Principal Engineer, Systems Architecture

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** This is not a remote position. T-Mobile is a hybrid work environment requiring work in the office three (3) days per week. The successful candidate will be located in either Seattle, Washington;
Frisco, Texas or Overland Park, Kansas areas.
** Job Overview This role develops and evolves technical network and service architectures to maintain and enhance the technology portfolio. It involves creating, adapting, and revising detailed schematics, hardware and software selections, and implementation processes. The role requires interpreting network simulations, test results, and technology studies to inform design decisions. Success is measured by the effectiveness of architecture solutions and their alignment with business objectives.

The work impacts organizational technology capabilities and customer service quality through improved network design and strategy.

Job Responsibilities:

Lead the development and evolution of network and service Created architecture designs to support technology portfolio enhancements Conduct analysis and interpretation of network simulations and test results to inform architecture decisions Create and maintain technical documentation and presentations to communicate complex ideas to diverse audiences Drive engineering projects by applying techniques, supervising engineers, and optimizing network architecture processes Monitor industry technologies and standards to influence technology and policy decisions across the organization Coach and mentor engineers on technology decisions and contribute to cross-functional technical investigations Also responsible for other duties/projects as assigned by business management as needed Required

Education:

Bachelor's Degree plus 7 years of related work experience OR Advanced degree with 5 years of related experience

Acceptable areas of study include Engineering, Computer Science Required

Work Experience:

7-10 years Technical engineering experience
12+ years of experience across UCaaS, telecom, or cloud communications platforms.

Cloud architecture expertise across Microsoft Azure, AWS or GCP; relevant cloud certifications are a plus.

Strong hands-on experience with IMS Core, SBC, SIP, VoIP, SMSC/MMSC, and related telecom integrations.

Proven experience designing, deploying, and operating large-scale, carrier-grade and enterprise communications platforms.

Experience with Agentic AI and AI-powered workflow automation.

Hands-on experience building AI agents or solutions using Microsoft Copilot Studio, OpenAI, or similar platforms.

Strong production troubleshooting and incident leadership skills, including diagnosing complex issues with limited data and driving critical incidents to resolution.

Experience with cloud-native architectures, including Kubernetes, containers, microservices, APIs, and distributed systems.

Required

Knowledge, Skills and Abilities:

Analytical Thinking Communication Mentorship Network Architecture Solution Architecture Strategic Objectives Systems Architecture Systems Engineering Technical Writing Telecommunications #LI-Corporate At least 18 years of age Legally authorized to work in the United States Travel:

Travel Required (Yes/No):
Yes

DOT Regulated:

DOT Regulated Position (Yes/No):
No

Safety Sensitive Position (Yes/No):
No

Total Target Cash Earnings Opportunity: $156,480 -…