Software Engineer - iOS

T-Mobile • Bellevue, WA

6d

About The Position

At T-Mobile, we invest in YOU! Our Total Rewards Package ensures that employees get the same big love we give our customers. All team members receive a competitive base salary and compensation package - this is Total Rewards. Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches. That’s how we’re UNSTOPPABLE for our employees! Are you ready to join the Un-carrier movement? We are seeking a highly skilled and motivated iOS Software Engineer to join the team powering the T-Life app—T-Mobile’s flagship mobile experience. In this role, you will contribute to the design, development, and delivery of high-quality, performant, and AI-enabled Android features that reach millions of users. The Software Engineer is essential for designing, implementing, and deploying scalable software solutions that meet customer requirements and support high availability environments. The role involves collaborating with engineering teams to develop software components using modern technologies and architectural patterns. This position requires independent development of full software stacks and understanding system protocols, data flows, and technology interactions. Success is measured by the ability to deliver technical solutions, produce clear documentation, and contribute to technology strategy and innovation. The work impacts the organization by enabling advanced software systems that improve operational efficiency and support business goals.

Requirements

• 2-4+ years Technical engineering experience. (Required)
• Experience developing iOS applications using Swift, Objective-C, SwiftUI , and the iOS SDK
• Bachelor's Degree plus 3 years of related work experience OR advanced degree with 1 year of related work experience OR combination of education and experience deemed equivalent (Required)
• Acceptable areas of study include Computer Science or Engineering (Required)
• Communication (Required)
• Customer Service (Required)
• Analytics (Required)
• Technical Writing (Required)
• At least 18 years of age
• Legally authorized to work in the United States

Nice To Haves

• Familiarity with architectural patterns such as MVC, MVVM, Coordinator, or VIPER.
• Experience integrating RESTful APIs, Core Data, and third-party SDKs.
• Understanding of CI/CD pipelines and version control systems such as GitLab.
• Experience working with observability tools such as Firebase or similar monitoring platforms.
• Exposure to AI-powered services, LLM-backed APIs, personalization engines, or intelligent mobile workflows.
• Knowledge of secure communication practices including OAuth and encryption standards.
• Experience building and maintaining consumer-facing mobile applications in production environments.

Responsibilities

• Develop software solutions that support engineering projects and meet customer requirements, including design and development of native iOS features using Swift, Objective-C, and the iOS SDK.
• Collaborate with technical teams including product, design, backend, QA, and AI engineering teams to deliver effective technical solutions and continuously learn new technologies .
• Create clear documentation for software code, system designs, and business requirements, including architectural decisions and API integrations.
• Contribute to technology strategy by understanding current mobile technologies, iOS platform evolution, and supporting business goals through scalable and modular application design.
• Present innovative ideas to improve systems, processes, or services based on industry research, including opportunities to enhance mobile experiences through AI-enabled capabilities such as personalization, recommendations, and conversational flows.
• Integrate RESTful APIs and backend services, ensuring secure, performant, and reliable mobile experiences.
• Contribute to quality practices including unit testing, code reviews, CI/CD participation, and performance optimization across devices and OS versions.

Benefits

• Employees enjoy multiple wealth-building opportunities through our annual stock grant, employee stock purchase plan, 401(k), and access to free, year-round money coaches.
• 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.
• medical, dental and vision insurance, a flexible spending account, 401(k), employee stock grants, employee stock purchase plan, paid time off and up to 12 paid holidays - which total about 4 weeks for new full-time employees and about 2.5 weeks for new part-time employees annually - 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, and voluntary long-term care insurance.
• eligible employees can also receive mobile service & home internet discounts, pet insurance, and access to commuter and transit programs!

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level