Sr Specialist Member of Technical Staff
About The Position
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. Introduction At AT&T, we empower technology leaders to drive innovation in a fast-evolving, connected world. Your expertise will help design and deliver next-generation Mobility Core solutions that enable scalable, secure, and high-performance network services supporting millions of customers. Job Overview AT&T is seeking a Sr. Specialist Member of Technical Staff to lead engineering delivery across critical Mobility Core network functions, with a strong focus on NEF (Network Exposure Function) and virtual Active Charge (vAC - purpose specific Diameter Routing Agent) platform.
Requirements
- Strong experience in 5G Core / Mobility Core network functions
- Expertise in CNF/Kubernetes-based deployments and cloud-native platforms
- Solid knowledge of Linux, including system operations, troubleshooting, and performance analysis
- Hands-on experience with: Azure Operator Nexus (or equivalent cloud platforms)
- Hands-on experience with: CI/CD pipelines (Azure DevOps, GitHub)
- Hands-on experience with: Monitoring & observability tools
- Proficiency in VS Code and modern development workflows, including debugging, extensions, and Git integration
- Experience with GitHub, including source control, branching, pull requests, and pipeline integration
- Familiarity with agentic AI models and frameworks to enable AI-driven coding, automation, testing, and intelligent troubleshooting
- Proficiency in network protocols (HTTP/REST, Diameter)
- Strong collaboration skills across cross-functional teams (engineering, operations, vendors)
- Analytical mindset with strong problem-solving ability and bias toward execution
Nice To Haves
- Proven experience driving end-to-end engineering delivery for telecom or cloud-native platforms
- Strong expertise in automation frameworks and AI-enabled solutions
- Ability to lead complex troubleshooting across distributed systems
- Experience improving system reliability, performance, and operational efficiency
- Strong communication and collaboration skills across global and cross-functional teams
Responsibilities
- Drive design, implementation, and validation of cloud-native network solutions
- Leverage AI and automation to improve testing, troubleshooting, and system performance
- Collaborate across engineering, operations, and vendor teams to ensure reliable and scalable 5G Core deployments
- Play a key role in accelerating certification cycles, enhancing observability, and enabling modern service exposure capabilities across the Mobility Core.
- Own engineering delivery for NEF, vAC, and cross-platform support (PCF, BSF, PCRF, PAS)
- Understand design and troubleshoot HTTP/REST and Diameter signaling flows, including end-to-end call flows and policy interactions
- Build and operate Azure Operator Nexus (AON) lab environments for validation and issue reproduction
- Develop CI/CD pipelines using Azure DevOps (ADO) and GitHub for provisioning, upgrades, testing, and rollback
- Drive AI-assisted test automation frameworks to accelerate certification and improve issue detection
- Perform root cause analysis using logs, KPIs, and packet-level diagnostics across network functions and infrastructure
- Create and maintain runbooks, lab guides, test plans, and release documentation
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
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What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
