Cem S.

Mobile App Developer | MVP Developer - React Native, iOS, Android

𝟕+ 𝐘𝐞𝐚𝐫𝐬 𝐢𝐧 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 & 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 | 𝐌𝐕𝐏 𝐁𝐮𝐢𝐥𝐝𝐢𝐧𝐠 & 𝐒𝐨𝐟𝐭𝐰𝐚𝐫𝐞 𝐄𝐧𝐠𝐢𝐧𝐞𝐞𝐫𝐢𝐧𝐠. | 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐀𝐜𝐫𝐨𝐬𝐬 𝟓 𝐂𝐨𝐧𝐭𝐢𝐧𝐞𝐧𝐭𝐬 | 𝐓𝐨𝐩-𝐑𝐚𝐭𝐞d | 𝐒𝐢𝐥𝐢𝐜𝐨𝐧 𝐕𝐚𝐥𝐥𝐞𝐲 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 | 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬 | 𝐀𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 | 𝐅𝐥𝐮𝐞𝐧𝐭 𝐢𝐧 𝐄𝐧𝐠𝐥𝐢𝐬𝐡  Hi there! I’m a Top Rated mobile app developer with 1300+ hours of experience developing high-performance mobile and web applications. I specialize in scalable, user-friendly, and efficient solutions that help businesses grow. I have extensive experience in mobile development, ensuring smooth performance, intuitive UI, and strong backend integrations. Whether it’s native iOS and Android development (Swift, Kotlin, Java) or cross-platform solutions (React Native, Flutter), I create fast, secure, and scalable apps. Alongside mobile expertise, I also build modern front-end web applications with React.js and Next.js, delivering seamless experiences across platforms. Industry-Leading Experience: I have worked as an iOS developer for CepteŞok and İstegelsin, two of the largest grocery applications in Turkey, as well as Hopi, the country’s biggest loyalty app. These apps have over 1 million+ users, and I played a key role in developing and optimizing their mobile experiences for scalability, performance, and seamless user interactions. Additionally, I bring strong expertise in App Store and Google Play Store management, handling App Store submissions, compliance, reviews, and updates. I also specialize in Google Ads integration, ensuring effective in-app monetization strategies that maximize user engagement and revenue. Why Work With Me? - Expert in Mobile & Web Development – Deep knowledge of frameworks, UI/UX principles, and performance optimizations - Performance-Driven – I optimize apps for speed, security, and scalability - Business-Oriented Approach – I align development with your goals to maximize impact - Strong Communication – Clear updates, efficient collaboration, and on-time delivery - App Store & Play Store Expertise – Seamless app submission, compliance, and optimization for better visibility - Google Ads & Monetization – Integrated ads, in-app purchases, and revenue strategies Mobile Development Expertise • iOS: Swift, SwiftUI, UIKit, CoreData, Combine • Android: Kotlin, Jetpack Compose, Java, Room Database, LiveData • Cross-Platform: React Native, Flutter • Mobile Optimizations: Animations, Lazy Loading, Memory Management, Battery Optimization • App Store & Google Play Submission: Submission, compliance handling, review management, ASO (App Store Optimization) • Google Ads & Monetization: In-app advertising (AdMob, Google Ads SDK), in-app purchases, user retention strategies • Third-Party SDKs & APIs: Firebase, Supabase, Google APIs, Payment Integrations Front-End Development Expertise • Web Development: React.js, Next.js, TypeScript • UI Frameworks: Tailwind CSS, Material UI, Styled Components • Performance Optimizations: Server-side rendering (SSR), lazy loading, caching strategies • API Integration: RESTful APIs, GraphQL Tech Stack & Expertise - Mobile Development: Swift (SwiftUI), Kotlin (Jetpack Compose), Java - Cross-Platform: React Native, Flutter - Front-End Development: React.js, Next.js, TypeScript - Backend & Databases: Firebase, Supabase, Node.js - Cloud & DevOps: AWS, Google Cloud, Docker, Kubernetes - UI/UX Collaboration: Figma, Zeplin Projects I’ve Worked On Health Monitoring App – Developed a mobile application for tracking and analyzing health data. Full-Stack Gym Membership App – Built a complete mobile and backend solution for gym management, integrating payment systems and user tracking. Chat Application – Implemented a secure, real-time messaging platform with modern UI features. VPN App – Designed and developed a high-speed, secure VPN service with optimized performance. Browser Apps – Created advanced mobile applications with built-in web browsing capabilities and custom features. Web Dashboards & Frontend Apps – Developed React-based web applications for data visualization and user interactions. App Store & Play Store Optimized Apps – Successfully submitted and managed multiple apps, ensuring compliance and maximum visibility. Ad-Integrated & Revenue-Optimized Apps – Implemented Google Ads SDK & in-app monetization strategies for increased app revenue. Need a high-quality mobile app, web application, or full-stack solution with seamless App Store submission and Google Ads integration? Let’s connect and bring your project to life!