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Senior Security Engineer (Government)

AT&T

Engineering Jobs

Senior Security Engineer (Government)

full-timePosted: Nov 5, 2025

Job 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.

AT&T maintains active contracts and relationships with U.S. Government entities that require secure communications and systems. The operational need to add members to our support staff will continue to enable robust solutions in the IT Service and Support framework. The position supports both the active contracts as well as new contract support requests in facilitation of business capture, operations, and new technology insertion. Close relationship building with the customers ensures operational readiness and compliance.

Seeking an experienced IT Security Engineer to join our team. This is a hands-on role requiring a seasoned professional with a comprehensive mix of Security / IT background to support our systems including networking, computer/virtual infrastructure operations, threat detection software and systems, threat analysis and action of supported systems, and new technology integration with built in security engineering included. The team also handles day-to-day security compliance and user administration. The successful candidate will become a viable member leading in the integration, configuration, deployment, security remediation, and operations. 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.

Description of Job Duties/Responsibilities:

  • Expertise in Linux-based operating systems: Red Hat, CentOS, VMware, KVM, QEMU KVM.
  • Windows operating system environment support (Servers/Workstations – standalone and Full enterprise deployments).
  • Multi-platform support of OEM appliances, Windows and Linux VMware based appliances (End user/Virtual Infrastructure).
  • Mentoring junior and mid-level staff in best practices for installation and operations of security products/practices.
  • Ability to install and operate Trellix, SentinalOne, Splunk and other related security and analysis systems.
  • Patching and remediation of monitored systems and networks with the team.
  • Tier 3+ service support, interfacing with Tier 2.
  • IT service delivery, assurance, and operations to include be not limited to documentation: OPS, SECOPS, Systems.
  • Assist in developing new shared services (product deployments, customized solutions – Internal/External as needed).
  • Providing technical implementation support for security compliance and system accreditation processes.

Required Clearance: TS/SCI with the ability to obtain/maintain a polygraph. (#ts/sci) (#polygraph)

Required Qualifications:

  • Must be a US Citizen.
  • Bachelor's degree and minimum 5 years of relevant experience in Security operations of systems supporting: Virtualization, Windows and Linux Computing solution engineering and architecture solutions
  • Experience with on-premise, cloud and hybrid-cloud based deployments.
  • US citizenship is required; Active federal security clearance.
  • Strong written and verbal communication skills.
  • Demonstrated leader with team-oriented interpersonal skills; ability to effectively interface with a broad range of people and roles.

Desired Qualifications:

  • Active Cleared Individual clearance supporting the overall business up to TS/SCI with polygraph.
  • CISSP, Virtual Certifications key (DoDD 8570/ DoDD 8140).
  • Experience with ITSM and/or ServiceNow.
  • Comparable VMware certifications, RHCE, MS Certifications, Security Certs in general to IAT/IAM levels 1-3.
  • Working knowledge of common operating systems (Windows, Linux, etc.) and basic endpoint security principles.
  • Extensive experience in security operations and supported systems named/unnamed within the posting.

Ready to join our team? Apply today!

Our Senior Security Engineer (Government) earns between $98,100 - $220,000 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:

Chantilly, Virginia

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.

Locations

  • Chantilly, Virginia, United States

Salary

98,100 - 220,000 USD / yearly

Estimated Salary Rangemedium confidence

140,000 - 220,000 USD / yearly

Source: ai estimated

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Linux-based operating systems: Red Hat, CentOS, VMware, KVM, QEMU KVMintermediate
  • Windows operating system environment supportintermediate
  • Multi-platform support of OEM appliancesintermediate
  • Trellix, SentinalOne, Splunkintermediate
  • Patching and remediationintermediate
  • Tier 3+ service supportintermediate
  • IT service delivery, assurance, and operationsintermediate
  • Documentation: OPS, SECOPS, Systemsintermediate
  • Security compliance and system accreditationintermediate
  • Virtualization, Windows and Linux Computing solution engineering and architectureintermediate
  • On-premise, cloud and hybrid-cloud based deploymentsintermediate
  • Strong written and verbal communication skillsintermediate
  • Team-oriented interpersonal skillsintermediate

Required Qualifications

  • Must be a US Citizen (experience)
  • Bachelor's degree and minimum 5 years of relevant experience in Security operations of systems supporting: Virtualization, Windows and Linux Computing solution engineering and architecture solutions (experience)
  • Experience with on-premise, cloud and hybrid-cloud based deployments (experience)
  • US citizenship is required; Active federal security clearance (experience)
  • Strong written and verbal communication skills (experience)
  • Demonstrated leader with team-oriented interpersonal skills; ability to effectively interface with a broad range of people and roles (experience)

Preferred Qualifications

  • Active Cleared Individual clearance supporting the overall business up to TS/SCI with polygraph (experience)
  • CISSP, Virtual Certifications key (DoDD 8570/ DoDD 8140) (experience)
  • Experience with ITSM and/or ServiceNow (experience)
  • Comparable VMware certifications, RHCE, MS Certifications, Security Certs in general to IAT/IAM levels 1-3 (experience)
  • Working knowledge of common operating systems (Windows, Linux, etc.) and basic endpoint security principles (experience)
  • Extensive experience in security operations and supported systems named/unnamed within the posting (experience)

Responsibilities

  • Expertise in Linux-based operating systems: Red Hat, CentOS, VMware, KVM, QEMU KVM
  • Windows operating system environment support (Servers/Workstations – standalone and Full enterprise deployments)
  • Multi-platform support of OEM appliances, Windows and Linux VMware based appliances (End user/Virtual Infrastructure)
  • Mentoring junior and mid-level staff in best practices for installation and operations of security products/practices
  • Ability to install and operate Trellix, SentinalOne, Splunk and other related security and analysis systems
  • Patching and remediation of monitored systems and networks with the team
  • Tier 3+ service support, interfacing with Tier 2
  • IT service delivery, assurance, and operations to include be not limited to documentation: OPS, SECOPS, Systems
  • Assist in developing new shared services (product deployments, customized solutions – Internal/External as needed)
  • Providing technical implementation support for security compliance and system accreditation processes

Benefits

  • general: Medical/Dental/Vision coverage
  • general: 401(k) plan
  • general: Tuition reimbursement program
  • general: 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
  • general: Paid Parental Leave
  • general: Paid Caregiver Leave
  • general: Additional sick leave beyond what state and local law require may be available but is unprotected
  • general: Adoption Reimbursement
  • general: Disability Benefits (short term and long term)
  • general: Life and Accidental Death Insurance
  • general: Supplemental benefit programs: critical illness/accident hospital indemnity/group legal
  • general: Employee Assistance Programs (EAP)
  • general: Extensive employee wellness programs
  • general: 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

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AT&T logo

Senior Security Engineer (Government)

AT&T

Engineering Jobs

Senior Security Engineer (Government)

full-timePosted: Nov 5, 2025

Job 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.

AT&T maintains active contracts and relationships with U.S. Government entities that require secure communications and systems. The operational need to add members to our support staff will continue to enable robust solutions in the IT Service and Support framework. The position supports both the active contracts as well as new contract support requests in facilitation of business capture, operations, and new technology insertion. Close relationship building with the customers ensures operational readiness and compliance.

Seeking an experienced IT Security Engineer to join our team. This is a hands-on role requiring a seasoned professional with a comprehensive mix of Security / IT background to support our systems including networking, computer/virtual infrastructure operations, threat detection software and systems, threat analysis and action of supported systems, and new technology integration with built in security engineering included. The team also handles day-to-day security compliance and user administration. The successful candidate will become a viable member leading in the integration, configuration, deployment, security remediation, and operations. 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.

Description of Job Duties/Responsibilities:

  • Expertise in Linux-based operating systems: Red Hat, CentOS, VMware, KVM, QEMU KVM.
  • Windows operating system environment support (Servers/Workstations – standalone and Full enterprise deployments).
  • Multi-platform support of OEM appliances, Windows and Linux VMware based appliances (End user/Virtual Infrastructure).
  • Mentoring junior and mid-level staff in best practices for installation and operations of security products/practices.
  • Ability to install and operate Trellix, SentinalOne, Splunk and other related security and analysis systems.
  • Patching and remediation of monitored systems and networks with the team.
  • Tier 3+ service support, interfacing with Tier 2.
  • IT service delivery, assurance, and operations to include be not limited to documentation: OPS, SECOPS, Systems.
  • Assist in developing new shared services (product deployments, customized solutions – Internal/External as needed).
  • Providing technical implementation support for security compliance and system accreditation processes.

Required Clearance: TS/SCI with the ability to obtain/maintain a polygraph. (#ts/sci) (#polygraph)

Required Qualifications:

  • Must be a US Citizen.
  • Bachelor's degree and minimum 5 years of relevant experience in Security operations of systems supporting: Virtualization, Windows and Linux Computing solution engineering and architecture solutions
  • Experience with on-premise, cloud and hybrid-cloud based deployments.
  • US citizenship is required; Active federal security clearance.
  • Strong written and verbal communication skills.
  • Demonstrated leader with team-oriented interpersonal skills; ability to effectively interface with a broad range of people and roles.

Desired Qualifications:

  • Active Cleared Individual clearance supporting the overall business up to TS/SCI with polygraph.
  • CISSP, Virtual Certifications key (DoDD 8570/ DoDD 8140).
  • Experience with ITSM and/or ServiceNow.
  • Comparable VMware certifications, RHCE, MS Certifications, Security Certs in general to IAT/IAM levels 1-3.
  • Working knowledge of common operating systems (Windows, Linux, etc.) and basic endpoint security principles.
  • Extensive experience in security operations and supported systems named/unnamed within the posting.

Ready to join our team? Apply today!

Our Senior Security Engineer (Government) earns between $98,100 - $220,000 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:

Chantilly, Virginia

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.

Locations

  • Chantilly, Virginia, United States

Salary

98,100 - 220,000 USD / yearly

Estimated Salary Rangemedium confidence

140,000 - 220,000 USD / yearly

Source: ai estimated

* This is an estimated range based on market data and may vary based on experience and qualifications.

Skills Required

  • Linux-based operating systems: Red Hat, CentOS, VMware, KVM, QEMU KVMintermediate
  • Windows operating system environment supportintermediate
  • Multi-platform support of OEM appliancesintermediate
  • Trellix, SentinalOne, Splunkintermediate
  • Patching and remediationintermediate
  • Tier 3+ service supportintermediate
  • IT service delivery, assurance, and operationsintermediate
  • Documentation: OPS, SECOPS, Systemsintermediate
  • Security compliance and system accreditationintermediate
  • Virtualization, Windows and Linux Computing solution engineering and architectureintermediate
  • On-premise, cloud and hybrid-cloud based deploymentsintermediate
  • Strong written and verbal communication skillsintermediate
  • Team-oriented interpersonal skillsintermediate

Required Qualifications

  • Must be a US Citizen (experience)
  • Bachelor's degree and minimum 5 years of relevant experience in Security operations of systems supporting: Virtualization, Windows and Linux Computing solution engineering and architecture solutions (experience)
  • Experience with on-premise, cloud and hybrid-cloud based deployments (experience)
  • US citizenship is required; Active federal security clearance (experience)
  • Strong written and verbal communication skills (experience)
  • Demonstrated leader with team-oriented interpersonal skills; ability to effectively interface with a broad range of people and roles (experience)

Preferred Qualifications

  • Active Cleared Individual clearance supporting the overall business up to TS/SCI with polygraph (experience)
  • CISSP, Virtual Certifications key (DoDD 8570/ DoDD 8140) (experience)
  • Experience with ITSM and/or ServiceNow (experience)
  • Comparable VMware certifications, RHCE, MS Certifications, Security Certs in general to IAT/IAM levels 1-3 (experience)
  • Working knowledge of common operating systems (Windows, Linux, etc.) and basic endpoint security principles (experience)
  • Extensive experience in security operations and supported systems named/unnamed within the posting (experience)

Responsibilities

  • Expertise in Linux-based operating systems: Red Hat, CentOS, VMware, KVM, QEMU KVM
  • Windows operating system environment support (Servers/Workstations – standalone and Full enterprise deployments)
  • Multi-platform support of OEM appliances, Windows and Linux VMware based appliances (End user/Virtual Infrastructure)
  • Mentoring junior and mid-level staff in best practices for installation and operations of security products/practices
  • Ability to install and operate Trellix, SentinalOne, Splunk and other related security and analysis systems
  • Patching and remediation of monitored systems and networks with the team
  • Tier 3+ service support, interfacing with Tier 2
  • IT service delivery, assurance, and operations to include be not limited to documentation: OPS, SECOPS, Systems
  • Assist in developing new shared services (product deployments, customized solutions – Internal/External as needed)
  • Providing technical implementation support for security compliance and system accreditation processes

Benefits

  • general: Medical/Dental/Vision coverage
  • general: 401(k) plan
  • general: Tuition reimbursement program
  • general: 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
  • general: Paid Parental Leave
  • general: Paid Caregiver Leave
  • general: Additional sick leave beyond what state and local law require may be available but is unprotected
  • general: Adoption Reimbursement
  • general: Disability Benefits (short term and long term)
  • general: Life and Accidental Death Insurance
  • general: Supplemental benefit programs: critical illness/accident hospital indemnity/group legal
  • general: Employee Assistance Programs (EAP)
  • general: Extensive employee wellness programs
  • general: 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

Target Your Resume for "Senior Security Engineer (Government)" , AT&T

Get personalized recommendations to optimize your resume specifically for Senior Security Engineer (Government). Takes only 15 seconds!

AI-powered keyword optimization
Skills matching & gap analysis
Experience alignment suggestions

Check Your ATS Score for "Senior Security Engineer (Government)" , AT&T

Find out how well your resume matches this job's requirements. Get comprehensive analysis including ATS compatibility, keyword matching, skill gaps, and personalized recommendations.

ATS compatibility check
Keyword optimization analysis
Skill matching & gap identification
Format & readability score

Tags & Categories

TelecommunicationsTelecommunications

Answer 10 quick questions to check your fit for Senior Security Engineer (Government) @ AT&T.

Quiz Challenge
10 Questions
~2 Minutes
Instant Score

Related Books and Jobs

No related jobs found at the moment.