Damien V.

I am a freelance UX/UI & mobile developer (Android/iOS) specializing in Kotlin Multiplatform (KMP). I am involved from the design of user journeys (UX) and design (UI) to implementation, API integration, and production release on the App Store / Google Play.

Main Project — Kanma (in production since 2022)

Kanma is an event mapping and QR ticketing (ticket purchase/booking) application. It has two facets:

Users: discovery of public events around them, booking/purchase, ticket management (QR code)

Organizers (pro accounts): creation of public events, modification, sales/scan statistics, staff management, ticket scanning, sharing…

Impact: +100 events created and thousands of users and tens of thousands of tickets sold.

Monetization: ticket sales. Continuous maintenance and regular releases.

Technical Approach:

KMP: business logic + network + shared models; native Android UI (Jetpack Compose) and iOS (SwiftUI / UIKit).

Architecture: MVVM, Coroutines/Flow. API integration, network error handling, and delivery to stores (TestFlight / consoles).

Offer:

1) Cross-platform mobile MVP (KMP):

Scoping, UX/UI, Android/iOS implementation, API integration, store launch

2) UX/UI Redesign + Implementation:

Audit, redesign, design system, progressive migration, incremental delivery

3) Product Maintenance & Evolution:

Bug fixes, performance, technical debt, new features, regular releases

Available for remote / hybrid freelance missions.