Freelancer profile translated to English.
Back to original languageAbout Cesar
Senior Backend Developer with 13 years of experience in analysis, design, and development of architectures on Oracle (PL/SQL). Specialist in creating complex business logic and optimizing database objects. With knowledge and skills in JavaScript (Node.js and Express), I seek to integrate my analytical capacity into the development of microservices and the maintenance of critical systems, providing efficient solutions in debugging and data architecture, while contributing to the team's technological stack.
Spanish
Native or bilingual
English
Conversational
Can work on-site
Ciudad de México (up to 50km)
Experience
- PL Sql Quality & Consulting (Asignación CHUBB)DeveloperBANKING AND INSURANCEAugust 2020 - December 2025 (5 years and 4 months)Modernization of Legacy Systems: Migration of business logic from Oracle Forms/Reports to PL/SQL stored procedures and packages to improve performance and maintainability. Data Architecture: Design and maintenance of complex data structures and programmatic logic aligned with strategic business objectives. Performance Tuning: Optimization and refinement of SQL queries and critical processes to reduce response times for reports and transactional systems.
- Oracle EctotecDeveloperEDUCATION AND E-LEARNINGNovember 2018 - July 2020 (1 year and 8 months)• - Development and Maintenance: Programming enterprise applications using Oracle Forms and Reports, ensuring operational continuity of academic systems.• - Database Architecture: Analysis, design, and optimization of PL/SQL objects (packages, procedures, functions, triggers, and views), ensuring data integrity and scalability.• - Performance Optimization (Tuning): Execution of SQL Tuning to improve response times for complex queries and critical system reports.• - Integration and Backend: Management and development of APIs for efficient communication between the application layer and the database (CRUD operations).• - Web Development: Implementation of solutions with JavaScript to add dynamism, interactivity, and improve user experience on university web portals.
- Oracle Grupo Piedra SantaDeveloperEDUCATION AND E-LEARNINGJuly 2017 - October 2018 (1 year and 3 months)• - Development and Maintenance: Programming enterprise applications using Oracle Forms and Reports, ensuring operational continuity of academic systems.• - Database Architecture: Analysis, design, and optimization of PL/SQL objects (packages, procedures, functions, triggers, and views), ensuring data integrity and scalability.• - Performance Optimization (Tuning): Execution of SQL Tuning to improve response times for complex queries and critical system reports.• - Integration and Backend: Management and development of APIs for efficient communication between the application layer and the database (CRUD operations).• - Web Development: Implementation of solutions with JavaScript to add dynamism, interactivity, and improve user experience on university web portals.
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Education
- TSU IN TECHNOLOGIESUniversidad Tecnológica de Nezahualcóyotl2010TSU EN TECNOLOGIAS
- TECNICO EN INFORMATICA. Certificate SCRUM Master CertifiedCECyTEM La Paz2017TECNICO EN INFORMATICA. Certificate SCRUM Master Certified