Summer 2026 Software Development Internship

T-Mobile•Frisco, TX

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. As an Associate Software Engineer specializing in the Salesforce Platform, you will contribute to the design, development, and integration of scalable, high-impact solutions. Working alongside experienced engineers, product managers, and business stakeholders, you’ll gain hands-on experience with enterprise architecture, API integrations, CI/CD pipelines, and Salesforce platform capabilities. This is a growth-focused role designed to provide mentorship, exposure to enterprise systems, and a clear career path within T-Mobile’s technology organization. What It's Like Our team plays a critical role in enabling T-Mobile’s Retail and Frontline operations by developing applications that support thousands of employees in their daily workflows. We deliver scalable, reliable solutions that streamline processes, improve efficiency, and ensure smooth execution across Retail channels. With a portfolio of more than 60 applications—including onboarding tools, store operations management, and cross-functional case management systems—we provide the technology foundation that keeps Retail running effectively. Our work directly impacts employee productivity, customer experience, and overall operational excellence at T-Mobile. What You'll Do As a summer intern on our team, you will have the opportunity to work directly with Salesforce technology, contributing to real-world solutions that support T-Mobile’s Retail and Frontline operations. Throughout the internship, you will enhance or build new Salesforce features that help business teams streamline their routine processes and operate more efficiently. You will also focus on automation initiatives, learning how to identify manual workflows and convert them into scalable, automated solutions that improve accuracy, speed, and user experience. This hands-on work will give you meaningful exposure to Salesforce’s capabilities, development tools, and best practices, as well as insight into how the platform supports a company as large and dynamic as T-Mobile. By the end of the summer, you will have gained practical technical skills, contributed to impactful business solutions, and developed a deep understanding of how Salesforce powers our organization. We’re excited to support your growth and see the value you will bring to the team.

Requirements

Familiarity with Agile frameworks and full - stack development (Required)
Experience with at least one Object-Oriented Programming language such as Java or C++ (Required)
Proficiency working with SQL and dynamic queries (Required)
Experience with version control and CI/CD tools such as Git, GitLab, or Jenkins (Required)
Strong communicator, able to bridge technical and business discussions (Required)
Customer-first mindset with focus on usability and adoption (Required)
Ability to learn quickly and apply data -driven insights to problem-solving (Required)
Produces clear documentation and design artifacts that enable collaboration (Required)
Growth mindset with eagerness to explore emerging technologies (Required)
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.

Nice To Haves

Exposure to Salesforce development (Apex, LWC, Aura) or enterprise APIs (REST/SOAP) (Preferred)
Knowledge of event-driven systems and scalable architecture patterns (Preferred)
Salesforce Platform Developer I certification ( Encouraged, supported by T-Mobile)
Salesforce Administrator certification (Optional)

Responsibilities

Work with Salesforce technologies to build and enhance features that support Retail and Frontline business processes.
Develop automation solutions that streamline manual workflows and improve operational efficiency.
Gain hands-on experience with Salesforce tools while contributing to real, impactful projects that support T-Mobile’s enterprise operations.