Information System Security Officer (Government)

AT&T; Chantilly (VA); On-site; USD 144,000 - 216,000; Full time

Benefits offered by this job

Medical/Dental/Vision coverage

401(k) plan

PTO and holidays

Paid parental leave

Tuition reimbursement

EAP and wellness programs

Employee discounts (AT&T plans and per

Job summary

AT&T Global Public Sector is seeking a Lead Technology Security professional to perform NIST RMF activities and manage security programs in a federal context from Chantilly, VA. This full-time onsite role requires a Public Trust clearance and CISSP certification.

You will drive authorization packages, risk-based remediation, and continuous monitoring using Xacta, Tenable, and ServiceNow, ensuring alignment with FEDRAMP, CMMC, and agency policy requirements.

Qualifications

• Bachelor's degree required; active CISSP certification.
• Experience translating security frameworks into technical controls.
• Strong knowledge of RMF, NIST, FEDRAMP and CMMC.

Responsibilities

• Lead RMF lifecycle activities, including system categorization, control selection and tailoring, implementation, assessment, authorization, continuous monitoring, and ongoing authorization, using Xacta.
• Translate requirements into actionable security control implementation plans, standards, and procedures.
• Develop and quality-assure authorization packages in Xacta with SSPs, SARs, control statements, and evidence.
• Plan and oversee security control assessments and verify remediation actions within Xacta.
• Lead POA&M governance using Xacta and ServiceNow to prioritize and track remediation within risk-based timelines.
• Establish continuous compliance and monitoring using SIEM, vulnerability data, and automated evidence.

Education

Bachelor's degree

CISSP

Tools

Xacta 360

Tenable Security Center

ServiceNow GRC

Identity and Access Management (IAM)

FEDRAMP

CMMC Certification Process

Job description

Role Overview

This is a full-time onsite role based in the location(s) posted and is performed from the designated work location five (5) days per week. No relocation is offered. AT&T will not hire any applicants for this position who require employer visa sponsorship now or in the future. 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. The AT&T Integrity, Compliance & Risk Management Team enables the company to bring secure, resilient, and authorization-ready services to the Public Sector market. Government cybersecurity authorizations are essential to offering and sustaining AT&T solutions for Federal Aviation Administration - Enterprise Network Services (FENS) program.

Job Responsibilities

• Lead NIST RMF lifecycle activities, including system categorization, control selection and tailoring, implementation, assessment, authorization, continuous monitoring, and ongoing authorization, using Xacta as the authoritative GRC and authorization-management platform.
• Translate FISMA, FEDRAMP, DoD RMF, CMMC, agency policy, and contractual requirements into actionable security control implementation plans, technical standards, security requirements, and operating procedures.
• Develop and quality-assure authorization packages in Xacta, including system security plans, security assessment reports, control implementation statements, privacy artifacts, contingency plans, risk assessments, and supporting evidence.
• Plan and oversee security control assessments, validate that controls operate as documented, identify implementation deficiencies, analyze root causes, and verify corrective actions and supporting evidence within Xacta.
• Lead POA&M governance using Xacta and ServiceNow, ensuring vulnerabilities and control deficiencies identified through assessments, audits, penetration testing, and continuous monitoring are prioritized, assigned, tracked, and remediated within risk-based timelines.
• Establish continuous-compliance and monitoring practices using automated control evidence, security configuration baselines, endpoint telemetry, SIEM capabilities, and vulnerability data from Tenable Security Center.
• Analyze and govern vulnerabilities identified through Tenable Security Center, validate findings, assess risk and asset criticality, coordinate remediation through ServiceNow, and maintain traceability to applicable controls and POA&M in Xacta.
• Perform security architecture and design reviews across identity, network, application, data, cloud, and operational security domains to identify control gaps and recommend risk-reduction measures.
• Assess the security impact of system changes, including new technologies, cloud services, APIs, data exchanges, integrations, boundary modifications, and changes to architecture, operations, or data flows.
• Apply Zero Trust and threat-informed risk principles, including strong identity, least privilege, device assurance, segmentation, continuous verification, policy-based access, and compensating controls.
• Integrate security governance into ServiceNow configuration, change, release, incident, and problem-management workflows, including security reviews for infrastructure-as-code and automated deployment pipelines, to prevent unauthorized or non-compliant changes.
• Communicate security posture and residual risk to system owners, authorizing officials, governance bodies, and executive stakeholders using risk indicators, compliance trends, vulnerability metrics, POA&M status, mitigation options, and decision-ready information derived from Xacta, Tenable Security Center, and ServiceNow.

Required Clearance, Qualifications & Desired Qualifications

• Required Clearance: Public Trust (#publictrust) (#clearable)
• Required Qualifications: Bachelor's degree Must have an active CISSP
• Desired Qualifications: CSM, Sec+ Advanced proficiency with Xacta 360 or comparable governance, risk, and compliance platforms. Hands-on experience with Tenable Security Center and enterprise vulnerability management practices. Working knowledge of the ServiceNow ecosystem, including GRC and vulnerability mgmt. Strong expertise in identity and access management. Experience with FEDRAMP and CMMC Certification Process and the deployment of certified cloud service offers

Benefits and Perks

• 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

Location, Salary & Working Hours

Weekly Hours: 40

Time Type: Regular

Location: Chantilly, Virginia

Salary Range: $143,800.00 - $215,800.00

Our Lead Technology Security jobs earn between $143,800.00 - $215,800.00 USD Annual. Individual starting salary within this range may depend on geography, experience, expertise, and education/training.

Equal Employment Opportunity Statement

AT&T and its subsidiaries are committed to equal employment opportunity. All hiring, promotion, and other employment decisions remain merit-based and free from discrimination on the basis of race, color, religion, religious creed, national origin, ancestry, age, sex, sexual orientation, gender, gender identity, gender expression, physical disability, mental disability, pregnancy, medical condition, genetic information, marital status, citizenship status, military status, veteran status, or any other characteristic protected by federal, state, or local laws.

In addition, AT&T will provide reasonable accommodations to qualified individuals with disabilities.

Company Culture

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. Not to mention all the other amazing rewards that working at AT&T offers. 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.