Senior Information Security Professional (Government)

AT&T Global Public Sector is a trusted provider of secure, IP‑enabled, cloud‑based network solutions and professional services to the Federal Government. The company is seeking a Senior Information Security Professional to provide managed IT support for TAC2O systems, supporting high‑priority defense intelligence collection needs and developing advanced technical collection capabilities.

Responsibilities

• Full‑time onsite work covering classified programs and Special Access Programs (SAP); no telework.
• Provide subject‑matter expertise and advise on technical matters involving the security of assigned Information Systems.
• Maintain and develop System Security Plans (SSP), Security Controls Traceability Matrices (SCTM), Continuous Monitoring Plans (ConMon), Plan of Actions and Milestones (POA&Ms), and related plans, procedures, and guidance.
• Monitor and correlate data (logs, events, activity, etc.) from sources such as Splunk, Trellix, STIGs, ACAS, etc., to identify and mitigate threats, vulnerabilities, and non‑compliance.
• Perform security sustainment activities including change management, account management, media protection, and file transfers.
• Ensure required cybersecurity controls are implemented and validated, including continuous monitoring actions.
• Assist in overseeing and managing day‑to‑day operation of SAP Information Systems.
• Support the Authorization and Accreditation (A&A) process using RMF across the design lifecycle for classified systems, obtaining and maintaining Authority to Operate (ATO) and Authority to Connect (ATC).
• Demonstrate a strong understanding of networks, cloud, and IT system security authorization procedures.

Required Qualifications

• TS/SCI clearance with polygraph.
• Strong experience with IC/DoD customer Assessment and Authorization (A&A) processes (e.g., RMF, NIST 800‑53, ICD 503, JSIG).
• Experience with XACTA.
• Experience developing and implementing DoD‑approved information security controls, procedures, and documentation for classified systems.
• Minimum five (5) years of relevant experience.
• Current 8570 compliance (IAT Level 2).

Desired Qualifications

• Bachelor’s degree from an accredited institution in a relevant field and eight (8) years of relevant experience.
• Previous experience as an ISSO, ISSM, ISSE, or Security Controls Assessor.
• Experience with Special Access Programs (SAPs) and the Intelligence Community (IC).

Pay

Senior Information Security Professionals earn between $98,100 – $205,000. Individual starting salary within this range may depend on geography, experience, expertise, and education/training.

Benefits

• Medical, dental, and vision coverage
• 401(k) plan
• Tuition reimbursement program
• Paid Time Off and holidays (at least 23 days vacation per year and 9 company‑designated holidays)
• Paid parental leave
• Paid caregiver leave
• Additional unprotected sick leave beyond state and local requirements
• Adoption reimbursement
• Short‑term and long‑term disability benefits
• 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 % on eligible AT&T mobility plans and accessories, AT&T internet (including fiber where available), and AT&T wireline phone

Schedule

• Weekly Hours: 40
• Time Type: Regular
• Location: Reston, Virginia (customer’s site)
• Minimum office presence: 5 days per week; no telework permitted