Information Systems Security Officer (ISSO)- Senior

Modern Technology Solutions Inc•Huntsville, AL

About The Position

We are seeking a dedicated Senior Information System Security Officer (ISSO) to provide cybersecurity expertise for a vital Department of Defense (DoD) initiative focused on space-based operations and national security. The ISSO will support the development, implementation, and maintenance of the cybersecurity program to ensure compliance with DoD security requirements and the Risk Management Framework (RMF). This role will involve working closely with multidisciplinary teams to protect critical systems and ensure mission success.

Requirements

Bachelor’s degree in Cybersecurity, Information Assurance, Computer Science, or related technical field.
10+ years experience in information systems security or related roles within DoD environments.
Knowledge of RMF processes, DoD cybersecurity standards, and NIST 800-53 control frameworks.
Familiarity with security tools such as ACAS, Nessus, Splunk, or SIEM platforms.
Strong problem-solving and analytical skills with attention to detail in a compliance-driven environment.
Excellent communication skills for collaboration with technical teams and program managers.
Active TOP SECRET (TS) clearance with eligibility for Sensitive Compartmentalized Information (SCI).
U.S. Citizenship is required for this position.

Nice To Haves

Certifications such as Security+, CEH, CISSP, or other DoD-approved cybersecurity certifications.
Experience with space-based systems or satellite communications cybersecurity.
Familiarity with implementing and maintaining security controls for classified and unclassified systems.

Responsibilities

Implement and maintain cybersecurity controls for mission systems to protect sensitive data and assets.
Assist in the development and maintenance of System Security Plans (SSPs), Risk Assessment Reports (RARs), and other RMF documentation.
Ensure compliance with DoD regulations, policies, and guidance, such as STIGs, FISMA, and NIST SP 800-53.
Support the RMF process, including categorization, control selection, assessment, and continuous monitoring of system security posture.
Assist in the preparation and submission of Authorization to Operate (ATO) packages and ensure systems maintain their authorized status.
Collaborate with engineering and operational teams to implement required security controls and resolve deficiencies.
Conduct security audits, scans, and continuous monitoring to validate compliance and identify vulnerabilities.
Maintain logs, reports, and documentation related to system access, security incidents, and cybersecurity status.
Prepare briefings and reports for program managers and stakeholders regarding cybersecurity performance and risks.
Monitor systems for security incidents, conduct initial investigations, and assist in handling and reporting incidents according to DoD protocols.
Develop and implement plans to mitigate identified vulnerabilities and reduce risks to the systems.
Liaise with Information System Security Managers (ISSMs), program leadership, and engineering teams to ensure cybersecurity objectives are met.
Support cross-functional teams to align cybersecurity efforts with mission requirements.
Ensure personnel are trained and aware of cybersecurity responsibilities, policies, and best practices relevant to the systems.