Summer 2027 Quality Engineering Internship

T-Mobile • Center City, PA

3d

About The Position

T-Mobile’s 11-week paid Summer 2027 internship offers hands-on project work, training, mentorship, and opportunities to collaborate with interns and company leaders. The intern will join the Quality Engineering team within Vistar Media (T-Mobile Ads), which works with Engineering, Product, and Business teams to validate features, identify defects early, and support a seamless customer experience.

As a Quality Engineering Intern (SDET), you will develop and maintain automated tests for key workflows on T-Ads Digital Out-of-Home (DOOH) advertising platform using tools such as Cypress and TypeScript. You will gain experience with testing best practices, debugging, and automation in the software development lifecycle. The work is intended to reduce manual testing effort, find defects sooner, and increase confidence in the platform. Prior advertising experience and experience with QA frameworks are not required.

The internship requires candidates to be at least 18, authorized to work in the United States now and in the future, and have at least one course remaining in a bachelor’s or graduate degree program after the internship. Current T-Mobile or Metro by T-Mobile employees are ineligible for external Summer Internships. Relocation assistance is available to participants who live more than 50 miles from the internship location. Intern wages range from $27 to $50 per hour; actual pay is based on education and STEM versus non-STEM designation.

Requirements

• At least 18 years of age.
• Legally authorized to work in the United States now and in the future.
• Have one or more courses remaining in a bachelor’s or graduate degree program after the internship.
• Foundational programming knowledge, with exposure to JavaScript, TypeScript, Python, or Java through coursework, personal projects, or internships.
• Familiarity with software development fundamentals, including object-oriented programming, data structures, debugging, and version control tools such as Git.
• Strong analytical and problem-solving skills and attention to detail.
• Willingness to challenge assumptions and learn new technologies quickly.
• Excellent communication and collaboration skills, with initiative to own assigned projects and move with urgency.

Nice To Haves

• Basic understanding of software testing concepts, REST APIs, or Agile methodologies.
• Hands-on experience through academic projects, personal coding projects, or GitHub contributions.
• Prior experience with test automation frameworks is not required.
• Professional experience and certifications are not required.

Responsibilities

• Build and maintain automated tests with Cypress and TypeScript to validate key workflows on the DOOH advertising platform.
• Work with Quality Engineering, Software Engineering, Product, and Business teams to understand requirements, identify test scenarios, and expand test coverage.
• Run manual and automated tests to find, document, and troubleshoot defects throughout the development lifecycle.
• Participate in refinement sessions and team discussions to gain exposure to real-world software engineering practices.
• Help improve test automation, regression testing, and overall software quality while learning modern testing methodologies.

Benefits

• Paid 11-week internship
• Mentorship and training
• Relocation assistance for program participants who reside more than 50 miles from the internship location

What This Job Offers

• Job Type: Full-time
• Career Level: Intern