d
dieter_engel

kiristian

@dieter_engel

Mobile App Developer iOS, Android, Flutter and FlutterFlow specialist

Germany
German, English, Spanish, French
About me
I’m a Mobile App Developer helping startups, businesses, and founders turn ideas into reliable iOS and Android apps. I specialize in Flutter, FlutterFlow, SwiftUI, and AI mobile app development, with API integration, Firebase, Supabase, authentication, payments, push notifications, and app deployment. Whether you need an MVP, business app, AI solution, or existing app fixed and improved, I focus on clean UI, smooth performance, and scalable solutions. Let’s turn your idea into a powerful app today ... Read more

Skills

d
dieter_engel
kiristian
Offline • 
Average response time: 1 hour

See my services

Android App Development
I will mobile app development android app ios app development as mobile app developer
From$100 / projectMore details
Cross-Platform Development
I will do mobile app development ios android app as flutter app developer for ai app
From$100 / projectMore details

Work experience

Fiverr

Mobile App Developer

Fiverr • Freelance

Jan 2021 - Present • 5 yrs 7 mos

Developed and delivered modern iOS and Android applications using Flutter, SwiftUI, FlutterFlow, and Firebase for startups, businesses, and digital products. Transformed ideas and business requirements into functional, user-friendly mobile experiences with clean and responsive interfaces. Integrated REST APIs, Firebase, Supabase, authentication, databases, payment gateways, push notifications, third-party services, and cloud-based backend solutions. Worked on app architecture, navigation, real-time features, performance optimization, debugging, testing, and deployment. Built scalable solutions designed to provide smooth performance across different devices and screen sizes. Collaborated with clients to understand their goals, identify technical challenges, and deliver practical solutions that solve real business problems. Also supported existing apps by fixing bugs, improving features, optimizing performance, and preparing production ready builds for App Store and Google Play submission.