Yao Kissi

Design and frontend development of Sortiz, an innovative mobile application combining event ticketing and social interactions (group messaging, stories system).

My missions and technical achievements:

Architecture & User Interface (UI/UX):

Development of the interface in React Native / Expo (TypeScript).

Creation of reusable and performant UI components (dynamic checkout modals, complex lists with FlatList, fine-grained layout management and handling of overlap/scroll issues).

Implementation of a "Storiz" system (video/image media player) with management of deletion and chronological display.

E-commerce & Stripe Integration:

Integration of the secure payment tunnel via Stripe (@stripe/stripe-react-native).

Development of the real-time price calculation engine on the client side: dynamic VAT management, tiered platform fee calculation, and management of stock limits based on ticket categories (Standard, VIP, etc.).

Social & Real-Time Features (Supabase):

Integration and consumption of Supabase services (Authentication, database queries).

Implementation of a real-time group messaging system for event participants.

Processing and formatting of complex data (Optimized SQL views, intelligent sorting of past/upcoming events, query security).

Geolocation & Native Interactions:

Use of expo-location for nearby activity search and reverse geocoding.

Implementation of Deep Linking to smoothly redirect the user to Google Maps or Apple Maps from the exact event address.

Interaction with backend REST APIs (Node.js) for user profile and booking cancellation management.

Technical Stack: React Native, Expo, TypeScript, NestJs, Stripe, Supabase, REST APIs, Git/GitHub, Expo AV (Video), Expo Location.