Sr. AI Engineer

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About the role

We’re looking for a Sr. AI Engineer to lead the evolution of T-Mobile’s Agentic Next Best Action (ANBA) capabilities—powering intelligent, real-time decisioning and enabling the next best customer experiences at scale. In this role, you will design and optimize agentic AI systems that determine and execute the most effective next action for each customer interaction, shaping seamless, personalized experiences. You’ll leverage techniques such as prompt engineering, fine-tuning, retrieval-augmented generation (RAG), and tool-integrated reasoning to build AI that dynamically orchestrates workflows, invokes APIs, and adapts decisions based on context and intent. You’ll collaborate across engineering, product, and business teams to embed ANBA-driven intelligence into production systems, delivering proactive, outcome-oriented experiences that improve customer satisfaction and business results. This role is critical to advancing T-Mobile’s AI capabilities from traditional automation to autonomous, decision-driven systems.

Responsibilities

• Optimize AI performance through prompt engineering and fine-tuning to enhance customer service automation.
• Develop AI tools and workflows to support implementation of advanced AI systems within customer service operations.
• Architect sophisticated agentic AI systems to improve reasoning and interaction capabilities across complex workflows.
• Collaborate with cross-functional teams to ensure seamless integration of AI-driven enhancements into production systems.
• Evaluate the reliability, accuracy, and efficiency of AI models to ensure alignment with strategic objectives and customer satisfaction.
• Conduct ongoing research to stay updated with the latest AI technologies and methodologies applicable to customer service.

Requirements

• Bachelor's degree and 3+ years of related professional experience.
• Master's degree (or higher) and 1+ year of related professional experience.
• Equivalent combination of education, training, certifications, and professional experience.

Preferred Qualifications

• Minimum 4 years professional experience in developing and optimizing AI models for customer service automation using advanced techniques such as prompt engineering and fine-tuning.
• Minimum 4 years professional experience in architecting and deploying sophisticated agentic AI systems to enhance reasoning and interaction capabilities in complex workflows.
• Minimum 4 years professional experience in collaborating with cross-functional teams to integrate AI-driven enhancements into production systems.

Skills

• API Development: Python, REST APIs, OpenAPI/Swagger
• Cloud Computing: AWS, Azure
• Prompt Engineering: OpenAI APIs, Hugging Face, Anthropic Claude, Google Gemini
• Operational excellence practices and observability tools: Weights & Biases, Splunk, Datadog
• Project management tools and agile methodologies: Jira, Azure DevOps
• AI orchestration tools: LangChain, LlamaIndex, vector databases for retrieval augmented generation
• Collaboration, Data Analysis, Data Management, Data Modeling

Preferred Certifications

• Certified Analytics Professional (CAP)
• NVIDIA Deep Learning AI Certification
• Certified Data Scientist (CDS)

Legally authorized to work in the United States. No travel required. This is not a DOT-regulated, safety-sensitive position.

Pay

The national base pay range for this role is $133,100 - $240,100. The successful candidate’s actual pay will be based on work location, qualifications, and experience. Most Corporate employees are eligible for an annual bonus target of 15% based on company and/or individual performance. View the pay range for this role based on hiring location.

Benefits

Full and part-time employees have access to the same benefits when eligible, including:

• Medical, dental, and vision insurance
• Flexible spending account
• 401(k) with company match
• Employee stock grants and stock purchase plan
• Paid time off (up to 4 weeks for new full-time employees and 2.5 weeks for new part-time employees annually) and up to 12 paid holidays
• Paid parental and family leave
• 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 and home internet discounts
• Pet insurance
• Commuter and transit programs

Learn more about T-Mobile’s benefits.