Principal Conversation Designer
$115,400–$208,100 year
On-siteBellevue, Washington, United States
Job Summary
Lead design, strategy, and execution of human-centered conversational experiences across T-Mobile's digital ecosystem by translating AI product vision into working behavioral systems. Define and evolve voice, tone, and personality guidelines while creating scalable conversation architectures and reusable patterns. Design conversation response patterns and agentic interaction models that govern how AI agents interpret intent and act, ensuring behavior is explainable, predictable, and controllable within customer-facing environments. Collaborate closely with Product, UX, Research, Engineering, and ML/LLM teams to improve natural interactions, lead cross-functional workshops, and mentor designers. Rapidly test and refine conversation patterns based on real user interactions, task success signals, and trust data to continuously optimize experiences.
Required Qualifications
- 7+ years of experience in UX writing, content design, or conversational design
- Strong portfolio demonstrating systems thinking and end-to-end work across AI conversation design, including shipped outcomes and structured content frameworks
- Deep understanding of human-centered design principles
- Experience collaborating across Product, Design, Engineering, and Research
- Deep understanding of voice and text-based conversational systems, including design, development, and optimization of chatbot and GenAI/LLM-driven experiences
- At least 18 years of age
- Legally authorized to work in the United States
- Travel Required (Yes/No): Yes
Desired Qualifications
- Experience with structured data, schemas, ontologies, or content models that enable scalable AI behavior
- Leadership experience mentoring or coaching designers
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