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AT&T
AT&T
H1B Visa SponsorTechnology & InnovationTelecommunications
AT&T is a telecommunications and technology company serving consumers, businesses, and public-sector organizations through wireless, internet, and fiber services. Its work spans network innovation, including collaborations focused on Open RAN, as well as FirstNet public-safety connectivity, disaster recovery, consumer devices, and data privacy. The company also emphasizes sustainability, cultural inclusion, corporate responsibility, and public policy. With a large workforce and a long operating history, AT&T offers career opportunities connected to communications infrastructure, digital technology, customer services, and responsible innovation.
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Principal Advanced Network Technical Support | AT&T | Richardson, TX

Lead enterprise network support for AT&T’s SD-WAN, routing, and security operations. Own critical incidents, technology integration, automation, and cross-functional network initiatives.

USUnited StatesTXTexas
$143,800 – $215,800 / year
On-siteFull-timeLeadEnglish RequiredSupport Engineer
CloudDNSFirewallsSwitchingVMware

Description

  • Lead technical expertise and subject-matter support for the Service Assurance Tier 3 team.
  • Provide specialized support for D2 technologies, including Silver Peak, VMware/Broadcom/Arista, Cisco SD-WAN, Flexware, and Universal CPE.
  • Serve as the routing and connectivity subject-matter expert across supported service lines.
  • Oversee critical customer network outages, triage incidents, identify root causes, and reduce service impact.
  • Convert technical findings into clear updates for internal engineering teams and customers.
  • Mentor GT3 peers, Service Assurance teams, and LCM/LE resources.
  • Create and deliver training content and documentation for GCSC and GT3 teams.
  • Own complex, long-running issues and technical escalations.
  • Direct projects through completion, managing scope, timelines, resources, risks, quality, and stakeholder communications.
  • Introduce and support new technology platforms through development, testing, training, and methods-and-procedures creation.
  • Partner with CTO teams in Agile and DevOps environments and approve CTO designs.
  • Resolve complex network problems, lead outage recovery and root-cause analysis, and advance problem-management efforts.
  • Build custom tools, network-performance metrics, and automation solutions.
  • Lead high-impact initiatives and develop and implement innovative business strategies.
  • Advise senior leaders, shape executive decisions, mentor colleagues, and operate with limited supervision.
  • Coordinate cross-functional technology insertion and root-cause analysis, oversee vendors, and maintain network health through advanced analytics.

Requirements

  • Expert-level experience with enterprise networking, SD-WAN, network security, and advanced troubleshooting in large-scale, mission-critical environments.
  • Advanced command of enterprise routing, switching, and network architecture design.
  • Expert troubleshooting and root-cause analysis across complex WAN, LAN, wireless, security, cloud, and SD-WAN environments.
  • Extensive experience with Cisco routing and switching, Cisco Nexus data-center switching, Cisco wireless infrastructure, Cisco ASA firewalls, Juniper routing and switching, Riverbed WAN optimization, Aruba EdgeConnect (Silver Peak) SD-WAN, and VMware VeloCloud SD-WAN.
  • Knowledge of BGP, OSPF, and EIGRP.
  • Experience designing, implementing, and troubleshooting IPSec VPNs.
  • Experience with LAN/WAN connectivity and optimization.
  • Knowledge of network segmentation, redundancy, and high-availability architectures.
  • Experience with performance monitoring, capacity planning, and proactive network optimization.
  • Deep knowledge of enterprise security architectures and best practices.
  • Experience implementing and supporting NGFW, Zero Trust Network Architecture, SASE, NAC, IDS/IPS, DNS security, DDoS protection, MFA, PKI, secure remote access, cloud security controls, and SIEM platforms.
  • Hands-on experience with Cisco ASA and Firepower, Palo Alto Networks firewalls, and Cisco ISE.
  • Experience supporting NIST, CIS Controls, FedRAMP, FISMA, and DoD security requirements.
  • Strong understanding of WAN transport, including MPLS, DIA, broadband, Ethernet, fiber, LTE/5G wireless, satellite communications, and private or hybrid networks.
  • Eligibility to obtain and maintain a U.S. government security clearance.
  • Experience supporting federal government, defense, intelligence community, or highly regulated environments is strongly preferred.
  • Demonstrated ability to lead complex network incidents, escalations, and service-restoration efforts.
  • Experience supporting geographically distributed enterprise and government environments.
  • Strong analytical, documentation, communication, and customer-facing abilities.
  • Proven capability to lead and mentor network engineering and operations teams.
  • Experience working in Agile and DevOps environments.
  • Experience with software-defined networking, virtualization, containerization, CI/CD automation pipelines, custom tool development, and advanced data analytics.
  • Bachelor’s degree (BS/BA) desired.
  • Seven or more years of related experience.
  • Certification is required in some areas.

Benefits

  • Medical, dental, and vision coverage
  • 401(k) plan
  • Tuition reimbursement program
  • Paid time off and holidays, including at least 23 vacation days annually and nine company-designated holidays
  • Paid parental leave
  • Paid caregiver leave
  • Additional sick leave beyond state and local legal requirements may be available but is unprotected
  • Adoption reimbursement
  • Short- and long-term disability benefits
  • Life and accidental death insurance
  • Supplemental critical illness, accident, hospital indemnity, and group legal programs
  • Employee Assistance Programs (EAP)
  • Extensive employee wellness programs
  • Discounts of up to 50% on eligible AT&T mobility plans and accessories, AT&T internet and available fiber service, and AT&T phones

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