Carlos Borraz

Developed and maintained scalable web applications using React.js for frontend and .NET/Java for backend services. Led CI/CD pipeline development using Google Cloud Build and Kubernetes to ensure rapid and reliable deployments. Led Backend development for multiple platforms, implementing RESTful and GraphQL APIs with Express.js and Nest.js. Designed and deployed scalable backend services using Go, and contributed to web apps with Ruby on Rails. Built and maintained interactive, responsive front-end interfaces using Angular/AngularJS and TypeScript, with MongoDB and PostgreSQL for data storage.

Designed and developed user-friendly front-end interfaces with Angular, React, and Tailwind CSS across client-facing platforms; improved usability and performance with measurable gains. Built high-performance Python back-end services using FastAPI and Django, optimizing API response times through efficient querying and caching. Implemented secure FastAPI microservices with vector search and embedding support (OpenAI, Cohere) for real-time inference. Engineered end-to-end RAG pipelines with LlamaIndex and LangChain for knowledge retrieval and QA enhancement. Built an AI-based live stream classification model and deployed model APIs. Implemented RESTful and GraphQL APIs to support multiple web platforms with secure, scalable data exchange.

Developed blockchain prototypes (token contracts, DeFi settlement workflows, NFT-based loyalty programs) to explore next-generation payment and identity solutions. Authored Solidity smart contracts (ERC-721/1155) with OpenZeppelin RBAC and proxy patterns for upgrades. Implemented crypto-asset workflows and integrations to connect Visa payment systems with Ethereum and other major chains for faster settlement. Designed and maintained decentralized apps on Ethereum (Solidity) and Solana (Rust), enhancing throughput and reliability.