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Leonardo Gayon
Looking for a jobIngeniero de Software Freelance
Backend software engineer building Java and Spring Boot microservices; solved Google Gemini API overuse with cached responses.
ColombiaIngeniero de Software Freelance at Clientes Confidenciales
About
At Empresa LLC de EE. UU., I took features from scoping through deployment and support for a production application built with Node.js and Express.js. I also supported PostgreSQL in production, investigating data issues and writing targeted SQL fixes.
I resolved overuse of Google Gemini API keys by caching responses to recurring requests in localStorage. I worked with Claude Code for code review and technical research, and developed with TypeScript and React alongside the backend.
At Tendencia Pixel, I designed and delivered REST microservices with Spring Boot and PostgreSQL. I implemented JWT authentication between services and containerized them with Docker.
Across freelance and earlier engineering work, I built Java and Spring Boot services, configured Azure DevOps CI/CD pipelines, and deployed services to Azure Container Apps. I also optimized SQL queries and connection pooling, reducing query times by 20%.
Experience
Ingeniero de Software Freelance
Desarrollo proyectos de software pequeños para clientes privados bajo acuerdos de confidencialidad.
Ingeniero de Software (Contratista)
Llevé funcionalidades de punta a punta en una aplicación en producción con Node.js/Express.js, incluyendo alcance, diseño, implementación, despliegue y soporte. Resolví el sobreconsumo de las API keys de Google Gemini mediante caché local de respuestas recurrentes.
NodeJSExpressJSPostgreSQLTypeScriptReactClaude CodeGoogle Gemini APICacheSQLREST
Ingeniero de Software
Diseñé y entregué microservicios REST en Spring Boot con PostgreSQL, implementé autenticación JWT, contenericé servicios con Docker y refactoricé módulos centrales aplicando SOLID y Clean Code.
Spring Boot
Education
Corporación Universitaria Iberoamericana
Completed a degree in Software Engineering, with professional certification from COPNIA. Worked under contract throughout the program.
Henry
Completed a course on Cybersecurity Fundamentals.
Udemy
Completed a course on Scrum Fundamentals, Agile Methodology, and Project Management.
Universidad Francisco de Paula Santander
Completed six semesters of Systems Engineering, with credits transferred to Software Engineering.