Available for world-class products

DIEGOBARRERA

Full-Stack Engineer building scalable products with AI and strong architecture

I engineer SaaS platforms and AI-powered systems where performance isn't optional. Focused on creating the next generation of intelligent web applications.

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The FullStack

DIEGO BARRERA.

EngineeringPerformanceProduct Thinking

I specialize in bridging the gap between complex engineering and fluid user experiences.

My approach combines deep technical expertise with a product-first mindset. From crafting high-performance frontends with React and Next.js to architecting scalable backends and deploying autonomous AI agents, I build for scale, speed, and real-world impact.

Capability Stack

Core Technologies

Next.js • React • Node.js • NestJS • TypeScript

Applied Intelligence

AI Agents • RAG Workflows • Prompt Engineering

Cloud Infrastructure

AWS Ecosystem • CI/CD Pipelines • Performance Auditing

Data Architecture

Foundational Data

PostgreSQL • MySQL • MongoDB • Redis

Modern Discovery

Vector Databases • Pinecone • Semantic Search

TL;DR

"Let's ignore the corporate speak for a second: I build cool stuff for the web and the people, making sure the complexity stays where it belongs — under the hood."

View Experience Technical Toolkit

Professional Evolution

EXPERIENCE.

SoftwareEngineer

Software Shop

April 2022 — Present

#React&Framer#PHP/Blade#GitFlow#Arch

Building specialized software for universities and organizations in LatAm.

/Engineered interactive applications using React.js and animations to reduce development time while maintaining high-fidelity visuals.
/Implemented responsive, fluid designs optimized for user experience and SEO.
/Established Git and GitHub practices to modernize the versioning system and collaborated on full-stack architecture discussions.

Execution Detail

WebDeveloper

Freelance

July 2021 — April 2022

#Next.js#PHP/Blade#SEO#Responsive

Bridging speed and scalability for custom products.

/Developed interactive web applications using Next.js and React, incorporating Blade for specialized PHP templating.
/Specialized in fluid responsive designs and SEO best practices to improve site performance and visibility across devices.

SoftwareTechnician

SENA Internship

Jan 2021 — June 2021

#Automation#InventorySystems#PDFEngines

Transforming manual processes into real-time digital machines.

/Chemical Inventory Platform: Built a dynamic tracking system with real-time updates and multi-device PDF access.
/Payroll System: Automated salary adjustments and work hour tracking, ensuring absolute accuracy and efficiency.
/Scheduling: Designed intuitive interfaces to eliminate inefficiencies in appointment management.

Technical Arsenal

SKILLS.

Core Mastery

#TypeScript#NextJs#NestJs#ReactJs#Tailwindcss#NodeJs#PostgreSQL#Prisma#Docker#AWS#DigitalOcean#Git#GITHUB

"This selection represents the core ecosystem where I build today, though I view engineering as a language-agnostic discipline. I don't limit myself to a specific stack; my priority is always selecting the right tool for the challenge, ensuring every decision is driven by performance, scalability, and the project's ultimate impact."

Selected Works

PROJECTS.

Local Marketplace • Beta

CityUbi

CityUbi is a platform that streamlines the search for local products and services. It offers an efficient, fast way for customers to find what they need within their city, with details like location, hours, and payment methods. Direct contact options, such as WhatsApp, Instagram, and email, are available for businesses to connect with customers.

#Next.js#MySQL#Google Maps API

Explore Execution

AI SaaS • Production

cAppi

A comprehensive ecosystem focused on intelligent automation and streamlined operational workflows. cAppi bridges the gap between complex data processing and intuitive user action, leveraging bespoke AI agents to handle the heavy lifting of modern digital management. Built for performance and absolute reliability.

#AI Agents#NestJS#PostgreSQL#Real-time

Explore Execution

Direct Correspondence

LET'S TALK.

Let's build something great together. Whether it's world-class software or or a co-founder for a game-changing idea, I'm all ears.

Based in the digital ether, delivering worldwide. Open for collaborations, freelance engagements, and architectural consultations.

Digital Footprint