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# Information System Security Officer (ISSO) SME

- **Company:** Cintel Inc
- **Location:** Huntsville, AL, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Xacta, Active Directory, Cyber Security, Information Systems, Information Security Management, Logical Security, Smartsuite, Information Technology Security Auditing, Software Vulnerability Management, Information Technology, Plan of Action and Milestones
- **Published:** October 22, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=d21e3a27b0d5d9dc

## About the Role

* 10+ years of experience in cybersecurity, risk management, or information assurance.
 * In-depth knowledge of Microsoft Windows and Active Directory environments.
 * Strong understanding of NIST 800 series publications, particularly NIST 800-53, and FISMA compliance standards.
 * Experience supporting or leading ATO accreditation/certification processes.
 * Experience with vulnerability management, security auditing, and remediation planning.
 * Bachelor's degree in Computer Science, Cybersecurity, Information Systems, or a related field.
 * Active Top Secret Clearance required.

Preferred Qualifications:

 * CISSP or CompTIA certified
 * Experience working with NIST 800-53 control implementation and GRC tools (e.g., RiskVision, Xacta, JCAM)

CULTURE REQUIREMENTS:

 * Engineers, Analysts, and Developers at Cintel, Inc. are highly motivated, technical, and self-organized. We place a lot of trust in our team members to develop technical solutions for ill-

defined problems (i.e. thrive in an environment where the problem is vague, requirements are lacking, and a solution is not obvious). We need problem solvers.

 * We want our team members to be self-motivated and eager to learn new skills. If you consider yourself a jack-of-all-trades, and are eager to keep up with the latest trends in technology, you'll fit right in.

## Description

We are seeking a highly experienced Information System Security Officer (ISSO) SME to join our cybersecurity team in Huntsville, AL. The ideal candidate will serve as a senior advisor on all matters concerning information system security, ensuring the confidentiality, integrity, and availability of mission-critical systems. This position involves direct support for system accreditation, risk management, and security compliance under FISMA and NIST 800-53 frameworks. The ideal candidate will have experience with Authority to Operate (ATO) and Plan of Action and Milestones (POA&MS)., * Serve as the primary security advisor to the Information System Owner (SO), Business Process Owner, and the CISO/ISSM.

 * Ensure the implementation and ongoing maintenance of cybersecurity controls in compliance with NIST and FISMA requirements.
 * Direct and implement security measures to protect systems from unauthorized modification, disclosure, or destruction.
 * Provide physical and logical security guidance for the protection of information system assets.
 * Develop, maintain, and revise system security documentation, including System Security Plans (SSPs), Contingency Plans, and ATO packages.
 * Lead and support system accreditation and certification efforts, including working within the FBI's ATO processes.
 * Conduct network self-inspections and manage system vulnerabilities through the creation of POA&Ms.
 * Evaluate, document, and manage NIST 800-53 control implementations.
 * Support and utilize GRC tools such as RiskVision, Xacta, and JCAM for continuous monitoring and compliance tracking.
 * Produce regular security effectiveness reports and recommend new procedures or technologies to improve posture., Information System Security Officer (ISSO) SME to join our cybersecurity team in Huntsville, AL. The ideal candidate will serve as a senior advisor on all matters concerning information system security, ensuring the confidentiality, integrity, and availability of mission-critical systems. This position involves direct support for system accreditation, risk management, and security compliance under FISMA and NIST 800-53 frameworks.