MKFreelancer profile translated to English.
Back to original languageAbout Michel
🧑💻 Freelance Flutter Developer – Fast, high-performance, and custom mobile MVPs
Hello, I'm Michel Klepaczko, a freelance mobile developer specializing in Flutter since 2019. I help startups, SMEs, and project leaders transform their ideas into iOS / Android / Web (PWA) applications, with comprehensive technical and strategic support.
I am also a board member of French Tech Warsaw, involved in the development of the tech ecosystem in Central Europe (
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✅ What I offer:
🔹 Flutter development from A to Z – from idea to deployment
🔹 Product scoping & MVP strategy – to get to the essentials
🔹 Robust & scalable code – testable, maintainable, scalable
🔹 Fast deployment – CI/CD, App Store, Google Play
🔹 Advanced integrations – Firebase, Stripe, notifications, Cloud Functions…
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🛠 Key expertise:
• Flutter / Dart • Firebase • Stripe • CI/CD (Codemagic) • Mobile UX • Bloc / Provider
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🚀 Recent projects:
• Audiobook.pl – audiobooks with DRM, payments, streaming
• StacjaCzytacja (Orlen) – audio reading app for gas stations
• Invoi – mobile invoicing with digital signature and payment
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🌍 My profile:
• Telecom engineer (Polytech’Lille) + marketing (Concordia, Canada)
• Ex-cofounder blockchain startup • Trilingual 🇫🇷 🇵🇱 🇬🇧
• Strong product sense, business culture & agile approach
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💬 Why work together?
I am reliable, proactive, and customer-oriented. I easily integrate into your teams or work autonomously, adapting to your tools and constraints. My goal: to help you release a solid, high-performance mobile app that is useful to your users.
📩 Available remotely, in French, English, or Polish. Let's discuss your project!
French
Native or bilingual
English
Fluent
Polish
Native or bilingual
Can work on-site
Varsovie (up to 50km)
Experience
- TargetFlutter/Dart developerDIGITAL AND ITJanuary 2023 - Today (3 years and 5 months)Complete development of mobile applications in Flutter/Dart for iOS and Android platforms. End-to-end responsibility for the application lifecycle, from initial planning to publication on the stores.Notable projects:• Audiobook.pl: audio reading application with payment integration, access rights management and cloud synchronization.• StacjaCzytacja (Orlen): mobile solution dedicated to the distribution of audiobooks in gas stations.Key skills: state management with Bloc, Firebase integration (Firestore, Functions, Dynamic Links), CI/CD deployment with Codemagic, App Store & Google Play publication.
- DevyardFlutter/Dart developerJuly 2019 - April 2022 (2 years and 9 months)Development of a mobile application for invoicing and payment management.Responsible for:• Technical architecture,• Flutter front-end implementation,• Firestore database integration,• Deployment automation with Codemagic.Implementation of payment integration via Stripe and PayU. Application successfully deployed on Google Play and App Store.
- InvoiFlutter/Dart developerJanuary 2022 - December 2022 (11 months)Participation in numerous projects for international clients as a freelance Flutter developer.Main missions:• Development of responsive and high-performance user interfaces,• Integration with REST APIs and Firebase services,• Implementation of automated tests and continuous delivery processes.Also responsible for maintenance, functional evolutions and post-launch technical support.
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Education
- Master of science.Politech'Lille2002Master of science.
- Specialisation in Marketing and ManagementConcordia University2002Specialisation in Marketing and Management