Senior Native Mobile Developer (iOS + Android)

We are looking for a Senior Native Mobile Developer based in Latin America to join a growing technology team building an innovative entertainment accessibility platform. The mobile application synchronizes translated audio with movies and other live entertainment experiences, helping Spanish-speaking audiences enjoy content in their preferred language. You will develop and maintain native iOS and Android applications using Swift and Kotlin. This is not a cross-platform role; strong production experience with both native ecosystems is essential. This is a full-time, long-term contract with an initial three-month trial period. You will collaborate closely with a Florida-based client and an English-speaking, distributed team, so reliable working-hours overlap and clear communication are important. Responsibilities Develop, enhance, and maintain native iOS and Android applications using Swift and Kotlin. Deliver reliable mobile experiences for a large and active production user base. Implement and maintain mobile security features, including device and application integrity checks, secure credential storage, biometric authentication, and certificate pinning. Build and optimize location-based functionality using iOS and Android geo-fencing capabilities. Diagnose production issues and improve application performance, stability, and security. Contribute to technical decisions, architecture discussions, code reviews, and release planning. Collaborate closely with the Head of Technology and other mobile developers. Communicate progress, risks, and technical decisions clearly during regular team calls. Write clean, maintainable, well-tested code and contribute directly to implementation without relying excessively on AI-generated solutions. Support applications throughout their full lifecycle, from development and testing to deployment and ongoing maintenance. +6 years of professional mobile development experience. Strong hands-on experience with native Swift for iOS and native Kotlin for Android. Proven experience shipping and maintaining production applications with large active user bases. Practical mobile security experience with technologies such as: Apple App Attest and DeviceCheck Google Play Integrity API Secure Enclave and Android Keystore Biometric authentication Certificate pinning Experience implementing geo-fencing with CLLocationManager and the Android Geofencing API. Solid understanding of mobile architecture, application lifecycle, performance optimization, testing, and release processes. Bachelor’s degree in Computer Science or a related field. Advanced English communication skills; the team’s primary working language is English. Based in Latin America with availability for meaningful overlap with Florida business hours. Experience with entertainment, media synchronization, accessibility, audio, or location-aware applications is beneficial but not required. Remote work from Latin America. Collaboration with an established business and an experienced international engineering team. Opportunity to work on a distinctive product that makes entertainment more accessible to Spanish-speaking audiences. Meaningful ownership of production applications used by an active customer base. Direct access to technology leadership and involvement in important technical decisions.