Designing and developing scalable backend services and APIs using C#, .NET 8, ASP.NET Core, and MySQL for a high-traffic digital marketplace. Built RESTful APIs and transactional systems supporting secure financial workflows, optimized database queries for high-volume transactions, and contributed to cloud deployments and CI/CD pipelines across AWS and Azure.
Learn moreDeveloped backend services and APIs using Python and Django for scalable web applications. Designed optimized MySQL schemas, implemented authentication and authorization systems, and deployed cloud infrastructure using AWS (EC2, S3) to support reliable production environments.
Developed backend APIs and platform services using Node.js, Express, and TypeScript supporting user management and core platform functionality. Improved API performance through optimized queries and backend architecture while maintaining PostgreSQL data reliability.
Migrated legacy applications to a Node.js microservices architecture improving scalability and maintainability. Designed relational and document data models using MySQL and MongoDB and implemented REST APIs supporting internal services and external integrations.
Learn moreFull-stack developer tooling suite: a terminal-first CLI (Commander.js, offline-first, DDD) for frictionless work logging, an Express REST API backend for cloud sync, and a React + Tailwind landing page. The CLI is published to GitHub Packages and follows clean architecture with domain, application, infrastructure, and interface layers.
Cryptocurrency price tracker built with React and .NET through the CoinCap API. Features real-time price updates, historical charts, and a responsive design. The app allows users to search for their favorite cryptocurrencies and view detailed information about each one.
End-to-end feature flag system built as a monorepo: a REST API (Express + Prisma + MySQL + Redis) paired with a zero-dependency TypeScript SDK. Supports environment-scoped flags (dev/qa/prod), Redis caching for low-latency lookups, and a clean SDK API — isEnabled(), getFlag(), listFlags() — ready to drop into any Node.js project.
My name is Diego, but most people call me Santos. I’m a Full Stack Engineer focused on building scalable backend systems and modern web applications using technologies like .NET, Node.js, React, and Angular.
I currently work as a Full Stack Engineer at Chicksgold, where I design and develop backend services, RESTful APIs, and transactional systems for a high-traffic digital marketplace. My work involves building scalable services with ASP.NET Core, MySQL, and cloud infrastructure across AWS and Azure.
Throughout my career, I’ve collaborated with startups across Latin America developing reliable backend systems, optimizing database performance, and implementing scalable architectures using microservices, cloud platforms, and modern JavaScript frameworks.
I’m passionate about clean architecture, performance optimization, and building software that scales. My goal is to create high-quality systems that solve real problems while continuously improving as an engineer.