We are seeking a highly skilled and motivated iOS Software Engineer to join T-Mobile. 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. Job 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. Education and Work Experience:2-4 years Technical engineering experience (Required) Experience developing iOS applications using Swift, Objective-C, Swift. UI, 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)Knowledge, Skills and Abilities:Communication (Required)Customer Service (Required)Analytics (Required)Technical Writing (Required)Preferred Qualifications: 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 O - Auth and encryption standards. Experience building and maintaining consumer-facing mobile applications in production environments. Licenses and Certifications:At least 18 years of age. Legally authorized to work in the United States. Travel:Travel Required (Yes/ No): Yes, may require up to 10% travel based on business needs. DOT Regulated:DOT Regulated Position (Yes/ No): No. Safety Sensitive Position (Yes/ No): No Base Pay Range: $92,500 - $166,800 Corporate Bonus Target: 15%The pay range above is the general base pay range for a successful candidate in the role. The successful candidate’s actual pay will be based on various factors, such as work location, qualifications, and experience, so the actual starting pay will vary within 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. To find the pay range for this role based on hiring location, ID=REQ 350451¶dox=1