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Senior Mobile Engineer (Android & iOS) at DaCodes. Work at DaCodes!. We are a firm of experts in high-impact software and digital transformation.. For over 10 years, we’ve been building technology- and innovation-driven solutions thanks to our team of 300+ talented . #DaCoders. , including developers, architects, UX/UI designers, PMs, QA testers, and more. Our team collaborates on projects with clients across LATAM and the United States, delivering outstanding results.. At DaCodes, you’ll have the opportunity to accelerate your professional growth, work on a wide variety of projects across different industries, and contribute to the design, implementation, and optimization of cloud infrastructures.. Our DaCoders play a key role in the success of both our business and our clients’. You’ll be the expert driving our projects, with access to disruptive startups and global brands.. Interested?. As a Senior Mobile Engineer, you will be responsible for the . end-to-end lifecycle. of mobile features—from design and development to release and long-term support. You will work with modern mobile frameworks, integrate complex APIs, implement robust testing strategies, and ensure high standards of stability and performance across platforms.. Key Responsibilities. Design, develop, and maintain mobile applications for . Android and iOS. . . Own end-to-end feature implementation, including architecture, development, release, and support. . Develop production-grade code using . Kotlin / Android Studio. and . Swift / Xcode. . . Maintain and extend existing . Java. and . Objective-C. codebases when required. . Implement . multi-threaded and asynchronous solutions. , following platform-specific concurrency models. . Integrate third-party libraries, SDKs, and mobile services. . Collaborate with backend teams on . API design, cloud integrations, and data flows. . . Ensure high code quality through . unit testing, CI pipelines, and code reviews. . . Debug complex issues using platform-specific debugging and performance tools. . Apply platform-specific . UI/UX best practices. , patterns, and design guidelines. . Actively participate in . Agile/Scrum ceremonies. and cross-functional collaboration.. Required Skills & Experience. . 5+ years. of hands-on experience developing and supporting . mobile applications. for Android and iOS. . Strong experience with . Kotlin. and . Android Studio. . . Strong experience with . Swift. (preferably . Swift 6.0+. ) and . Xcode. . . Familiarity with . Java. and . Objective-C. codebases. . Deep understanding of . Android SDKs. , including AndroidX, DataBinding, ConstraintLayout, and ExoPlayer. . Deep understanding of . iOS SDKs. , including UIKit, SwiftUI, Core Animation, AVFoundation, and Core Graphics. . Experience with . mobile monetization ecosystems. , such as Google Play Store, subscriptions, and Apple Pay. . Strong experience writing . multi-threaded and asynchronous code. on both platforms. . Solid understanding of mobile architecture patterns (e.g., . MVVM. ). . Experience with . CI/CD processes. , unit testing, and mobile testing frameworks. . Experience building applications for . Android TV, Fire TV, Apple TV, or tvOS. . . Familiarity with . cloud-based architectures. and complex API integrations. . Strong debugging, analytical, and problem-solving skills. . Comfortable using . Git. for version control. . . Advanced English. , both written and spoken. . Nice to Have (Bonus Points). Advanced degree in . Computer Science. or a related field. . Experience optimizing . performance and scalability. in large-scale mobile applications. . Company Location: Colombia.