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Information System Security Officer (ISSO)

T-Rex Solutions LLC
$120,000 - $160,000
parental leave, tuition reimbursement, 401(k)
United States, Virginia, Ashburn
Sep 11, 2025

T-Rex Solutions is seeking a results-driven Information System Security Officer (ISSO) to support our U.S. Customs and Border Protection (CBP) Network Operations Center (NOC). The program objective is to provide ongoing support for CBP's NOC and Wireless Network Operations Center (WNOC), which are critical components within the Office of Information and Technology. These centers perform real-time monitoring, proactive maintenance, incident detection and response, problem resolution, and network performance reporting across CBP's nationwide enterprise. They ensure network stability, availability, and the rapid escalation and resolution of technical issues. This is a 24x7x365 operation with work performed on-site in Ashburn, VA.

Responsibilities:



  • The ISSO shall ben assigned to one or more existing FISMA Systems of Record as well as new IT Systems that are slated as new work products to develop an Authority to Operate (ATO) and follow-on Continuous Monitored system.
  • Develop and maintain all required FISMA system documentation.
  • Ensure systems adhere to Technical Reference Architecture (TRA) foundational and supplemental documents as additional security specifications, when applicable (available upon request).
  • Use approved security tools for continuous monitoring and management of security baselines.
  • Implement audit tools or processes for auditing and reporting services that support Continuous Diagnostics and Monitoring (CDM).
  • Provide engineering services and participation in Continuity of Operations Planning (COOP) and Disaster Recovery (DR) planning and exercises.
  • Develop and implement Configuration Management and Change Management plans when necessary.
  • Perform or participate in threat and vulnerability management for applicable FISMA systems.
  • Perform POA&M management.


Requirements:



  • Bachelor's degree in related technical field such as Management Information Systems, Computer Science, Engineering, IT, Networking and Telecommunications.
  • A minimum of ten (10) plus years of related experience
  • Certifications, such as Network+ and Security +, CISSP and Security auditing are recommended.
  • Proficient in network and information system security principles and best practices.
  • In-depth knowledge of the Risk Management Framework (RMF), the NIST publications, and the DHS 4300A Policy Directive.
  • Experience with implementing the NIST 800-53 Security Controls in an Assessment & Authorization (A&A) process.
  • Experience reviewing Nessus scans, managing vulnerability mitigation and the information security process in an Enterprise environment.
  • Basic understanding of Enterprise networking concepts.
  • Ability to work well within a team environment and build reports with government and customer organizations.
  • US citizenship required
  • Ability to obtain and maintain a CBP public trust clearance


Desired Skills:



  • Experience directly supporting DHS, CBP or ICE Network Operations
  • Active CBP clearance, or DOD Secret clearance or higher


T-Rex Overview

Established in 1999, T-Rex Solutions, LLC is a proven mid-tier business providing data-centric mission services to the Federal government as it increasingly tries to secure and leverage the power of data. We design, integrate, secure, and deploy advanced technical solutions for our customers so they can efficiently fulfill their critical objectives. T-Rex offers both IT and professional services to numerous Federal agencies and is a leader in providing high quality and innovative solutions in the areas of Cloud and Infrastructure Services, Cyber Security, and Big Data Engineering.

T-Rex is constantly seeking qualified people to join our growing team. We have built a broad client base through our devotion to delivering quality products and customer service, and to do that we need quality individuals. But more than that, we at T-Rex are committed to creating a culture that supports the development of every employee's personal and professional lives. T-Rex has made a commitment to maintain the status of an industry leader in compensation packages and benefits which includes competitive salaries, performance bonuses, training and educational reimbursement, Transamerica 401(k) and Cigna healthcare benefits.

T-Rex is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, sex (including pregnancy and sexual orientation), parental status, national origin, age, disability, family medical history or genetic information, political affiliation, military service, or other non-merit based factors.

In compliance with pay transparency guidelines, the annual base salary range for this position is $120,000 - $160,000. Please note that the salary information is a general guideline only. T-Rex considers factors such as (but not limited to) scope and responsibilities of the position, candidate's work experience, education/training, key skills, internal peer equity, as well as market and business considerations when extending an offer.

T-Rex offers a diverse and collaborative work environment, exciting opportunities for professional growth, and generous benefits, including: PTO available to use immediately upon joining (prorated based on start date), paid parental leave, individual and family health, vision, and dental benefits, annual budget for training, professional development and tuition reimbursement, and a 401(k) plan with company match fully vested after 60 days of employment among other benefits.

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