Be unstoppable with us!
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!

As a leading telecom company, T-Mobile has a natural place in the world of connected devices, so called Internet of Things (IoT). Our team is focused on in-house product development including hardware, software platform and mobile applications. We strive to deliver connected experience to customers in a fast and iterative development process. Customer focus and customer driven development are important skills in our team no matter the role.

As a Principal iOS Engineer, you will be pioneering technology in the hardware and software world. You will be merging the hardware features with software to provide a unified, smooth customer experience over Bluetooth stack, location-based services while prioritizing privacy and security of customer data.

You will be interacting with product managers to help them discover iOS features and capabilities, advise them on feasibility, and provide estimations. You will be working with hardware engineers to connect apps with hardware and deliver functionality that is highly technical, and engineering focused.

Test driven development will be your foundation for delivering quality code at source with unit tests and integration tests. You will own the delivery of your code from end-to-end, automating continuous integration and delivery.

• Skill Required:

• Proven experience as an iOS developer using Swift, Objective-C, Cocoa Touch, UIKit, and XCode in an agile environment
• Experience with Bluetooth stack, location services, GPS and maps
• Deep experience-based understanding of how to build mobile applications at scale.
• Proficiency in Swift object-oriented and/or functional programming from industry working experience
• Experience working in a team of iOS developers participating in code reviews, pull requests, and pair programming.
• Proven experience mentoring and coaching other iOS developers in a collaborative and team-based organization.
• Understanding of consuming RESTful web services, managing authentication, authorization, and session
• Strong understanding of modern development principles such as trunk-based development, feature toggles, and branch by abstraction to support performant and collaborative engineering teams.
• Strong understanding of CI/CD tools such as Azure DevOps to continuously and autonomously deliver high-quality apps to guarantee stable and performant experiences.
• Good understanding of Apple’s accessibility features and experience building accessible experiences
• Good understanding of dependency management, using Swift Package Manager and/or Cocoapods
• Experience working with multi-functional teams such as design, product, data teams to deliver great user experiences.
• Understanding of computer science fundamentals, data structures, and algorithms to ensure consistency to software engineering standard methodologies including object-oriented and functional programming

• Skills Desired:

• Passion for crafting outstanding experiences on iOS using Apple’s Human Interface Guidelines using your strong understanding of functional programming and reactive patterns using Combine or RxSwift
• Exposure to Cloud or Firmware Development.
• Knowledgeable in asynchronous development, networking, or Bluetooth.
• Understanding of internet protocols such as TCP/IP, UDP and networking and security standards
• Familiarity with API development, database queries, backend systems
• Leadership experience

• Qualifications:

• 9 plus years of iOS development experience
• Bachelor's degree in STEM faculties
• Published Apps in the App Store

#LI-Corporate

Washington Pay Range: $134,500.00 - $212,900.00

The pay range above is the general base pay range for a successful candidate in the state listed. The successful candidate’s actual pay will be based on various factors, such as work location, qualifications, and experience, so the actual starting pay may be above or below this range. At T-Mobile, employees in regular, non-temporary roles are eligible for an annual bonus or periodic sales incentive or bonus, based on their role. Most Corporate employees are eligible for a year-end bonus based on company and/or individual performance and which is set at a percentage of the employee’s eligible earnings in the prior year. Certain positions in Customer Care are eligible for monthly bonuses based on individual and/or team performance, while Retail and Business Sales roles are eligible for monthly or quarterly sales incentives. And since we are ALL owners, EVERY employee at T-Mobile is eligible for an Annual Stock Grant. For information about T-Mobile’s amazing benefits, check out https://careers.t-mobile.com/culture-and-benefits/

Washington Pay Range : $157,300.00 - $212,900.00

The pay range above is the general base pay range for a successful candidate in the state listed. The successful candidate’s actual pay will be based on various factors, such as work location, qualifications, and experience, so the actual starting pay may be above or below this range. At T-Mobile, employees in regular, non-temporary roles are eligible for an annual bonus or periodic sales incentive or bonus, based on their role. Most Corporate employees are eligible for a year-end bonus based on company and/or individual performance and which is set at a percentage of the employee’s eligible earnings in the prior year. Certain positions in Customer Care are eligible for monthly bonuses based on individual and/or team performance, while Retail and Business Sales roles are eligible for monthly or quarterly sales incentives. And since we are ALL owners, EVERY employee at T-Mobile is eligible for an Annual Stock Grant. For information about T-Mobile’s amazing benefits, check out https://careers.t-mobile.com/culture-and-benefits/

Never stop growing!
T-Mobile 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.

If you’d like to receive more information about careers at T-Mobile, sign up for the T-Mobile Talent Community today! https://www.tmobile.careers/profile/join/

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, 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.