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# Information System Security Officer, Senior

- **Company:** Applied Information Sciences, Inc.
- **Location:** Washington, DC, United States
- **Experience:** Expert
- **Salary:** $120,000.0 - $181,000.0
- **Contract:** Permanent contract
- **Skills:** CompTIA Security+, Cyber Security, Information Security Management, Nmap, HP WebInspect, Information Technology, Tenable Nessus, Splunk
- **Published:** June 5, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=f39795691d0509c4

## About the Role

Do you have experience in Security system vulnerability testing?, Do you have a Bachelor's degree?, * Minimum 8+ years of ISSO or ISS Engineer experience in a cleared environment

 * Minimum 8+ years of cybersecurity or related technical experience
 * Bachelor's or advanced degree in Cybersecurity, Computer Science, IT, or related discipline. An additional 4 years' of experience will be considered in lieu of a degree.
 * DoD 8570/IAT Level II certification or equivalent (CCNA Security, CyA+, GICSP, GSEC, Security+ or SSCP)
 * Advanced experience with security tools such as:
 + Tenable Nessus / Security Center
 + Splunk
 + IBM Guardium
 + HP WebInspect
 + NMAP or similar tools
 * Deep expertise in:
 + RMF and NIST 800-53
 + System authorization processes (ATO, IATT, ATO renewals)
 + Continuous monitoring best practices
 * Active Top Secret clearance, * Experience supporting high-visibility federal or DoD programs
 * Prior experience mentoring or leading security teams

## 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 Lead Security Engineer.

 * Core Knowledge & Skills: Develops strategic security plans, applies advanced cryptography, manages security programs, and designs secure cloud architectures.
 * Work & Complexity: Leads strategic projects, integrates security into business processes, develops risk management strategies, and ensures compliance.
 * Quality & Independence: Delivers strategic projects, develops innovative solutions, maintains high standards, and ensures stakeholder satisfaction.
 * Teamwork & Communication: Leads and mentors teams, aligns efforts with organizational goals, manages performance, and develops training programs.
 * Consulting & Engagement: Provides high-level consulting, leads innovation initiatives, develops technology roadmaps, and manages vendor contracts., The Senior ISSO provides leadership and oversight for system security compliance, authorization, and continuous monitoring activities. This role ensures that systems meet all federal cybersecurity requirements and drives timely authorization outcomes while mentoring junior staff and coordinating across technical and program teams., * Lead documentation, testing, and comprehensive review of system security controls
 * Ensure full system boundary definition and accurate inventory of all technologies
 * Oversee and validate implementation of all assigned NIST 800-53 controls
 * Drive and manage system authorization (ATO) efforts to completion
 * Ensure proper system lifecycle management, including decommissioning strategies
 * Establish and enforce consistent continuous monitoring processes
 * Advise stakeholders on cybersecurity risks, compliance posture, and remediation strategies
 * Mentor Junior and Mid-level ISSOs
 * Interface with ISSMs, AO representatives, and auditors


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