About the role#
This is an 11-week paid internship for Summer 2027. You will join the T-Ads team to work on media playback technology for our advertising ecosystem. You will work on a cross-platform player that supports Android, Linux, and Windows devices. This is an on-site, full-time position based in Philadelphia. You will be paired with mentors and work alongside engineers, product partners, and designers to build features with real-world impact.
What you'll do#
- 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 various 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 you'll need#
- At least 18 years of age.
- Legally authorized to work in the United States now and in the future.
- Must have one or more courses remaining in a bachelor's or graduate degree program after the internship.
- Experience with at least one modern programming language such as Kotlin, Java, or TypeScript.
- Familiarity with Kotlin or Android development, or a strong interest in learning both.
- Understanding of software development fundamentals, data structures, and algorithms.
- Exposure to version control systems such as Git.
- Strong problem-solving skills and a drive to learn.
- A habit of challenging assumptions and working well with others.
- Interest in or exposure to distributed systems, IoT, or cross-platform development is preferred.
Location & details#
- Location: Philadelphia, Pennsylvania.
- Work Modality: On-site.
- Term: Summer 2027.
- Employment Type: Full-time.
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
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