Leonardo Zillo Monte Xillo

• Scalable Architecture & Development: Conceived and designed the entire company management software from scratch. Implemented a Modern Monolith architecture using PHP with Laravel (MVC), a responsive (mobile-first) design, and adhered to SOLID principles to ensure long-term scalability and maintenance.

• Complex Hardware Integration: Developed backend (PHP) and integration logic for managing NFC cards and hardware systems. This optimized communication, reducing interaction latency by 30% and ensuring the robustness of real-time data flows.

• Database Hardening and Performance: Complete lifecycle management of MySQL/MariaDB databases, including schema design, critical query optimization, and applying security best practices for sensitive data. Improved performance by 40% through advanced indexing, maintaining 99.9% uptime. DevOps and Infrastructure: Responsible for autonomous administration of production Linux servers (Debian/Ubuntu), implementing Docker for containerization, and managing Web Server hardening (Nginx) and CI/CD pipelines (GitLab CI). This reduced deployment time from 3.5 hours to 15 minutes.

• Leadership: Managed and coordinated the entire IT structure and the programming office for a group of two companies.

• Conception/Architecture: Conceived and supervised the complex migration process of critical IT systems and management software from legacy platforms (ACG IBM – mainframe environment) to a new LAMP stack (PHP/MySQL) architecture, ensuring operational continuity.

• Impact: Successfully implemented software solutions that enhanced internal operational efficiency, reducing overall data processing times by approximately 21%.

• Conception/Development: Designed and wrote a custom application for the detection and analysis of aquatic species distribution.

• Technology: Developed using PHP/Laravel for the backend and MySQL for geographical database management.