Summer 2027 T-Ads Software Engineering Internship

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.

T-Mobile didn’t become a leader by following the playbook. We got here by breaking it. We’re a disruptor that now plays on a higher tier, and we’re still raising the bar for millions of customers nationwide. If you want to work somewhere that sets the standard instead of matching it, this is your place.

This is an 11-week paid learning experience where you’ll do real work, not busywork. You’ll build relationships with other interns and leaders across the company, and you’ll be paired with mentors who will challenge you to grow skills that matter. We’ll give you hands-on projects with real stakes, and we expect your creativity and sharp ideas to make an immediate impact. You’ll work alongside T-Mobile employees who have your back and who still believe the best ideas can come from anyone.

What It’s Like

The T-Ads team is small enough that you’ll be seen and big enough that your work matters. We work in an Agile rhythm with standups, planning, and retrospectives. A typical week mixes building features in a modern greenfield codebase, pairing with experienced engineers, getting code reviews, and testing on real devices in our lab. You’ll work with engineers, product partners, and designers, and your ideas will be heard.

What You’ll Do

You’ll help build the next generation of media playback technology behind T-Mobile’s advertising ecosystem. Our cross-platform player delivers consistent, high-performance playback on Android, Linux, and Windows devices in real-world public environments. You’ll implement new features and port functionality from a legacy system, which speeds up time-to-market for a platform used across customer-managed deployments and helps T-Mobile stay ahead.

Key Responsibilities

• Design, implement, test, and debug features in a greenfield codebase using Kotlin Multiplatform
• Port functionality from the legacy player to the new cross-platform architecture
• Test and validate software across a wide range of hardware configurations in our lab to ensure reliability and performance
• Collaborate with engineers, product partners, and designers on performance, reliability, and usability
• Contribute to standups, planning, and retrospectives
• Participate in code reviews and follow best practices for quality and maintainability

What It Takes

• Familiarity with Kotlin or Android development, or a strong interest in learning both
• Experience with at least one modern programming language (e.g., Kotlin, Java, TypeScript)
• Understanding of software development fundamentals, data structures, and algorithms
• Exposure to version control systems such as Git
• Strong problem-solving skills, curiosity, and the drive to learn and move with urgency in a fast-paced environment
• A habit of challenging assumptions and working well with others
• Plus: interest in or exposure to distributed systems, IoT, or cross-platform development. Experience with large connected systems is a big differentiator that speeds up onboarding.

Minimum Qualifications

• At least 18 years of age
• Legally authorized to work in the United States now and in the future
• Must have one or more course(s) remaining in a Bachelors or Graduate degree program post internship
• Employees of T-Mobile or Metro by T-Mobile are ineligible for external Summer Internships, please see Magenta Accelerator if interested

Relocation assistance will be provided to program participants who reside more than 50 miles from the internship location.

Intern wages range from $27/hour to $50/hour. The successful candidate’s actual pay will be based on education/STEM vs non-STEM designation.

Never stop growing!As part of the T-Mobile team, you know the Un-carrier doesn’t have a corporate ladder–it’s more like a jungle gym of possibilities! We love helping our employees grow in their careers, because it’s that shared drive to aim high that drives our business and our culture forward. By applying for this career opportunity, you’re living our values while investing in your career growth–and we applaud it. You’re unstoppable!T-Mobile USA, Inc. is an Equal Opportunity Employer. All decisions concerning the employment relationship will be made without regard to age, race, ethnicity, color, religion, creed, sex, sexual orientation, gender identity or expression, genetic information, national origin, religious affiliation, marital status, citizenship status, veteran status, the presence of any physical or mental disability, or any other status or characteristic protected by federal, state, or local law. Discrimination, retaliation or harassment based upon any of these factors is wholly inconsistent with how we do business and will not be tolerated.Talent comes in all forms at the Un-carrier. If you are an individual with a disability and need reasonable accommodation at any point in the application or interview process, please let us know by emailing ApplicantAccommodation@t-mobile.com or calling 1-844-873-9500. Please note, this contact channel is not a means to apply for or inquire about a position and we are unable to respond to non-accommodation related requests.