Daniel L.

• Complete development of the Butter mobile application under Flutter (3.8): modular architecture, design system, local state management (setState, ValueNotifier), and centralized services (restaurants, favorites, auth, analytics).

• Design of a full-app design system: color palette, Inria Sans/Serif typography, reusable components (cards, chips, carousels, sections, buttons).

• Creation of interactive screens: Pinterest-style home feed (2 columns), multi-filter search, restaurant details, favorites, profile, animated onboarding.

• Complete Firebase integration: Auth (Google, Apple, phone, anonymous), Firestore, Storage, security rules, manual indexing for multi-criteria search.

• Performance optimization: local caching (SharedPreferences), image preloading, batch pagination (50 items), dynamic compression, skeleton loaders.

• UX Animations: smooth transitions (AnimatedOpacity, AnimatedSwitcher), animated carousels (PageView + PageController), animated onboarding (TweenController).

• Implementation of analytics (Amplitude) and tracking systems via Firestore (events, metrics, logs).

Development of custom web and mobile solutions for clients in various sectors, including construction and energy. Design of e-commerce applications and websites with React, Next.js, and Node.js, integration of API services. Optimization and management of NoSQL (Firestore, MongoDB) and SQL (MySQL) databases. Automation of data collection and processing via Google Places API and web scraping. Use of Docker for containerization and AWS for deployment. Close collaboration with project teams to ensure the quality and performance of solutions.

Management and optimization of databases for operational and analytical use. Automation of data integration processes with Talend. Real-time stream management via Node-RED and RabbitMQ. Creation of interactive dashboards with Metabase, facilitating decision-making based on reliable data.