Information System Security Officer (ISSO) SME

Cintel Inc•Huntsville, AL

3d•Onsite

About The Position

Cintel, Inc. is seeking an experienced Information System Security Officer (ISSO) SME to join its cybersecurity team in Huntsville, Alabama. The position serves as a senior advisor on information system security and supports the confidentiality, integrity, and availability of mission-critical systems. Work includes system accreditation, risk management, and compliance with FISMA and NIST 800-53 frameworks, including support for Authority to Operate (ATO) and Plans of Action and Milestones (POA&Ms). Cintel describes its engineers, analysts, and developers as motivated, technical, self-organized problem solvers who are trusted to develop solutions for ill-defined problems. The company values self-motivation, willingness to learn, adaptability, and keeping up with technology trends. Cintel is a small business supporting government clients across software development, energy, cybersecurity, modeling and simulation, data science, and programmatic services. It emphasizes people, connectivity, communication, teamwork, and equal employment opportunity.

Requirements

At least 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 and 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.
Self-motivation, adaptability, and problem-solving ability in environments with vague problems or incomplete requirements.

Nice To Haves

CISSP or CompTIA certification.
Experience with NIST 800-53 control implementation and GRC tools such as RiskVision, Xacta, and JCAM.
Eagerness to learn new skills and keep up with technology trends.

Responsibilities

Serve as the primary security advisor to the Information System Owner, Business Process Owner, and CISO/ISSM.
Ensure 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 protecting information system assets.
Develop, maintain, and revise system security documentation, including System Security Plans, Contingency Plans, and ATO packages.
Lead and support system accreditation and certification efforts, including work 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 use GRC tools such as RiskVision, Xacta, and JCAM for continuous monitoring and compliance tracking.
Produce regular security effectiveness reports and recommend procedures or technologies to improve security posture.