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Information Systems Security Officer 3 (ISSO 3)

T-Rex Solutions LLC
$125,000 - $215,000
parental leave, tuition reimbursement, 401(k)
United States, Maryland, Fort Meade
Mar 12, 2025

Join Our Team at T-Rex Solutions: ISSO (Ft. Meade, MD)

Are you ready to make a significant impact by supporting critical national security infrastructure? T-Rex Solutions is looking for a highly skilled ISSO to join our dynamic team at Ft. Meade, MD.

About the Role

In this role, you'll be part of a collaborative team to decompile, design, develop, debug, and test software for enterprise level applications in a Windows and Linux environment. You'll perform requirements analysis to drive requirement specifications and perform design reviews with team members and government stakeholders. Package embedded software products for release to government customers.

What You'll Do



  • Provide support for developing, implementing and enforcing information systems security policies, standards, methodologies and documentation.
  • Manage changes to systems and assesses the security impact of those changes.
  • Support security authorization activities in compliance with NSA/CSS Information System Certification and Accreditation Process (NISCAP) and DoD Information Assurance Certification and Accreditation Process (DIACAP).
  • Provide support to the Information System Security Manager (ISSM) for maintaining the appropriate operational IA posture for a system, program, or enclave
  • Obtain C&A for ISs under their purview
  • Serve as the Approval Authority for ISs under their control
  • Hardware inventory updates & change log updates, software inventory updates and change log status, work various secure the enterprise (STE) activities
  • Review Xacta notices, complete SEAR audit log records, review and address POAM for IAVAx
  • Coordinate with system owners and system administrators, perform various SSP efforts, review scans & work with system owners & system administrators to address and remediate issues, address computer incident security reports, begin authorization for new systems and reauthorization for legacy systems


What We're Looking For



  • Fifteen (15) years' experience or more
  • Bachelor's degree in Computer Science or related discipline from an accredited college or university is required. Four (4) years of additional experience as an ISSO may be substituted for a bachelor 's degree.
  • A Master's Degree in a technical discipline combined with a Bachelor's Degree, not in a technical discipline, satisfies the requirement for a Bachelor 's Degree in a technical discipline OR a Master's Degree in a technical discipline substitutes for two (2) years of required experience.
  • DoD 8570 compliance with Information Assurance Management (IAM) Level I or higher is required (ex. CAP, Security+, etc.)
  • Active TS/SCI with an appropriate polygraph is required. Poly must be current within last 4 years.


Why T-Rex?

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 $125,000 - $215,000. 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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