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James F
@james_frankli2
From Design to Deployment, Your Complete Mobile App Developer
United Kingdom
French, German, Spanish, English
About me
Hi, I’m James a professional Flutter developer and mobile app expert with years of experience creating fast, secure, and visually stunning apps for Android and iOS. I specialize in cross-platform Flutter development, combining elegant UI/UX design, powerful backend integration, and seamless performance. Whether you need a dating app, crypto wallet app, fitness app, healthcare app, or delivery app, I’ll turn your idea into a world-class mobile solution, from concept to launch. I also offer app maintenance, API integration, bug fixing, and app store submission to ensure lasting success.
Skills
James F
Offline •
Average response time: 1 hour
See my services
Cross-Platform Development
I will do mobile app development, flutter app, dating app, crypto wallet app
Cross-Platform Development
I will build flutter app, fintech app, crypto wallet app, payment app, bank app
Portfolio
Work experience
Senior Flutter Mobile App Developer
Franklin Labs • Freelance
Jun 2024 - Oct 2024 • 4 mos
At Franklin Labs, I led the full lifecycle development of cross-platform mobile applications using Flutter, delivering production-ready Android and iOS apps from concept to store launch. I worked closely with founders, product managers, and designers to translate business ideas into scalable, high-performing mobile solutions. My responsibilities included app architecture planning, state management selection, UI/UX implementation, backend integration, and performance optimization. I integrated REST APIs, Firebase (Authentication, Firestore, Cloud Functions), push notifications, analytics, and third-party SDKs to support real-time functionality and user engagement. I placed strong emphasis on clean code, maintainability, and smooth user experience, ensuring apps performed reliably across devices. Projects spanned dating apps, fintech wallets, healthcare platforms, and on-demand services. I also handled app store deployment, compliance, and post-launch improvements, helping products achieve stable releases and long-term growth.
4 Reviews
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
1-4 out of 4 Reviews
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Most relevant
feranmisamuelxi
Repeat Client
Canada
Working with this seller was an excellent experience from start to finish. Communication was clear and professional, deadlines were met, and the quality of work exceeded my expectations. They truly understood the project goals and delivered solutions that added real value. I highly recommend this seller...
Helpful?
coltengoyette
United States
Working with James F has been an exceptional experience from start to finish. I ordered a mobile app development service, and he delivered far beyond my expectations. His expertise in Flutter—whether it’s building a dating app, crypto wallet app, or any custom solution—is truly impressive. James followed...
Helpful?
feranmisamuelxi
Repeat Client
Canada
Honestly, I’m really impressed. The seller did a great job on my dating app, everything turned out even better than I expected. Communication was easy, they listened carefully, and made sure every detail was right. You can tell they actually care about the work. I’m really happy with the result and would definitely work with them again.
Helpful?
popkenex
United Kingdom
Working with this seller was an excellent experience! They handled a tangible my dating app project with great professionalism and technical skill. The communication was smooth, they understood exactly what I wanted, and delivered everything right on time. I appreciate how they paid attention to detail...
Helpful?
