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Senior Information Security Professional; Government

Job in Reston, Fairfax County, Virginia, 22090, USA
Listing for: AT&T
Full Time position
Listed on 2026-09-24
Job specializations:
  • IT/Tech
    Cybersecurity, Information Security & Data Protection, IT Consultant
Salary/Wage Range or Industry Benchmark: 98100 - 205000 USD Yearly USD 98100.00 205000.00 YEAR
Job Description & How to Apply Below

This position requires office presence of a minimum of 5 days per week and is only located at customer's site.

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 a Senior Information Security Professional for the TAC2O systems in providing managed IT support of SAP-IT systems for high-priority defense intelligence collection needs and develop and field advanced technical collection capabilities.

Duties/Responsibilities
  • Responsibilities are full-time on customer's onsite and will cover classified programs and Special Access Programs (SAP). No Telework.
  • Provide subject matter expertise and serve as an advisor 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 (Con Mon), Plan of Actions and Milestones (POA&Ms), and other related Plans, Procedures and Guidance.
  • Monitoring and correlating data (e.g., logs, events, activity, etc.) from a variety of sources (e.g., Splunk, Trellix, STIGs, ACAS, etc.) to identify and mitigate threats, vulnerabilities and non-compliance.
  • Security sustainment activities (Change Management, Account Management, Media Protection, File Transfers, etc.)
  • Ensure required cybersecurity controls are implemented and validated, to include continuous monitoring actions.
  • Assist in overseeing and managing day-to-day operation of SAP Information Systems.
  • Assist team in 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 Clearance

TS/SCI with Poly (#tssci) (#polygraph)

Required Qualifications
  • Demonstrates strong experience with IC/DoD customer's Assessment and Authorization (A&A) process (e.g., RMF, NIST
    800-53, ICD
    503, JSIG)
  • Experience with XACTA
  • Experience in developing and implementing DoD approved information security controls, procedures and documentation for the operation of classified systems
  • 5 years of relevant experience
  • Must presently be 8570 compliant (IAT Level
    2)
Desired Qualifications
  • A Bachelor’s Degree from an accredited institute in an area applicable to this position and eight (8) years of relevant experience
  • Previous experience as an ISSO, ISSM, ISSE, or Security Controls Assessor
  • Experience with the Special Access Programs (SAPs) and Intelligence Community (IC)

Our Senior Information Security Professional's earn between $98,100 - $205,000. 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…
Position Requirements
10+ Years work experience
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