AI Prompt Engineer Intern - 11-Week Paid Program

T-MOBILE USA, Inc.; Bellevue (WA); On-site; USD 37,000 - 69,000; Full time

Benefits offered by this job

Relocation assistance

Job summary

T-Mobile USA, Inc. invites motivated students to join an 11-week paid internship with the AI team. You’ll do real work, build relationships, and be mentored while tackling meaningful projects.

As a prompt engineer, you’ll design and test prompts for conversational AI, maintain a prompt library, and collaborate with product, engineering, and business teams.

Relocation assistance is available for eligible participants; interns earn $27–$50 per hour, based on education and STEM designation.

Qualifications

• Hands-on experience prompting LLMs such as Claude, ChatGPT, or Copilot.
• Strong written communication skills.
• Analytical mindset with ability to evaluate outputs and iterate from data.
• Curiosity, urgency and fast learning on the job.
• Familiarity with few-shot, chain-of-thought, and system prompts.
• Experience with Excel, SQL, or Agile tools such as Jira.

Responsibilities

• Design, write, test, and iterate prompts for conversational AI use cases such as chat and voice bots.
• Build and maintain a documented prompt library with versioning, best practices, and results.
• Evaluate prompt performance with structured testing and side-by-side comparisons, and recommend improvements to accuracy, tone, and containment.
• Create prompts and workflows that help the team with research, documentation, and analysis.
• Partner with product, engineering, and business stakeholders to translate requirements into effective AI behavior.
• Present your prompt strategy and results to leadership.

Skills

LLM prompting

Written communication

Analytical mindset

Curiosity

Excel

SQL

Jira

Education

Bachelor's or graduate degree student

Tools

Jira

Excel

SQL

Job description

T-Mobile USA, Inc. invites motivated students to join an 11-week paid internship with the AI team. You’ll do real work, build relationships, and be mentored while tackling meaningful projects.

As a prompt engineer, you’ll design and test prompts for conversational AI, maintain a prompt library, and collaborate with product, engineering, and business teams.

Relocation assistance is available for eligible participants; interns earn $27–$50 per hour, based on education and STEM designation.