AI Tools & Workflow Intern — Build Real Prototypes

T-Mobile; Bellevue (WA); On-site; USD 37,000 - 69,000; Full time

Job summary

T-Mobile invites you to an 11-week paid learning internship where you’ll work on real projects, partnering with engineers and leaders across the company. You’ll explore AI agents, developer tools, and workflow automation, turning problems into prototypes while receiving mentorship and hands-on experience.

You'll build and test integrations, document decisions, and deliver a working demonstration with next steps.

Qualifications

• Foundational programming skills in Python and/or TypeScript/JavaScript.
• Familiarity with Git, APIs, debugging, and automated testing.
• Interest in LLMs, AI agents, and developer experience.

Responsibilities

• Build a scoped AI agent or developer-tooling project addressing a concrete engineering workflow.
• Implement integrations with approved APIs or tools, add automated tests and evaluation cases, and instrument the solution for inspection and debugging.
• Document design decisions, incorporate feedback, and demonstrate the prototype with recommendations for next steps.
• Create evaluation datasets and regression tests to measure quality and identify failure modes.
• Add logging and tracing to investigate errors, latency, and tool behavior while following data-handling requirements.

Skills

Python

TypeScript/JavaScript

Git

APIs

Debugging

Automated testing

LLMs/AI agents

Job description

T-Mobile invites you to an 11-week paid learning internship where you’ll work on real projects, partnering with engineers and leaders across the company. You’ll explore AI agents, developer tools, and workflow automation, turning problems into prototypes while receiving mentorship and hands-on experience.

You'll build and test integrations, document decisions, and deliver a working demonstration with next steps.