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# Senior Information Systems Security Officer

- **Company:** Mantech International Corporation
- **Location:** United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Cloud Computing, Complex Networks, Cyber Security, Nmap, HP WebInspect, Tenable Nessus, Vulnerability Analysis
- **Published:** October 22, 2026
- **Apply:** https://www.careerboard.com/us/en/find-jobs-in-United-States/-47118A8C1B64A7A191/

## About the Role

* 10 + years of related information systems security experience, or a Master's degree with 7 + years of experience.
 * Bachelor's Degree or equivalent (6 additional years of experience).
 * Must possess one or more relevant industry certifications, such as CISM, CISSP, CISSP-ISSMP, FITSP-M, GCIA, GCIH, GICSP, or GSLC.
 * Significant experience navigating technical accreditation processes, meeting strict security requirements, and creating A&A Body of Evidence (BOE) documentation.
 * Familiarity operating standard security and discovery tools including Tenable Nessus, Security Center, IBM Guardium, HP WebInspect, and Network Mapper (NMAP).
 * Proven experience managing complex network documentation, inventorying networks, and working across large technical teams to drive a standardized security agenda.

Preferred Qualifications:

 * Cloud Certification.
 * Hands-on experience utilizing cyber risk and compliance automation tools.
 * Self-starter with excellent interpersonal skills, capable of organizing boards and driving change across organizational teams.

Clearance Requirements:

 * Current/Active TS/SCI Required.
 * Abilty to obtain and maintain a polygraph.

Physical Requirements:

 * Must be able to remain in a stationary position 50% of the time.
 * Needs to occasionally move about inside the office to access file cabinets, office machinery, and other equipment.
 * Frequently communicates with co-workers, management, and customers, which may involve delivering presentations.
 * Must be able to exchange accurate information in these situations.

## Description

* Create, update, maintain, and interpret required Body of Evidence (BOE) documentation to navigate system accreditation processes.
 * Ensure the day-to-day implementation, oversight, continuous monitoring, and maintenance of system security configurations and practices.
 * Conduct required vulnerability scans, review reports to identify vulnerabilities, and perform comprehensive vulnerability analysis.
 * Develop, oversee, and track Plans of Action and Milestones (POAMs) to effectively mitigate discovered security risks.
 * Coordinate with system owners, ISSMs, and team resources to diagnose operational issues and implement necessary technology solutions.
 * Document and implement plans detailing security postures, proper configurations, and secure remote access capabilities for applications.