Guillermo Oporto Gumucio

CarOffer | Dallas, TX (Remote)

• Spearheaded feature development for a strategic dealer portal using React, enhancing user experience while optimizing backend performance with .NET and complex SQL Server stored procedures.
• Engineered secure and intuitive user interfaces, ensuring application integrity through comprehensive testing within an Agile framework (Jira, Bitbucket).

Koode | São Paulo, Brazil

• Architected and built a NestJS platform to convert e-books into audiobooks using AI APIs (Gemini, OpenAI), with corresponding frontends in React and React Native.
• Leveraged Google Cloud Functions and Firebase to manage scalable, event-driven backend processes for the mobile application.
• Implemented CI/CD pipelines to automate deployments and managed data across PostgreSQL, SQL Server, and MongoDB.

Villela Brasil Bank | Brazil

• Designed and developed REST APIs and microservices using C#, Node.js, and TypeScript within a scalable Nest.js framework.
• Engineered asynchronous data processing workflows using AWS Lambda and SQS, significantly improving the efficiency of backend tasks.
• Streamlined deployments and improved system reliability using Docker and Azure DevOps, while monitoring performance with Azure Insights.

Confidential | Remote

• Led the development of a sophisticated web platform using Node.js for backend logic and Next.js for a dynamic, SEO-optimized frontend.
• Architected and implemented Server-Side Rendering (SSR) and caching strategies that dramatically improved page load times and application efficiency.

Integra | Remote

• Developed and maintained a global cataloging tool, successfully managing the technology transition from VB.NET to a modern C#/.NET stack.
• Enhanced system performance by designing and implementing optimized SQL Server stored procedures and managing data in Oracle databases.