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# Senior Information Systems Security Officer (ISSO)

- **Company:** Base-2 Solutions, LLC
- **Location:** Reston, VA, United States
- **Experience:** Expert
- **Salary:** $10,000.0
- **Contract:** Permanent contract
- **Skills:** Xacta, Systems Engineering, Cyber Security, Data Security, Information Security Management, Zero Trust Network Access, IT Architecture, Splunk
- **Published:** October 26, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9264360/senior-information-systems-security-officer-isso

## About the Role

* Security+ or other IAT II/III level certification that is currently active.
 * Proficiency with XACTA and RMF process, including managing IATT and ATO processes.
 * Proficiency with Splunk.
 * Experience conducting assessments of existing IT architecture for compliance with security requirements from applicable security frameworks (such as ICD 503).
 * Experience with implementing and maintaining system security documentation, including SSPs, SAPs, POA&Ms, and security assessment artifacts, coordinating closely with ISSMs, ISSEs, system owners, and authorizing officials., * Prior Information System Security Officer or Information System Security Engineer experience
 * Proven experience leading cybersecurity initiatives for significant programs, showcasing a comprehensive understanding of large-scale program requirements.
 * Demonstrated success in team management, highlighting the ability to effectively guide and coordinate cybersecurity professionals.
 * Strong background in communication, with a track record of effectively engaging with customer, program leads, leadership teams, and engineers to convey complex cybersecurity concepts and strategies.

Required Education and Experience Equivalency

 * 18 Years of experience in Security, Cyber, or Systems Engineering roles or a highly related field of work with similar scope and responsibilities.
 * A bachelor's degree may be substituted for 4 years of experience and a master's degree may be substituted for 6 years of experience.

Required Security Clearance

 * Active Top Secret/SCI with CI Polygraph
 * U.S. citizenship is required

## Description

As a Senior Level Information Systems Security Officer (ISSO) at Base-2 Solutions you will play a pivotal role in shaping and enhancing cybersecurity initiatives., * Conduct technical security assessments and contribute to the security systems.

 * Ensure system security compliance, manage risks, and support certification activities throughout the program life cycle.
 * Work with the application leads, sysadmins, dbas, developers and testers to ensure the assigned systems are security compliant and achieve/maintain ATO.
 * Answer questions to ensure systems are developed with security compliance built in.
 * Support security assessment events and respond to all questions from ISSMs and SCAs
 * Develop and maintain SSPs, POA&Ms, and other required security documentation using XACTA.
 * Drive IATT and ATO efforts, coordinating with stakeholders, cyber, and Authorizing Official (AO).
 * Implement and validate NIST 800-53 controls in cloud-native DPaaS environments.
 * Apply Zero Trust principles to secure data services, including identity, segmentation, and flow control.