Fussion

Senior App Developer

Fiverr • Freiberufler

Apr 2025 - Present • 1 yr 3 mos

Senior Mobile App Developer with professional experience in building and maintaining hybrid mobile applications using Flutter. Responsible for designing, developing, and optimizing cross-platform apps for Android and iOS from a single codebase. Worked on implementing new features, resolving complex bugs, improving application performance, and integrating REST APIs and third-party services. Experienced in customizing existing mobile applications, enhancing UI/UX, and ensuring smooth functionality across different devices and operating systems. Also involved in troubleshooting production issues, maintaining code quality, and preparing applications for deployment on the Google Play Store and Apple App Store. Focused on delivering scalable, stable, and user-friendly mobile solutions for businesses and startups.

Senior App Developer

Built-in Soft • Vollzeit

Nov 2023 - Feb 2025 • 1 yr 3 mos

Senior Mobile App Developer with professional experience in building and maintaining hybrid mobile applications using Flutter. Responsible for designing, developing, and optimizing cross-platform apps for Android and iOS from a single codebase. Worked on implementing new features, resolving complex bugs, improving application performance, and integrating REST APIs and third-party services. Experienced in customizing existing mobile applications, enhancing UI/UX, and ensuring smooth functionality across different devices and operating systems. Also involved in troubleshooting production issues, maintaining code quality, and preparing applications for deployment on the Google Play Store and Apple App Store. Focused on delivering scalable, stable, and user-friendly mobile solutions for businesses and startups.

Flutter Developer

Coding Solutions 24/7 • Vollzeit

Mar 2020 - Nov 2023 • 3 yrs 8 mos

Senior Mobile App Developer with professional experience in building and maintaining hybrid mobile applications using Flutter. Responsible for designing, developing, and optimizing cross-platform apps for Android and iOS from a single codebase. Worked on implementing new features, resolving complex bugs, improving application performance, and integrating REST APIs and third-party services. Experienced in customizing existing mobile applications, enhancing UI/UX, and ensuring smooth functionality across different devices and operating systems. Also involved in troubleshooting production issues, maintaining code quality, and preparing applications for deployment on the Google Play Store and Apple App Store. Focused on delivering scalable, stable, and user-friendly mobile solutions for businesses and startups.