Senior Mobile App Developer (React Native / Flutter / Kotlin / Swift)

We are looking for an experienced Mobile App Developer to join our team and help build high-quality mobile applications for Android and iOS platforms. The ideal candidate should have strong expertise in React Native, Flutter, Android development using Kotlin, and iOS development using Swift. You will be responsible for developing, maintaining, and optimizing mobile applications while ensuring excellent performance, security, and user experience. Responsibilities Develop and maintain cross-platform mobile applications using React Native and Flutter. Build native Android applications using Kotlin. Build native iOS applications using Swift. Collaborate with UI/UX designers and backend developers. Integrate REST APIs and third-party services. Optimize application performance, scalability, and security. Debug and resolve technical issues. Participate in code reviews and development planning. Ensure applications meet App Store and Google Play Store guidelines. Required Skills Must Have React Native Flutter Android Development (Kotlin) iOS Development (Swift) REST API Integration Git & Version Control Firebase Mobile App Architecture State Management (Redux, Provider, Bloc, etc.) Nice to Have CI/CD for Mobile Apps Push Notifications Payment Gateway Integration Google Maps Integration App Store & Play Store Deployment AI API Integration (OpenAI, Gemini, Claude, etc.) Experience Required 3+ years of mobile app development experience. Proven portfolio of Android and iOS applications. Experience publishing apps to Google Play Store and Apple App Store. Strong understanding of mobile UI/UX best practices. Project Type Long-Term Opportunity Full-Time / Part-Time (Depending on Availability) Remote Screening Questions How many years of experience do you have with React Native? How many years of experience do you have with Flutter? How many years of experience do you have with Kotlin? How many years of experience do you have with Swift? Share links to your best Android and iOS applications. Have you published apps on the App Store and Google Play Store? Have you integrated Firebase, payment gateways, or push notifications? Are you available for long-term collaboration? What to Include in Your Proposal Portfolio links GitHub profile (if available) Resume/CV Relevant mobile applications you've built Availability and hourly rate Budget Please submit your hourly rate and relevant experience. We are looking for a developer who can deliver high-quality, scalable mobile applications and become a long-term part of our development team.