Julien Haegman

Creation of the SortiPéi app, designed to list several thousand events in Réunion Island. Full technical leadership of the project, from architecture to production: - Cross-platform mobile app (Expo / React Native) managing several thousand users - Secure, powerful, tested, and stable API (Node.js) - Back-office (React) - Website with SEO optimization - Deployment and infrastructure management - Automated statistical reports Project management in collaboration with two co-founders: - Requirement analysis - Design - Wireframes, UI and UX design thinking - Development - Deployment - Client follow-up, communication, business management - Continuous improvement Results: - An app that gained 2,000 users within one week and is evolving to become a major tool in the cultural and social life of Réunion Island - An internal management interface and automation tools that significantly reduce the workload of event research

Full-stack and mobile development across multiple projects in the video streaming and e-commerce sectors. I developed numerous features both independently and within a team, covering every step of the process: requirements definition, prototyping, backend, frontend, and mobile development, optimizations, security, testing, and delivery. I worked on a client back-office, a client video player, an Android/iOS streaming app, and a Remix application integrated with Shopify. - Fullstack: Remix - Frontend: React, Redux, RxJS - Backend: Node.js, MongoDB - Mobile: React Native - Shopify app development - Atomic Architecture - CQRS Architecture - Clean Architecture - Domain-Driven Design - Functional programming (Effect / fp-ts) - External integrations (Google / Meta) - Material UI, Styled Components - Automated testing Result: A modern, high-performance tool suite enabling sellers to showcase their products through live video to thousands of customers.

Development of the OddZone sports betting mobile app and backend management interface, built to handle tens of thousands of users. I personally managed all stages of development: software architecture, task management, feature development, bug fixes, maintenance, security, testing, and optimization. Mobile app built with React Native, backend with Symfony 5 and API Platform, and admin interface with Angular 12. Result: An app that won over thousands of users and attracted the attention of major players in the entertainment and sports industry.

Resumed development of a human resources management platform within a web development company. Mission carried out remotely and renewed multiple times. Application built with Angular 4 and a Symfony 3 REST API. Result: A platform enhanced with numerous new features essential to the HR domain.

Development of a neuroimaging exchange and classification platform as part of neurocognition research. Updated an existing application, added new features, redesigned the user interface, strengthened security, and deployed on a web server. Technologies used: • HTML, CSS, JavaScript, PHP • Materialize, JQuery, AJAX • Symfony 4, MySQL Result: A simple tool to centralize and analyze neuroimaging data, helping advance medical research.

Conceiving a new Intranet website for a city hall while enhancing the current technologies. • Analysing and reviewing the needs of every agent • Proposing new designs and structures for the website • Adapting a CMS in accordance with the needs • Building up User eXperience for the users