Juan Diego Llano Barrera Email & Phone Number

Santander, Colombia

Málaga, Andalusia, Spain

-Oracle Development: Engineered and optimized Oracle database components, including storedprocedures, functions, packages, triggers, database structures, tables, views, and indexes, ensuringhigh performance and reliability.-Troubleshooting & Bug Resolution: Leveraged deep expertise in diagnosing and resolving complexissues quickly, minimizing downtime and enhancing system stability.-Data Migration: Led and executed data migration projects across multiple environments, ensuringdata integrity and seamless transitions.-Version Control & Deployment: Oversaw version control and deployment processes, utilizing industrybest practices to maintain robust and agile development cycles.-Collaboration & Communication: Actively collaborated with cross-functional teams includingdevelopers, QA analysts, and project managers to deliver high-quality software solutions on time andwithin scope.

Bogotá, Distrito Capital, Colombia

-ERP System Migration: Led the migration of an ERP system from Oracle Forms and Reports to Delphiand PL/SQL, significantly improving system performance and user experience.-Database Optimization: Designed and optimized PL/SQL stored procedures, triggers, functions, andpackages, resulting in enhanced database performance and data integrity.-API Management: Managed and troubleshooted REST APIs, ensuring seamless integration andefficient data exchange between systems.-System Performance Enhancement: Conducted comprehensive performance tuning and systemoptimization, leading to improved operational efficiency and reduced response times.-Collaboration & Communication: Worked closely with cross-functional teams including projectmanagers, developers, and QA analysts to deliver high-quality software solutions.

Bucaramanga, Santander, Colombia

-Desktop Application Development: Designed and developed robust desktop applications using Delphi,with a strong emphasis on creating user-friendly interfaces and efficient data processing capabilities.-Database Development: Advanced database development using PL/SQL, including the creation andoptimization of procedures, jobs, triggers, and views to ensure high performance and data integrity.-System Optimization: Conducted performance tuning and system optimizations to enhance overallapplication efficiency and user experience.-Collaboration & Communication: Collaborated with team members, including developers, QA analysts,and project managers, to ensure the delivery of high-quality software solutions on time and withinscope.