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Senior Information Systems Security Officer III (Government)

AT&T | Columbia, United States | Posted June 22, 2026

Position Overview

This position requires office presence of a minimum of 5 days per week and is only located at customer's site. No relocation is offered.

AT&T Global Public Sector is a trusted provider of secure, IP enabled, cloud-based, network solutions and professional services to the Federal Government. We are dedicated to recruiting, developing and empowering a diverse, high-performing workforce that is passionate about what they do, committed to our shared values and dedicated to our customers’ mission.

AT&T has an opening for an Information Systems Security Officer to support information assurance programs and ensure the security posture of mission critical systems. The ISSO will play a key role in supporting security authorization activities in alignment with program and government requirements.

**Job Duties/Responsibilities:**

+ Support the creation and continuous maintenance of the IT Systems Accreditation Documentation Packages (SSP, SCTM, CONOPs, A&A, T...

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