About the role#
This is an 11-week paid internship focused on the intersection of software engineering, large language models, and workflow automation. You will work on real projects to help improve how AI agents and developer tools support engineering at T-Mobile. You will collaborate with team members to turn workflow problems into working prototypes, using evidence to determine where AI is effective and where human judgment is needed.
What you'll do#
- Partner with engineers to define a focused use case, requirements, and measurable success criteria.
- Build and test agent tools, API integrations, or developer workflow automations using Python or TypeScript.
- 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 security requirements.
- Compare results against a baseline to assess correctness and usefulness.
- Document implementation choices, share progress, and deliver a working demonstration and handoff.
- Incorporate feedback and provide recommendations for next steps on your prototype.
What you'll need#
- Currently pursuing a bachelor's or graduate degree in Computer Science, with at least one course remaining after the internship.
- Foundational programming skills in Python, TypeScript, or JavaScript through coursework, research, or personal projects.
- Familiarity with Git, APIs, debugging, and automated testing.
- An interest in LLMs, AI agents, and developer experience.
- A willingness to test assumptions and critically review AI-generated code.
- Ability to break down ambiguous problems and communicate clearly.
- Exposure to agent frameworks, MCP, RAG, evaluation tools, CI/CD, or cloud platforms is helpful but not required.
- Must be at least 18 years of age.
- Legally authorized to work in the United States now and in the future.
Location & details#
- Location: Bellevue, Washington.
- Term: Summer 2027.
- Modality: On-site.
- Status: Full-time.
- Compensation: $27 to $50 per hour, depending on education and STEM designation.
About T-Mobile
T-Mobile is a telecommunications company based in Bellevue, Washington. It operates a 5G network that provides wireless services to consumers and businesses. The company manages several brands including Metro by T-Mobile and Mint Mobile. It functions as a public company with a workforce of over 10,000 employees.
How to get in at T-Mobile
Securing an internship at T-Mobile requires speed because early applicants often have their resumes reviewed before the volume of candidates becomes unmanageable. Intern Insider sends an instant alert the moment a role matching your target is published, which helps you apply among the first and get your profile seen before the pile grows. Reaching out to the right people often yields better results than submitting an application into a general queue. Intern Insider surfaces the recruiters behind T-Mobile roles so you can contact them directly to ask about the position or a referral, which materially improves your response rates.
