Youssef Ben Jaa

SwissKnife IT (Next.js 16, React 19, TypeScript, Firebase, Tailwind CSS): Designed and developed a comprehensive enterprise-grade project management and ticketing platform tailored for IT service companies. Built a full-stack

application using Next.js 16 with App Router and React 19, leveraging both server and client components. Implemented complete ticket management system with workflow from draft to billing, status tracking, priority levels, time tracking with active timers, multi-assignee support, threaded comments with reactions and mentions, and file attachments. Developed invoicing module with automated invoice generation, payment tracking, line item management with tax calculations. Created partner collaboration system supporting multi-company partnerships with customizable permissions and 8-role RBAC. Built advanced document collaboration using Lexical and TipTap rich text editors with markdown, code blocks, and tables support. Integrated Google Workspace including Calendar sync and Drive for document storage. Implemented

LF-Sols Admin (AngularJS, Firebase, Node.js, Express.js, Cloud Functions): Designed and developed a production grade enterprise resource management platform for a construction company specializing in floor covering and soil treatments. Built client-side application using AngularJS with Angular UI Router across 100+ application states.

Developed 29+ Firebase Cloud Functions handling user management, automated email notifications with Nodemailer, image processing and thumbnail generation with Sharp, scheduled database exports, and real-time event triggers. Designed Firestore database schema with 15+ collections, 50+ composite indexes, and security rules based on authentication roles. Implemented complete employee and subcontractor management with activation/deactivation workflows, project lifecycle management with status tracking and profitability analysis. Built work reports system (Bons de Régie) with photo attachments and validation workflows, site reports for detailed project progress tracking, and HR reports for employee documentation. Developed time tracking system (Timbreuse) with clock-in/out and GPS capabilities. Created fleet management module covering vehicles, fuel consumption, maintenance scheduling, and incident reporting. Implemented granular 8-level role-based permission system with real-time geolocation tracking for field employees.

Implemented AI advisor creation system expert personalities, areas, configurations. Developed complete subscription management with three tier pricing, Stripe payment integration, billing portal, and webhook handling for subscription lifecycle events. Created

multi-language internationalization system supporting languages with full RTL support. Built dashboard featuring tracking,

management, campaign tools using API, and management. Deployed with and process management with for