Summer 2026 Quality Engineering Internship

T-Mobile • Philadelphia, PA

3d • $26 - $47

About The Position

T-Mobile is synonymous with innovation–and you could be part of the team that disrupted an entire industry! We reinvented customer service, brought real 5G to the nation, and now we’re shaping the future of technology in wireless and beyond. Our work is as exciting as it is rewarding, so consider the career opportunity below as your invitation to grow with us, make big things happen with us, above all, #BEYOU with us. Together, we won’t stop! Get hands-on experience, training—and a leg up on a bright future. Learn. Achieve. Build a career. T-Mobile is revolutionizing the wireless industry for millions of customers nationwide. Working here means rolling up your sleeves and redefining the status quo with a team that has your back every step of the way! This is an 11-week paid learning experience during which you’ll be able to connect and network with other interns and leaders within the company. We invite you to come innovate with mentors who will challenge you to develop meaningful skills. You’ll contribute your creativity and outstanding ideas, while working alongside T-Mobile employees. We’ll give you hands-on projects and the chance to create an immediate impact. What It’s Like Our Quality Engineering team plays a critical role in delivering reliable, high-quality digital experiences that millions of T-Mobile customers rely on every day. We work closely with engineering and product partners to ensure new features are thoroughly tested, performant, and ready for real-world use at scale. By building strong automation and identifying issues early, the team helps accelerate releases while maintaining customer trust. Our work directly impacts platform stability, user satisfaction, and the overall success of T-Mobile’s customer-facing applications. What You’ll Do As a Quality Engineering Intern, you’ll gain hands-on experience contributing to real production systems throughout the summer. You’ll write and maintain automated end-to-end UI tests using Cypress and TypeScript for modern web applications, as well as develop automated API tests to validate backend services and integrations. You’ll collaborate closely with developers and QA engineers to understand new features, reproduce bugs, and ensure critical user flows are well covered. Your work will help improve test reliability, increase automation coverage, and support faster, higher-quality releases.

Requirements

• Currently pursuing a degree in Computer Science, Engineering, Information Systems, or a related technical field
• Basic programming experience with JavaScript or TypeScript
• Understanding of web applications and how front-end and back-end systems interact
• Strong attention to detail with a curiosity for edge cases and unexpected behaviors
• Ability to clearly communicate bugs, test results, and technical findings
• Eagerness to learn test automation, software quality best practices, and modern development workflows
• At least 18 years of age
• Legally authorized to work in the United States
• Must be actively enrolled in a Bachelors or Graduate degree program
• Employees of T-Mobile or Metro by T-Mobile are ineligible for Internships
• Employer does not sponsor work visas for this position. Note that this also applies to individuals who are students in F-1 status who desire sponsorship after they complete their education.

Responsibilities

• Build automated UI test cases using Cypress and TypeScript to validate user workflows, edge cases, and regression scenarios
• Create and maintain automated API test suites to verify request/response behavior, status codes, and data accuracy
• Debug failing tests, investigate defects, and document issues with clear reproduction steps and supporting evidence
• Maintain and refactor existing test code to keep the automation suite stable, readable, and scalable
• Support test execution within CI/CD pipelines, review test results, and help reduce flaky tests

Benefits

• Relocation assistance may be provided to program participants who reside more than 50 miles from the internship location.
• Intern wages range from $26/hour to $47/hour.

What This Job Offers

• Career Level: Intern