Backend
Systems Engineer

Gabriel Esteban Rodriguez Delgado ;

I design systems that scale. Currently building at Horizon.gh and Crescendo Digital.

View My Work → Get In Touch

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Featured Projects

A selection of systems I've engineered. Each represents deep focus on scalability, reliability, and architectural clarity.

Renta

ACTIVE

.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
Project details → GitHub → Demo →

Amán Rules Engine

ACTIVE

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)
Project details → GitHub → Demo →

ZitaSmart

ACTIVE

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
Project details → GitHub → Demo →

TinkerSet

ACTIVE

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
Project details → GitHub →
View all projects →

About Me

Gabriel Rodriguez
Download CV ↓

I'm a Backend Software Engineer and Tech Lead with 5+ years building production systems in C#/.NET — from multi-tenant booking platforms to distributed microservices handling contracts, payments, and reservations at scale. I've progressed from individual contributor to leading engineering teams, taking ownership of architecture decisions, service design, and end-to-end backend delivery.

Currently I co-found and lead the technical direction of Horizon.gh, where I design and build products like ZitaSmart (a multi-tenant SaaS booking platform) alongside specialized ERP and yacht management systems. I also build AI-powered backend automation at Crescendo Digital, integrating LLM workflows into omnichannel customer systems across Facebook, Instagram, SMS, and WhatsApp.

My work is driven by a deep interest in system design — distributed workflows, event-driven patterns, performance bottlenecks, and translating complex business requirements into clean, maintainable code. I enjoy building things that users genuinely love and engineers are proud to work on.

5+
Years Building
25+
Projects Delivered
5+
Languages
∞
To Learn

Core Focus Areas

Backend

C# / .NET ASP.NET Core EF Core Go Python FastAPI

Architecture

Clean Architecture CQRS DDD Microservices Event-Driven Saga Pattern

Cloud & Data

PostgreSQL RabbitMQ Docker Azure GitHub Actions

Frontend & AI

TypeScript React / Next.js LLM Integration Prompt Engineering

Let's Build

Whether you're exploring backend infrastructure, scaling challenges, or just want to chat about distributed systems—let's connect.

gabriel.rodriguezest@gmail.com
GitHub → LinkedIn →

Currently available for consulting & full-time roles