AI Engineer

T-Mobile is building AI capabilities that can be delivered safely across the enterprise, with the right infrastructure and guardrails to support responsible rollout. In this on-site role in Frisco, TX, you will help design and deploy AI systems that power customer service automation and improve operational workflows. Expect a collaborative environment where measurable outcomes, customer satisfaction, and organizational efficiency are key priorities.

Salary: USD 110,200 - 228,505 per year. National base pay range: USD 110,200 - 198,700. Total target cash earnings opportunity: USD 126,730 - 228,505.

What you’ll do

• Design and implement retrieval-augmented generation (RAG) pipelines that ground AI responses in enterprise knowledge sources.
• Develop AI models to enhance customer service automation with measurable improvements.
• Use prompt engineering and fine-tuning techniques to optimize AI system performance.
• Create AI tools that support adoption of AI-driven improvements within operational frameworks.
• Partner with cross-functional teams to ensure AI systems integrate effectively and function as intended.
• Design AI solutions that improve interaction capabilities within complex service workflows.
• Contribute to strategic AI initiatives aligned to goals for customer satisfaction and efficiency.
• Complete other duties and projects as assigned by business management.

Requirements

• Retrieval Augmented Generation (RAG) with Vector Databases/Embeddings
• Prompt Engineering, including LLM orchestration and RAG workflow design
• Python with LLM orchestration frameworks such as LangChain and ADK
• Cloud Computing for RAG deployment and LLM application infrastructure, including vector database and cloud AI services
• Data analysis and model tuning
• Customer-focused mindset and collaboration experience
• Education & experience: Bachelor’s Degree plus 3 years of related work experience OR advanced degree plus 1 year of related work experience
• Acceptable areas of study include Computer Science, Engineering, Artificial Intelligence, and Data Science
• 2+ years developing and deploying machine learning models, including fine-tuning and prompt engineering
• 2+ years using AI tools and software development with Python or R
• 2+ years collaborating cross-functionally to integrate AI solutions into business workflows
• Preferred: Certified Analytics Professional (CAP)
• Preferred: Machine Learning Certification
• Preferred: Certified Data Scientist (CDS)
• At least 18 years of age and legally authorized to work in the United States

Technologies you’ll work with

• Retrieval-augmented generation (RAG)
• Vector Databases/Embeddings
• Prompt Engineering
• LLM orchestration
• Python
• LangChain, ADK
• Cloud Computing, vector database and cloud AI services
• Machine learning models, fine-tuning

Benefits

• Medical, dental and vision insurance
• Flexible spending account
• 401(k)
• Employee stock grants and Employee stock purchase plan
• Paid time off and up to 12 paid holidays
• Paid parental and family leave, plus family building benefits
• Back-up care, enhanced family support, and childcare subsidy
• Tuition assistance and college coaching
• Short- and long-term disability
• Voluntary AD&D, accident, life, disability, and long-term care insurance
• Mobile service & home internet discounts (eligible employees), pet insurance
• Access to commuter and transit programs
• Annual stock grant and access to free, year-round money coaches
• Annual bonus or periodic sales incentive or bonus (based on role) and year-end bonus (corporate employees, based on individual and/or company performance)
• Monthly bonuses for certain Customer Care positions (based on individual and/or team performance)

Travel: No