Information Systems Security Officer; ISSO) Security Clearance

Position: Information Systems Security Officer (ISSO) with Security Clearance
Full Visibility LLC | Full time Information Systems Security Officer (ISSO) - Quantico, United States | Posted on 08/19/2026 Job Information
* Industry IT Services
* Date Opened 08/19/2026
* Job Type Full time
* City Quantico
* State/Province Virginia
* Country United States
* Zip/Postal Code 22134 About Us Full Visibility LLC is a federally certified Small Business that delivers innovative technical solutions to address the nation’s most critical and sensitive missions. Founded in 2006, our extensive technical capabilities and expertise support federal and state government agencies with over 100 cleared technical experts specializing in mission solution areas of Digital, AI & Analytics, Cyber, and Engineering.

With offices in the National Capital Region, Quantico, VA, and Huntsville, AL -- we deliver critical technical solutions to various federal government agencies and departments.  

Job Description Full Visibility is seeking an Information Systems Security Officer (ISSO) to work in Quantico, VA. Candidate must possess an active Top Secret clearance.  The ISSO will work closely with customers to ensure the confidentiality, integrity, and availability of systems, applications, networks, and data through the planning, analysis, development, implementation, maintenance, and enhancement of information systems security programs; infrastructure; application;
Security Assessment and Authorization (SAA), IA policy directives (PD) and guides (PG); and IA Security tools, such as Tenable.io, Nessus Pro, NMap, etc. The candidate will coordinate with other ISSOs to ensure that their requirements for interconnection, policy, and procedures are met and all documentation is provided and updated as necessary. The ideal candidate will advise the customer on the use of methods such as encryption technology, vulnerability analysis, and security management standards to protect systems and applications to meet Federal Information Security Modernization Act (FISMA) requirements.  

The successful candidate will prepare documentation such as, Configuration Management Plans, Incident Response Plans, Information System Contingency Plans, and Plan of Action and Milestones (POA&M) to ensure compliance with PDs and PGs and Federal IA requirements. The candidate will identify IA vulnerabilities and coordinate with the Infrastructure and Development teams to correct, mitigate, or apply for an exception via the POA&M processes.

The candidate will review vulnerability and compliance SCAP and/or DISA STIGs scans on the infrastructure and applications to ensure patch and configuration compliance (on-premises and in the cloud). The successful candidate will prepare SAA package(s) to obtain and maintain an authority-to-operate (ATO), authority-to-test (ATT), or other SAA authority types for all systems and applications. The ISSO will attend and represent program security interests in various meetings within and outside of the program, and schedule and conduct meetings with pertinent program personnel to address findings to determine the appropriate path forward and document within the CMP and, if necessary, POA&M.  

Requirements
* Active Top Secret Clearance;
This position may require the successful completion of a Counterintelligence (CI) Polygraph.
* Bachelor's degree in information systems technology, Computer Science, Engineering, or related field. and 5+ years of experience in cybersecurity or risk management. In lieu of BS, must have 9+ years of experience with any of the following certifications: CISSP, CISM, CAP, CASP+, etc.
* Experience with application installation, configuration, and operational procedures in support of cybersecurity mandates.
* Ability to conduct the entire Risk Management Framework (RMF) through all seven steps.
* Experience with supporting information assurance and cybersecurity development of security plans or packages supporting Assessment and Authorization (A&A) of IT systems Authority to Operate (ATO), including the implementation and assessment of cybersecurity controls.
* Experience with cyber continuous diagnostics and mitigation tools, such as Splunk and Graylog.
* Experience reviewing…