Demo

Senior ISSO

Tetra Tech
Arlington, VA Full Time
POSTED ON 4/14/2026
AVAILABLE BEFORE 5/13/2026
About The Role

EGlobalTech, a Tetra Tech Company,

This role offers excellent compensation, career growth potential, and a total rewards package that includes PTO, paid holidays and corporate events, continuing education reimbursements, 401K, an Employee Stock Purchase Plan (ESPP) through Tetra Tech, and more!

Responsibilities

  • Assess, review, update, and develop security authorization and accreditation documentation to ensure consistency with laws, regulations, and best practices as it pertains to the systems and customer requirements.
  • Work closely with Federal customers to develop and update security-related documentation to reflect the security posture of the IT system, as directed by the government and federal program managers.
  • Prepare or assist in the preparation of other security documentation or reports as required to support customer engagements.
  • Support ISSOs in their responsibilities for systems including Enterprise security support and risk management and system weakness management (POA&M maintenance for the Risk Management Framework Portal (RMFP)).
  • Assist the Federal customer in reviewing or modifying security documentation to ensure it maintains quality and accuracy in customer products.
  • Work with Engineers and System Administrators to properly document data flows, system architecture, and other necessary diagrams/charts.
  • Work with various security tools including NESSUS, AppDetective, Web Inspect, AppScan, etc.
  • Provide administrative support as necessary, to include, but not limited to:
    • Compile, or provide input to, weekly customer status reporting (e.g. deliverables completed) and project plans
    • Assist with meeting minutes and action items as need
    • Attend customer meetings in person, unless otherwise noted
  • Advocate industry best practices on behalf of EGT Cyber Solutions Practice. Contribute to EGT business development goals by creating and developing white papers and innovative solutions.
Required Qualifications

  • 8 years of IT cybersecurity experience including direct support for the US Government and 4 years acting as an ISSO, assessor, or compliance analyst OR
  • A relevant bachelor's degree in IT, Computer Science or Engineering and 5 years of IT cybersecurity experience including direct support for the US Government and 4 years acting as an ISSO, assessor, or compliance analyst.
  • At least one of the following security certifications including but not limited to: CAP, CGRC, CISSO, CISM, or CISSP. The Government will determine if other applicable certifications are acceptable upon contractor submittal.
  • Demonstrated knowledge and application of NIST Guidelines and FISMA Cybersecurity compliance requirements.
  • Demonstrated experience with all phases of the NIST Risk Management Framework (RMF)
  • Knowledge of and experience using relevant cybersecurity and analysis tools such as Archer, Nessus Security Center, Splunk, etc.
  • Experience communicating effectively, both oral and written, with technical, non-technical, and executive-level customers.
  • Ability to attain a DHS SECRET security clearance.

Desired Qualifications

  • In-depth knowledge of laws, directives, orders, etc., pertaining to IT security and directing Federal government agencies.
  • Technical background such as Network Engineering, Systems Administration, and Application Development. Hands on experience working with security tools like NESSUS, AppDetective, Web Inspect, AppScan, etc.
  • Strong written and oral communications skills
  • Ability to quickly adapt to customer, environment, policies, procedures, etc.
  • Proactive and self-directed workstyle
  • Ability to prioritize tasks in a fast-paced environment

About Us

EGlobalTech (EGT), a wholly owned subsidiary of Tetra Tech, provides the public sector with innovative solutions, leveraging cutting-edge tools and methodologies to meet the Government’s most pressing business needs. At the core of our business philosophy, technology opportunities are tightly woven with business goals to guide true transformations. EGT integrates cyber, technology, and business expertise to cross-pollinate, educate, and enhance awareness to better prepare for our customer’s challenges.

EGT’s innovative advantage is the horizontal R&D services of EGT Labs focused on high-value, repeatable solutions in Artificial Intelligence (AI), Robotic Process Automation (RPA), DevSecOps, and cloud transformation to solve customer challenges and they surface and advance program mission.

EGT’s cooperative community of experts makes our solutions adaptive, forward thinking, and teams able to provide end-to-end results. Our highly motivated employees thrive in a culture that encourages out-of-the-box thinking, collaboration, and an environment where you can excel. For more information, please visit our website at www.eglobaltech.com

Pay And Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here. https://www.eglobaltech.com/careers

Equal Employment Opportunity

As a condition of employment with EGlobalTech, any successful job applicant will be required to successfully complete a background investigation, which may also include a pre-employment drug screen and/or a credit check for positions in some areas of our business. EGlobalTech is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, gender, age, status as a protected veteran, sexual orientation, gender identity, or status as a qualified individual with a disability. EGlobalTech participates in the E-Verify program. EEO is the law.

Additional Information

  • Organization: 220 EGT

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