MTS, Systems Architecture Engineering

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Job Overview

The System Architecture Engineer develops and evolves technical network and service architectures and design strategies to maintain, enhance, and evolve the T‑Mobile Technology portfolio. The role protects the software, infrastructure, and network systems that power T‑Mobile’s IT and customer‑facing services, ensuring scalability, availability, performance, security, and reliability across applications and networks. The engineer plays a critical role in outage bridges, leveraging KPIs, telemetry, and AI‑driven analytics to pinpoint problems quickly and accurately.

From designing and maintaining CI/CD pipelines to operating large‑scale network infrastructure (Cisco, Juniper, Check Point, F5, Infoblox, A10), the engineer enables great customer experiences through automation, observability, and innovation. Specific tasks include creating, adapting, or revising detailed schematics of network and service architecture; selecting hardware and software; interpreting network simulations and test results; and translating complex ideas to diverse audiences.

Job Responsibilities Reliability Engineering

• Create new designs, architectures, and standards for delivering software and network services faster, better, and more reliably.
• Improve scalability, latency, and efficiency of T‑Mobile’s applications and network services.
• Contribute to cloud enablement, containerization, and microservices reliability.
• Manage improvement work, PoCs, and future automation projects.

Network Reliability & Operations

• Diagnose and resolve complex issues in routers, firewalls, load balancers, DNS, and global traffic managers (Cisco, Juniper, Check Point, A10, Infoblox, BIND, F5 GTM).
• Proactively forecast and address capacity and performance bottlenecks to prevent outages.
• Provide network expertise on outage bridges, rapidly identifying root causes using developed KPIs and telemetry.
• Define standards and playbooks for fault prevention and outage handling.

Observability & Telemetry

• Build and operationalize telemetry pipelines with Service Now AIOps, Dynatrace, Thousand Eyes, Sev One, Splunk, and Open Telemetry.
• Develop AI/ML‑driven models to detect anomalies and predict failures across network, infrastructure, cloud, DNS, and application layers.
• Create and maintain dashboards and health checks for real‑time visibility into system and network reliability.

Cloud, Automation & Infrastructure-as-Code

• Use Terraform and IaC to deploy and manage infrastructure and applications in AWS cloud.
• Integrate reliability practices into CI/CD pipelines and Dev Ops workflows.
• Define, measure, and optimize performance KPIs, SLIs, and SLOs across hybrid environments (on‑prem + cloud).

Technical System Expertise

• Deep understanding of system parameters, configurations, and how to alter them for desired results.
• Proactively identify system weaknesses, determine root cause, and find solutions.
• Experience in multiple technologies and disciplines, including building complex network and service architecture.

Technical Engineering Services

• Lead engineering projects and supervise principal‑level engineers as needed.
• Present project improvement scenarios to executive team and engage vendors or industry fellows.
• Diagnose and redesign based on changing business requirements and objectives.
• Prepare executive summaries of activities and communicate areas of opportunity.

Innovation

• Create, present, design, and implement new ideas to improve existing and new systems.
• Investigate architecture, design strategies, and standards to address new service offerings before creation.
• Contribute to industry or vendor forums on T‑Mobile’s behalf and analyze industry trends.

Technical Writing

• Produce advanced documentation, architecture, capabilities, limitations, and technical specifications.
• Create executive and external materials, including white papers.
• Contribute to industry publications and professional forums.

Technical Leadership

• Monitor and influence…