AT&T
Principal Cybersecurity Network Engineer - Critical Infrastructure
AT&T, Dallas, Texas, United States, 75215
Overview
Principal Cybersecurity Network Engineer - Critical Infrastructure at AT&T. This position requires office presence of a minimum of 5 days per week and is located in the posted location(s). No relocation offered. Join AT&T and reimagine the communications and technologies that connect the world. Our Chief Security Office ensures that our assets are safeguarded through truthful transparency, enforces accountability and masters cybersecurity to stay ahead of threats. When you step into a career with AT&T, you won’t just imagine the future—you’ll create it.
Role Join our company as a Principal Network Security Engineer and lead offensive security initiatives that rigorously test and improve the resilience of our core telecom network and infrastructure. You will be at the forefront of simulating advanced adversaries, identifying critical vulnerabilities, and influencing security strategies to defend one of the world’s largest telecommunications networks.
Key Responsibilities
Perform penetration testing and pressure testing on pre-production network infrastructure and document remediation required for production deployment
Research adversarial tactics, techniques and procedures relevant to critical infrastructure in use or in consideration for use
Lead and design adversary simulation exercises and targeted penetration testing to certify pre-production network infrastructure across multi-vendor network environments and telecom critical infrastructure
Identify, exploit, and weaponize network vulnerabilities such as BGP hijacking, ACL bypasses, segmentation flaws, and misconfigurations in routers, firewalls, and network segmentation for pre-production environments
Leverage Python scripting to automate ongoing security testing on various network elements
Mentor and develop offensive security mindsets with the current Network Security Blue Team members
Collaborate closely with blue teams, SOC, and incident response teams to provide actionable intelligence, improve detection capabilities, and refine defense mechanisms
Engage with internal stakeholders and executive leadership to communicate findings, risks, and strategic recommendations based on Network Element vulnerability assessments
Qualifications Education:
Bachelor’s degree or higher in Computer Science, Cybersecurity, Information Technology, Engineering, or related field. Advanced degrees or certifications such as OSCP, OSCE, GIAC GPEN, or similar are highly desirable.
Experience:
8+ years of network security experience and 3+ years of offensive security and penetration testing within large-scale ISP, telecom, or enterprise environments.
Extensive hands-on expertise exploiting network infrastructure vulnerabilities, including routing protocols (BGP, OSPF, MPLS), network device firmware, and network security controls.
Knowledge of and continued research of the most significant Advanced Persistent Threats (APTs) for telecom’s critical infrastructure
Hands-on experience with various offensive security tools as well as network traffic analysis
Strong Linux proficiency for offensive security operations
Experience with automating API calls for security data collection and automation
Familiarity with scripting and automation using Python
Proven ability to conduct threat modeling and emulate advanced threat actor tactics, techniques, and procedures (TTPs)
Experience collaborating with blue teams and SOCs to improve detection, response, and mitigation strategies
Extensive experience with multi-vendor network platforms from an offensive security perspective, including Cisco, Juniper, Arista, Palo Alto, Fortinet, and UfiSpace
Desired Skills & Attributes:
Exceptional adversarial mindset with creativity and persistence to uncover complex security weaknesses
Strategic thinker who can align offensive security efforts with organizational risk management and business goals
Ability to manage multiple complex engagements simultaneously while maintaining meticulous attention to detail
Collaborative leader who fosters knowledge sharing and continuous improvement within teams
Strong ethical standards and commitment to responsible disclosure and security best practices
Benefits & Compensation AT&T compensation for this role ranges from $141,300 to $211,900 USD annual, with additional rewards and benefits. Salary may depend on geography, experience, expertise, and education/training. Joining our team comes with a comprehensive benefits package including medical/dental/vision, 401(k), tuition reimbursement, paid time off and holidays, parental and caregiver leave, disability benefits, life and accidental death insurance, supplemental programs, EAP, wellness programs, and employee discounts on AT&T services.
Additional Details Full-time office role. Weekly hours: 40. Location: USA: NC: Charlotte / Research Dr - Co: 9139 Research Dr @ (co). Time Type: Regular. Seniority level: Not Applicable. Employment type: Full-time. Job function: Information Technology. Industries include Wireless Services, IT Services and IT Consulting, and Telecommunications.
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Role Join our company as a Principal Network Security Engineer and lead offensive security initiatives that rigorously test and improve the resilience of our core telecom network and infrastructure. You will be at the forefront of simulating advanced adversaries, identifying critical vulnerabilities, and influencing security strategies to defend one of the world’s largest telecommunications networks.
Key Responsibilities
Perform penetration testing and pressure testing on pre-production network infrastructure and document remediation required for production deployment
Research adversarial tactics, techniques and procedures relevant to critical infrastructure in use or in consideration for use
Lead and design adversary simulation exercises and targeted penetration testing to certify pre-production network infrastructure across multi-vendor network environments and telecom critical infrastructure
Identify, exploit, and weaponize network vulnerabilities such as BGP hijacking, ACL bypasses, segmentation flaws, and misconfigurations in routers, firewalls, and network segmentation for pre-production environments
Leverage Python scripting to automate ongoing security testing on various network elements
Mentor and develop offensive security mindsets with the current Network Security Blue Team members
Collaborate closely with blue teams, SOC, and incident response teams to provide actionable intelligence, improve detection capabilities, and refine defense mechanisms
Engage with internal stakeholders and executive leadership to communicate findings, risks, and strategic recommendations based on Network Element vulnerability assessments
Qualifications Education:
Bachelor’s degree or higher in Computer Science, Cybersecurity, Information Technology, Engineering, or related field. Advanced degrees or certifications such as OSCP, OSCE, GIAC GPEN, or similar are highly desirable.
Experience:
8+ years of network security experience and 3+ years of offensive security and penetration testing within large-scale ISP, telecom, or enterprise environments.
Extensive hands-on expertise exploiting network infrastructure vulnerabilities, including routing protocols (BGP, OSPF, MPLS), network device firmware, and network security controls.
Knowledge of and continued research of the most significant Advanced Persistent Threats (APTs) for telecom’s critical infrastructure
Hands-on experience with various offensive security tools as well as network traffic analysis
Strong Linux proficiency for offensive security operations
Experience with automating API calls for security data collection and automation
Familiarity with scripting and automation using Python
Proven ability to conduct threat modeling and emulate advanced threat actor tactics, techniques, and procedures (TTPs)
Experience collaborating with blue teams and SOCs to improve detection, response, and mitigation strategies
Extensive experience with multi-vendor network platforms from an offensive security perspective, including Cisco, Juniper, Arista, Palo Alto, Fortinet, and UfiSpace
Desired Skills & Attributes:
Exceptional adversarial mindset with creativity and persistence to uncover complex security weaknesses
Strategic thinker who can align offensive security efforts with organizational risk management and business goals
Ability to manage multiple complex engagements simultaneously while maintaining meticulous attention to detail
Collaborative leader who fosters knowledge sharing and continuous improvement within teams
Strong ethical standards and commitment to responsible disclosure and security best practices
Benefits & Compensation AT&T compensation for this role ranges from $141,300 to $211,900 USD annual, with additional rewards and benefits. Salary may depend on geography, experience, expertise, and education/training. Joining our team comes with a comprehensive benefits package including medical/dental/vision, 401(k), tuition reimbursement, paid time off and holidays, parental and caregiver leave, disability benefits, life and accidental death insurance, supplemental programs, EAP, wellness programs, and employee discounts on AT&T services.
Additional Details Full-time office role. Weekly hours: 40. Location: USA: NC: Charlotte / Research Dr - Co: 9139 Research Dr @ (co). Time Type: Regular. Seniority level: Not Applicable. Employment type: Full-time. Job function: Information Technology. Industries include Wireless Services, IT Services and IT Consulting, and Telecommunications.
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