Senior AI Engineer Build Next-Gen AI for Customer

T-Mobile; Bellevue (WA); On-site; USD 140,000 - 210,000; Full time

Job summary

T-Mobile in Bellevue, WA is seeking a Senior AI Engineer to architect and optimize the agentic AI systems powering our customer service experiences. You will design AI that works across models, internal APIs, and third-party tools to create reliable, production-grade workflows and intuitive customer interactions.

Using techniques such as prompt engineering, model fine-tuning, evaluation frameworks, and system-level orchestration, you’ll improve accuracy, reliability, and reasoning capabilities

Qualifications

• Experience building AI systems for customer service
• Ability to design and optimize production-grade AI workflows
• Familiarity with evaluating AI models and frameworks

Responsibilities

• Design AI that coordinates across models, internal APIs, and third-party tools.
• Develop and optimize production-grade AI workflows for customer interactions.
• Collaborate with engineering, product, and operations teams to deploy reliable AI in real-world scenarios

Skills

Prompt engineering

Model fine-tuning

System orchestration

AI engineering

Job description

T-Mobile in Bellevue, WA is seeking a Senior AI Engineer to architect and optimize the agentic AI systems powering our customer service experiences. You will design AI that works across models, internal APIs, and third-party tools to create reliable, production-grade workflows and intuitive customer interactions.

Using techniques such as prompt engineering, model fine-tuning, evaluation frameworks, and system-level orchestration, you’ll improve accuracy, reliability, and reasoning capabilities