Tool rationalization into unified application

Problem: the company used 7 different tools (Excel, Trello, Google Sheets, emails, WhatsApp, a CRM and an invoicing tool) without integration. Solution: development of a unified business application centralising project management, CRM, invoicing and reporting. Stack: React, Node.js, PostgreSQL, sovereign hosting. Result: from 7 tools to 1, 20 hours/week saved, complete activity visibility.