSP

## Description

At AIS, we are dedicated to providing our employees with diverse opportunities to grow their careers while supporting a variety of impactful projects. For this position, we are seeking a talented individual to join AIS as a Senior Security Engineer.

 * Core Knowledge & Skills: Designs secure architectures, leverages advanced threat detection, leads incident response, and implements security automation.
 * Work & Complexity: Manages complex incidents, conducts threat analysis, leads audits, and implements process improvements.
 * Quality & Independence: Delivers high-quality reports, aligns practices with industry standards, and operates with high autonomy.
 * Teamwork & Communication: Leads team projects, collaborates cross-functionally, mentors juniors, and resolves conflicts.
 * Consulting & Engagement: Provides strategic consulting, leads improvement initiatives, recommends advanced technologies, and manages vendor relationships., The Senior Information Systems Security Engineer leads implementation of the Security Assessment and Authorization program and supports the end-to-end RMF lifecycle for information systems. The Senior ISSE provides security engineering leadership, technical guidance, security-control expertise, risk analysis, remediation support, continuous monitoring, and authorization support., * Lead, mentor, and supervise security professionals supporting the end-to-end RMF lifecycle.
 * Coordinate RMF Prepare activities and ensure roles, responsibilities, and risk-management strategies are established and maintained.
 * Guide information-system categorization based on mission/business impact and regulatory requirements.
 * Advise on selection, tailoring, and documentation of security controls.
 * Oversee implementation of technical, operational, and management controls throughout system and application lifecycles.
 * Plan, execute, and document security-control assessments.
 * Prepare risk-management documentation supporting system authorization and executive decision-making.
 * Direct continuous monitoring and assessment activities.
 * Provide technical cybersecurity expertise supporting risk analysis, incident response, system remediation, and audit activities.
 * Work closely with technical personnel to address security configurations and technical security gaps.
 * Track and communicate security-engineering status, risks, and improvement opportunities to stakeholders.
 * Maintain current knowledge of RMF, NIST guidance, and security industry practices.