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Senior Information Systems Security Officer III (Government)

att
Columbia, MD Full Time
POSTED ON 5/20/2026
AVAILABLE BEFORE 7/21/2026
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, Test Plan, SOP's. User Guides etc). Provide IA security on-site support for all formal IT systems and A&A testing. Ensure all on-site contract IT systems personnel are trained on all IA procedures and requirements for each of the IT systems. Provide IA Security qualified personnel resources to support the continued accreditation and security operation of the information system under the RMF Continuous Monitoring Plan. Review all hardware and software changes proposed and/or being implemented for appropriate security operation, providing configuration management support as it relates to the security configuration of the system, updating documentation and hardware and software inventory lists. Propose IA policy, procedures, provide IT security training, and perform IA oversight. Required Clearance: TS/SCI (#tssci) Required Qualifications: Bachelors degree in relevant field of study, 8 years of relevant experience Our Senior Information Systems Security Officer III's earn between $118,700 - $276,600. Not to mention all the other amazing rewards that working at AT&T offers. Individual starting salary within this range may depend on geography, experience, expertise, and education/training. Joining our team comes with amazing perks and benefits: Medical/Dental/Vision coverage 401(k) plan Tuition reimbursement program Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays) Paid Parental Leave Paid Caregiver Leave Additional sick leave beyond what state and local law require may be available but is unprotected Adoption Reimbursement Disability Benefits (short term and long term) Life and Accidental Death Insurance Supplemental benefit programs: critical illness/accident hospital indemnity/group legal Employee Assistance Programs (EAP) Extensive employee wellness programs Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T phone Weekly Hours: 40 Time Type: Regular Location: Columbia, Maryland It is the policy of AT&T to provide equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, AT&T will provide reasonable accommodations for qualified individuals with disabilities. AT&T is a fair chance employer and does not initiate a background check until an offer is made. We are pioneers of making connections and have been ever since Alexander Graham Bell invented the telephone and founded our company. That was nearly 150 years ago, and we haven’t stopped innovating since. At our core, we help bring families, communities, and businesses together with the products and services they need to thrive every day. From the widespread and growing availability of 5G and Fiber to working on things we once only dreamed of—at AT&T, we create connections that change the world.

Salary : $118,700 - $276,600

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