Summer 2026 Engineering Intern, System Architecture Internship

T-Mobile•Bellevue, WA

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 The Messaging team plays a critical role at T-Mobile by delivering reliable and scalable messaging services that support both consumer and enterprise communication. These services enable text, picture, and application-to-person (A2P) messaging, which are essential for campaigns, one-time passwords (OTP), notifications, and business‑critical communications. By ensuring secure, high‑quality messaging, the team helps drive customer engagement, trust, and revenue growth. An intern on the Messaging team supports this mission by assisting with service monitoring, data analysis, documentation, and testing of messaging platforms, while gaining hands‑on exposure to large‑scale telecom systems and cross‑functional collaboration. What You'll Do The individual will be responsible for building automation for messaging services and developing Power BI reports to streamline processes, support operational efficiency, and reduce time to market. This includes designing automated workflows that enhance service reliability, eliminate manual effort, and improve visibility into key performance metrics. Additionally, the role will involve collaborating with cross‑functional teams to understand reporting needs, optimize dashboards, and ensure data accuracy. Through these efforts, the intern will contribute to enabling faster decision‑making and supporting the continued growth of T‑Mobile’s messaging ecosystem.

Requirements

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.
Engineering background: The ideal candidate will bring foundational knowledge in engineering principles, with an interest in applying those skills to large‑scale messaging platforms and telecom systems. They should be comfortable approaching technical challenges with analytical thinking, problem‑solving methodologies, and a willingness to learn new tools and technologies. This background will support their ability to design and implement automation, contribute to data‑driven reporting solutions, and engage effectively with engineers, architects, and cross‑functional partners. An engineering mindset will also help the individual understand system dependencies, performance behaviors, and architectural trade‑offs as they support the growth and optimization of T‑Mobile’s messaging ecosystem.