Freelancer profile translated to English.
Back to original languageAbout Valentin
I am a mobile developer specializing in Kotlin, Android, and Kotlin Multiplatform.
I assist companies and startups in creating and evolving mobile applications, from technical design to production on Google Play and the App Store 📱
I primarily work on native Android (Kotlin, Jetpack Compose) and Kotlin Multiplatform to develop reliable, performant, and maintainable applications.
I can also work on existing Android applications in Java/XML (legacy), for maintenance, evolution, or migration to modern technologies.
I also have a good understanding of the iOS ecosystem. I have already developed and published several iOS applications (Swift), which allows me to work on topics related to iOS integration, build preparation, and App Store publication.
I can notably assist you with:
⚙️ Native Android Development (Kotlin, Jetpack Compose)
🔗 Kotlin Multiplatform Applications
🌐 REST API Integration and Development
🏗 Mobile Architecture and Technical Choices
🚀 Production on Google Play and App Store
In parallel to my missions, I also develop my own SaaS products, which gives me a product vision and a good understanding of real-world production constraints.
👉 If you are looking for an Android / Kotlin Multiplatform developer to create or evolve your mobile application, I would be delighted to discuss it with you.
French
Native or bilingual
English
Fluent
Can work on-site
Nantes (up to 50km)
Experience
- ForgedFounder & DeveloperSOFTWARE PUBLISHINGFebruary 2026 - Today (6 months)Nantes, FranceDesign and development of a web and mobile SaaS for functional fitness coaches. Mobile application developed in Kotlin Multiplatform / Compose Multiplatform, backend in Kotlin Ktor, and frontend in Next.js. Infrastructure setup, PostgreSQL database, and Stripe payment integration.
- TikeasyAndroid & Kotlin Multiplatform Mobile DeveloperSOFTWARE PUBLISHINGMarch 2023 - February 2026 (2 years and 11 months)Nantes, FranceMaintenance and evolution of Android applications (Java, Kotlin) used on the Ardoiz tablet. Development of a new mobile solution in Kotlin Multiplatform, as well as backend APIs in Kotlin Spring Boot.
- FirefitDeveloper and Co-FounderSOFTWARE PUBLISHINGSeptember 2021 - September 2022 (1 year)Nantes, FranceDesign and development of a web and mobile platform for generating personalized bodybuilding programs. Development of Android (Kotlin) and iOS (Swift) applications, Java Spring backend, AWS infrastructure, and MySQL database, with project management from idea to production.
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Education
- Computer Science DegreeCNAM of Cholet2021Algorithmique, programmation orientée objet, structures de données, bases de données SQL, développement logiciel, architecture des systèmes informatiques.