Senior iOS Engineer, T-Mobile

T-Mobile

Location:
United States, Bellevue

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

113600.00 - 205000.00 USD / Year

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Job Description:

The Senior iOS Engineer will work with a team of mobile developers to design, implement, and maintain high-quality iOS applications that meet business and customer needs. The Senior Engineer will focus on creating scalable, maintainable, and secure mobile solutions that enhance customer experiences within T-Mobile's app ecosystem. This role requires a deep understanding of iOS development, including modern architecture patterns, testing strategies, performance optimization, and the ability to collaborate effectively across teams. The ideal candidate will bring technical expertise, leadership, and a passion for continuous learning to drive impactful solutions.

Job Responsibility:

Design, develop, and maintain iOS applications using modern architecture patterns such as MVVM or MVC
Perform code reviews to ensure high-quality, maintainable, and secure code, while mentoring junior engineers
Collaborate with cross-functional teams including Product, Design, QA, and Backend engineers to deliver seamless experiences
Implement CI/CD pipelines for automated testing, building, and deployment
Ensure performance optimization and stability of iOS applications, addressing any critical bugs or crashes
Build and maintain modular, reusable components to streamline app development and improve code maintainability
Integrate third-party SDKs and APIs, ensuring secure and efficient interactions
Implement and enhance analytics tracking to monitor user behavior and app performance
Stay current with iOS platform updates and industry best practices, proposing innovative solutions to improve the app’s architecture and performance
Proactively identify opportunities for refactoring and improving the codebase to increase efficiency and maintainability
Collaborate in agile ceremonies such as sprint planning, retrospectives, and stand-ups to ensure smooth delivery of features
Continuously learn new technologies and advocate for best practices within the team
Contribute to technical documentation, ensuring knowledge is shared across the team
Documenting systems designs, presentations, and business requirements for consumption and consideration at the manager level

Requirements:

Bachelor's Degree Computer Science or Engineering
4-7 years Technical engineering experience
7+ years’ experience building complex applications for the iPhone or iPad using Swift /Objective-C/C++ with the iOS SDK and other frameworks
Expertise in Swift and Objective-C, UIKit and SwiftUI
Strong knowledge of object-oriented programming, basic data structures and asynchronous programming
Experience with iOS app performance and metrics
Thorough conceptual and hands-on knowledge of architectural patterns preferably VIPER
Solid grasp of mobile networking and REST Web Services
Experience in API design, SDK architecture, and mobile software lifecycle development practices
Excellent verbal and written communication skills
At least 18 years of age
Legally authorized to work in the United States

Nice to have:

Communication
Customer Service
Analytics
Technical Writing

What we offer:

Competitive base salary and compensation package
Annual stock grant
Employee stock purchase plan
401(k)
Access to free, year-round money coaches
Medical, dental and vision insurance
Flexible spending account
Paid time off
Up to 12 paid holidays
Paid parental and family leave
Family building benefits
Back-up care
Enhanced family support
Childcare subsidy
Tuition assistance
College coaching
Short- and long-term disability
Voluntary AD&D coverage
Voluntary accident coverage
Voluntary life insurance
Voluntary disability insurance
Voluntary long-term care insurance
Mobile service & home internet discounts
Pet insurance
Access to commuter and transit programs

Additional Information:

Job Posted:
April 25, 2025

Employment Type:

Fulltime

Work Type:

On-site work

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Senior iOS Engineer