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AT

AT&T

via Workday

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Information Systems Security Officer (ISSO III) (Government)

Columbia, Maryland
Full-time
Posted 1/8/2026
Direct Apply
Key Skills:
Cybersecurity
Security Policies and Procedures
Network Administration

Compensation

Salary Range

$108K - 220K a year

Responsibilities

Support and manage IT security programs, policies, and compliance for government systems, including security assessments, documentation, and team leadership.

Requirements

Extensive experience in IT security, system administration, or related fields, with security clearance and certifications like DoD 8570 IAM Level I or higher.

Full Description

Job Description: 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. Intelink Services provide interagency information sharing, content discovery, and collaboration capabilities on the IC system domains to the IC and its partners in Defense, Homeland Security, Foreign Affairs, and Law Enforcement. AT&T has an opening for an Information Systems Security Officer: To support Public Sector Solutions. This position requires office presence a minimum of 5 days per week and is only located in the location(s) posted. No relocation is offered. Work to be performed in Laurel, MD. Description of Job Duties/Responsibilities: Work with the IA team to plan and coordinate the IT security programs and policies. Coordinate with system developers, administrators, and owners on security changes. Manage and control changes to the system and assess the security impact of those changes. Perform security continuous monitoring and reporting for the systems supported on the contract. Prepare and maintain the Security documentation, such as SSPs, for the systems supported on the contract in accordance with IC and Agency policies. Serve as the initial security Approval Authority for the systems supported on the contract. Utilize COTS/GOTS to communicate system status and compliance to management and shareholders. Support AO/DAO, SCA, and ISSM on system Assessment and Authorization (A&A) duties to obtain and maintain ATOs for the systems supported on the contract. Conduct daily review of and respond to security related tickets. Perform the role of ISSO team lead; provide guidance and direction to more junior members of the IA team. Windows or Linux SA experience. Network Admin experience. AWS experience. Experience with an audit reduction and tool such as Splunk. Experience with a vulnerability scanner such as Nessus. Experience with Xacta, LatteArt. Familiarity with IC, DoD, and NIST Security Policies and Procedures. Required Clearance TS/SCI FS Additional Clearance Requirements: Enter additional requirements Required Qualifications: High School Diploma with 15 years of work experience in any combination of: System Administrator (SA), Information System Security Officer (ISSO), Information System Security Engineer (ISSE), Information Technology (IT) Service Desk, Computer Network Defense (CND) Analyst, Telecommunication Technician, and Network Administration. DoD 8570 compliance with Information Assurance Management (IAM) Level I or higher is required/ OR Bachelor of Science Degree in Information Technology Discipline with 4 years of work experience in any combination of: System Administrator (SA), Information System Security Officer (ISSO), Information System Security Engineer (ISSE), Information Technology (IT) Service Desk, Computer Network Defense (CND) Analyst, Telecommunication Technician, and Network Administration. DoD 8570 compliance with Information Assurance Management (IAM) Level I or higher is required. OR Masters Degree in Information Technology Discipline with 2 years of work experience in any combination of: System Administrator (SA), Information System Security Officer (ISSO), Information System Security Engineer (ISSE), Information Technology (IT) Service Desk, Computer Network Defense (CND) Analyst, Telecommunication Technician, and Network Administration. DoD 8570 compliance with Information Assurance Management (IAM) Level I or higher is required. Ready to join our team? Apply today! Our Information Systems Security Officer (ISSO III) (Government) earns between $108,000 - $219,750 yearly. 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) *Pro-rated when working less than 40 hrs/wk. 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.

This job posting was last updated on 1/12/2026

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