Rui Codex is a Belgian software engineering company, founded in 2026. We design, build and run custom software, AI automation and system integrations for businesses, and we publish our own mobile apps and games: 25 games and 14 apps are live on Google Play. Typical work: web applications, portals and REST APIs in C#/ASP.NET Core; workflow automation and AI agents with n8n and large language models; connections between ERP, accounting, e-commerce and CRM systems; and cross-platform mobile apps with Flutter. We work on site in Belgium and the Benelux, and deliver projects remotely across Europe. Rui Codex was founded by Selman Altinay, a software engineer with more than 12 years of experience and over 200 delivered projects in his career. Case studies, products and contact: https://ruicodex.com