j
john_aos

John A

@john_aos

Mobile App Developer, Flutter, React Native and AI App Expert

United Kingdom
Spanish, English, French, German, Italian, Arabic, Polish
About me
Hello, I'm John, a professional mobile app developer specializing in Flutter, React Native, Android, iOS, and AI-powered applications. I help startups, businesses, and entrepreneurs turn their ideas into high-performing mobile apps that are fast, scalable, and user-friendly. My expertise includes custom app development, hybrid apps, AI integrations, API connections, bug fixing, and app optimization. I focus on clean code, responsive design, clear communication, and on-time delivery. Let's build a powerful mobile app that helps your business grow and stand out in today's competitive market.... Read more

Skills

j
john_aos
John A
Offline • 
Average response time: 1 hour

See my services

Android App Development
I will ai mobile app, app development, mobile app development
From$105 / projectMore details
Cross-Platform Development
I will flutter app development, app development, mobile app dev
From$100 / projectMore details

Portfolio

Work experience

Remote_Care Partners

Senior Mobile App Developer

Remote Care Partners • Freelance

Apr 2026 - Present • 2 mos

Developed high-performance mobile applications using Flutter and React Native for startups, businesses, and entrepreneurs. Built cross-platform apps for Android and iOS with clean, scalable, and maintainable code. Integrated AI features such as chatbots, recommendation systems, image recognition, and automation tools into mobile applications. Connected third-party APIs including payment gateways, authentication systems, maps, push notifications, and cloud services. Optimized app performance, fixed bugs, improved UI/UX, and ensured smooth user experiences across devices. Collaborated with clients throughout the development lifecycle, from project planning and UI implementation to testing, deployment, and post-launch support. Successfully delivered projects on time while maintaining high coding standards and excellent client satisfaction. Key Technologies: Flutter, React Native, Dart, JavaScript, Firebase, REST APIs, AI Integration, Android, iOS, Git, Google Play Console, App Store Connect.