Information System Security Officer (ISSO) SME
About The Position
Cintel, Inc. is seeking a highly experienced Information System Security Officer (ISSO) SME for its cybersecurity team in Huntsville, Alabama. The role serves as a senior advisor on information system security and helps ensure the confidentiality, integrity, and availability of mission-critical systems. It directly supports system accreditation, risk management, and security compliance under FISMA and NIST 800-53 frameworks, including Authority to Operate (ATO) and Plan of Action and Milestones (POA&M) processes. The successful candidate will advise system and business owners and the CISO/ISSM, oversee cybersecurity controls, maintain system security documentation, and lead or support accreditation and certification efforts, including FBI ATO processes. The position also involves vulnerability management, network self-inspections, GRC tools, continuous monitoring, and security effectiveness reporting. Cintel describes its engineers, analysts, and developers as motivated, technical, self-organized problem solvers who are trusted to develop solutions to ill-defined problems. The company values self-motivation, ongoing learning, and keeping up with technology. Cintel is a small business serving government clients across software development, energy, cybersecurity, modeling and simulation, data science, and programmatic support. It emphasizes people, connectivity, communication, and teamwork, and states that it prohibits unlawful discrimination and harassment.
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.
Nice To Haves
- CISSP or CompTIA certification.
- Experience with NIST 800-53 control implementation and GRC tools such as RiskVision, Xacta, and JCAM.
Responsibilities
- 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 protecting 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 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.
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What This Job Offers
Job Type
Full-time
Career Level
Senior
