Sr Software Engineer, iOS

T-Mobile

Closes in 4 days

Quick summary

Work type: On-site
Location: Bellevue, WA
Salary: $113,600–$205,000 / yr
Posted: 3 days ago
Closes: Jun 23, 2026 (soon)
Nearby: 99+ roles within 25 mi

Market check

Salary context

Competitive pay

How this pay compares to similar roles

Similar $178k

This role $159k

$102k most similar roles pay here $225k

This role pays less than 60% of similar roles. Most pay $142,400–$213,000 — the shaded band above. At the midpoint, this role pays about $159k versus about $178k for comparable roles.

Based on 240 similar postings.

Employer

About T-Mobile

T-Mobile US is the second-largest wireless carrier in the United States, providing wireless voice, messaging, and data services under the T-Mobile and Metro by T-Mobile brands. Industry: Wireless Telecommunications

T-Mobile currently has 28 open roles on FindRole.

Listed pay typically runs $113,600–$186,900 across 27 roles with salary data.

Most-posted roles

View all roles at T-Mobile

At a glance

TL;DR · Sr Software Engineer, iOS

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As a Sr. Software Engineer at T-Mobile, you will join the team behind the T-Life app, focusing on designing and developing high-quality iOS features using Swift and modern Apple frameworks. Your day-to-day responsibilities include implementing scalable mobile software solutions, integrating RESTful APIs and AI-powered backend services, and ensuring quality through unit testing and performance optimization. You will collaborate with cross-functional teams to build reliable features, mentor junior engineers, and contribute to architectural decisions that enhance customer experience. Proficiency in Swift, UIKit/SwiftUI, and experience with MVVM or Coordinator patterns are essential, along with knowledge of AI-enabled services and CI/CD tools. This role supports T-Mobile’s mission to deliver innovative mobile experiences at scale.

Skills

Swift UIKit SwiftUI RESTful APIs Git CocoaPods Swift Package Manager MVVM MVC Coordinator CI/CD Fastlane Xcode Cloud TestFlight Instruments MetricKit GitHub Copilot ChatGPT Enterprise Claude

What you'll do

Develop scalable iOS features using Swift and modern Apple frameworks.
Integrate RESTful APIs and AI-powered backend services for personalized experiences.
Lead architectural decisions to ensure secure, maintainable mobile application design.
Create clear documentation for software code and system designs for knowledge sharing.
Mentor junior engineers and promote engineering best practices across teams.

What we're looking for

Bachelor's Degree in Computer Science or related field with 4+ years of technical engineering experience.
Proficient in Swift and experienced with UIKit/SwiftUI for developing production-grade iOS interfaces.
Strong understanding of iOS app lifecycle, memory management (ARC), performance optimization, and RESTful API integration.
Familiarity with Git-based workflows, collaborative code review processes, and dependency management tools like CocoaPods or SPM.
Experience mentoring junior engineers and contributing to architectural decisions for scalable, secure mobile application design.

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