Renta
.NET 9.0 Web API for premium rentals (cars, yachts) and event ticketing with QR tickets, Stripe payments, and multimedia management.
.NET 9 FastEndpoints EF Core PostgreSQL Stripe Cloudinary JWT Serilog
Backend
Systems Engineer
Gabriel Esteban Rodriguez Delgado ;
I design systems that scale.
Currently exploring AI infrastructure and backend optimization.
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Featured Projects
A selection of systems I've engineered. Each represents deep focus on scalability, reliability, and architectural clarity.
Amán Rules Engine
Full-stack rules authoring & eval platform: React + Next.js UI with AI natural-language to AST conversions, plus a high-performance Go evaluator.
Next.js React TypeScript Go PostgreSQL pgx chi sqlc Gemini (LLM)
ZitaSmart
Multi-tenant SaaS booking platform for service-based businesses (salons, clinics, consultants). Manage appointments, workers, services, and subscriptions.
Next.js React TypeScript Tailwind CSS .NET Core PostgreSQL EF Core JWT Cloudinary
TinkerSet
Desktop/web application for exploring and organizing files through configurable rules and LLM assistance. React+Tauri UI with FastAPI backend for processing and action execution.
Python FastAPI TypeScript React Zustand Tauri Rust Pydantic
About Me
Im a Backend Engineer focused on building scalable, reliable systems with clean architecture and strong performance characteristics. I have hands-on experience developing production-grade APIs using .NET and PostgreSQL, where I have worked on optimizing queries, improving system efficiency, and implementing complex business logic. I enjoy creating products that satisfy clients—not just making something useful, but building applications that users genuinely love.
My work is driven by a deep interest in system design and backend architecture, with a focus on creating solutions that are not only useful but also scalable and easy to maintain. I am particularly interested in designing services that scale effectively while remaining maintainable.
Currently, I am expanding my skill set toward AI-powered applications, combining backend engineering with modern AI capabilities to build smarter systems. I enjoy learning by building, continuously refining my approach, and working on projects that push me to think like an engineer, not just a developer.
3+
Years Building
25+
Projects Delivered
5+
Languages
∞
To Learn
Core Focus Areas
Backend Architecture Distributed Systems Database Design .NET Go TypeScript Python PostgreSQL Microservices API Design Performance Optimization
Let's Build
Whether you're exploring backend infrastructure, scaling challenges, or just want to chat about distributed systems—let's connect.
Currently available for consulting & full-time roles