Principal Adv Network Tech Support

Cricket Wireless LLC.; Richardson (TX); On-site; USD 144,000 - 216,000; Full time

Benefits offered by this job

Medical/Dental/Vision coverage

401(k) plan

Paid Time Off

Job summary

AT&T, located in Richardson, Texas, seeks a Principal Advanced Network Tech Support expert for GT3. You will lead complex outages, mentor peers, and drive problem management for SD-WAN and security-focused environments. This role emphasizes clear communication with internal engineers and customers.

The ideal candidate has extensive routing, switching, and security experience across WAN/LAN, with certifications and a readiness to support government-grade networks. On-site presence is required.

Qualifications

• Bachelor’s degree or equivalent in a related field.
• 7+ years of related enterprise networking experience.
• Expertise with SD-WAN and large-scale WAN/LAN environments.
• Strong communication and mentoring abilities.

Responsibilities

• Lead complex network incidents and restorations.
• Mentor GT3 peers and other teams.
• Perform root-cause analysis and drive problem management.
• Develop and share troubleshooting best practices.
• Collaborate with CTO partners and cross-functional teams.

Skills

Enterprise networking

SD-WAN tech

Routing & switching

Network security

Cisco/Nexus

VeloCloud

Zscaler/Prisma

NGFW

DevOps collaboration

Education

Bachelor’s degree (BS/BA) desired

Tools

Cisco ASA/Firepower

Palo Alto Firewalls

Cisco ISE

Fortinet FortiOS

Zscaler/Prisma Access

Job description

This position requires office presence of a minimum of 5 days per week and is only located in the location(s) posted. No relocation is offered.

Overall Purpose:

Technical Expertise and Support: Serve as a lead technical expert and Subject Matter Expert (SME) within the Service Assurance Tier 3 (GT3) team. Provide specialized support for D2 technologies, including SD-WAN solutions such as Silver Peak SDWAN, VMware/Broadcom/Arista SD-WAN and Cisco SD-WAN, along with virtualized platforms like Flexware and Universal CPE. Act as a recognized routing and connectivity SME across all supported service lines, frequently consulted by peers for technical advice and problem resolution. The position exercises judgment by effectively managing a high volume of complex and critical customer network outages, requiring swift and accurate decision-making to triage and isolate issues. The candidate applies advanced critical thinking skills to analyze problems deeply and prioritize actions that minimize service impact. Additionally, judgment is demonstrated in tailoring communication—translating technical findings into clear, appropriate messages for diverse audiences, including both internal engineers and customers with varying technical expertise—ensuring understanding and maintaining professionalism throughout critical situations.

Training and Mentorship:

Serve as a mentor for GT3 peers, other Service Assurance teams, and provide guidance to LCM/LE resources. Develop and deliver training materials and documentation for GCSC and GT3 teams, capturing best practices in troubleshooting and sharing lessons learned. Act as a key resource for managing complex, long-duration issues and technical escalations, supporting both peers within the GT3 organization and management. Manage projects from initiation to completion by planning scope, schedule, and resources. Lead cross-functional teams, monitor progress, mitigate risks, and communicate updates to stakeholders. Ensure quality, manage changes, and drive continuous improvement throughout the project lifecycle.

Required Technical Expertise (Expert Level)

The ideal candidate will possess expert-level experience in enterprise networking, SD-WAN technologies, network security, and advanced troubleshooting within large-scale, mission-critical environments. Core Technical Competencies Advanced knowledge of enterprise routing, switching, and network architecture design Expert-level troubleshooting and root cause analysis across complex WAN, LAN, Wireless, Security, Cloud, and SD-WAN environments Extensive experience with: Cisco Routing and Switching Platforms Cisco Nexus Data Center Switching Cisco Wireless Infrastructure Cisco ASA Firewalls Juniper Networks Routing and Switching Solutions Riverbed WAN Optimization Technologies Aruba EdgeConnect (Silver Peak) SD-WAN VMware VeloCloud SD-WAN Network Technologies & Protocols Routing Protocols: BGP OSPF EIGRP IPSec VPN design, implementation, and troubleshooting LAN/WAN connectivity and optimization Network segmentation, redundancy, and high-availability architectures Performance monitoring, capacity planning, and proactive network optimization Security Solutions & Technologies Deep understanding of enterprise security architectures and best practices Experience implementing and supporting: Next-Generation Firewalls (NGFW) Zero Trust Network Architectures Secure Access Service Edge (SASE) Network Access Control (NAC) IDS/IPS Solutions DNS Security DDoS Protection Multi-Factor Authentication (MFA) Public Key Infrastructure (PKI) Secure Remote Access Technologies Cloud Security Controls Security Information and Event Management (SIEM) platforms Hands-on experience with: Cisco ASA and Firepower Palo Alto Networks Firewalls Cisco ISE Fortinet Solutions (preferred) Zscaler, Prisma Access, or similar SASE platforms (preferred) Experience supporting compliance and security frameworks including: NIST CIS Controls FedRAMP FISMA DoD Security Requirements Transport & Connectivity Expertise Strong understanding of WAN transport technologies including: MPLS Dedicated Internet Access (DIA) Broadband Ethernet Fiber LTE/5G Wireless Satellite Communications Private and Hybrid Network Solutions

Preferred Certifications

One or more advanced certifications strongly preferred: Networking Certifications Cisco Certified Internetwork Expert (CCIE) Enterprise Infrastructure Cisco Certified Network Professional (CCNP) Enterprise Cisco Certified Specialist – SD-WAN Juniper Networks Certified Professional/Expert (JNCIP/JNCIE) VMware SD-WAN (VeloCloud) Certification Aruba EdgeConnect SD-WAN Certification Security Certifications Certified Information Systems Security Professional (CISSP) Certified Information Security Manager (CISM) Cisco Certified CyberOps Professional Palo Alto Networks Certified Network Security Engineer (PCNSE) GIAC Security Certifications (preferred) CompTIA Security+ (minimum baseline preferred)

Security Clearance Requirements

Must be eligible to obtain and maintain a U.S. Government security clearance. Active Secret Clearance preferred. Active Top Secret (TS) or Top Secret/Sensitive Compartmented Information (TS/SCI) clearance highly desirable. Experience supporting Federal Government, Defense, Intelligence Community, or highly regulated environments is strongly preferred.

Additional Qualifications

Demonstrated ability to lead complex network incidents, escalations, and service restoration efforts. Experience supporting geographically dispersed enterprise and government environments. Strong analytical, documentation, communication, and customer-facing skills. Proven ability to serve as a technical leader and mentor for network engineering and operations teams.

Integration and Support of New Technologies

Integrate and support new technology platforms into network environments, including developing, testing, training, and creating methods and procedures for new technology introduction.

Collaboration with CTO Partners

Collaborate with Partners, including working in Agile/DevOps environments and reviewing and signing off on CTO designs.

Utilization of Advanced Techniques

Utilize advanced networking techniques such as software-defined networking, virtualization, containerization, CI/CD pipelines for automation, custom tool creation, and advanced data analytics.

Troubleshooting and Problem Management

Resolving complex network issues, including providing technical leadership, resolving critical outages, leading root cause analysis, and driving problem management initiatives.

Development of Tools and Metrics

Develop tools and metrics for network operations, including creating custom tools, network performance metrics, and network automation.

Job Contribution

An expert in their field, applying broad business knowledge and strategic insight surrounding emerging trends and technologies to solve complex problems and drive organizational results. Leads critical, high-impact projects and designs/implements innovative business strategies. Works with minimal oversight, frequently consulting senior leadership and influencing executive decisions. Serves as a mentor and assists others with challenging issues.

Supervisor: No TCP

Career Step Differentiator: Guiding cross-functional teams in technology insertion and root cause analysis, managing vendor relationships, and ensuring network health through advanced analytics, while leading across multiple technologies.

Education/Experience

Bachelor’s degree (BS/BA) desired. 7+ years of related experience. Certification is required in some areas.

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 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

Our Principal Adv Network Tech Support jobs earn between $143,800.00 - $215,800.00 USD Annual. 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.

Weekly Hours: 40 Time Type: Regular Location: Richardson, Texas Salary Range: $143,800.00 - $215,800.00

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. AT&T is a fair chance employer and does not initiate a background check until an offer is made.

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. 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.