Full Stack Developer

Leonel Anadón

I work on building web applications, developing complete solutions from backend logic to user-facing interfaces. I focus on creating well-structured, scalable, and maintainable products, combining solid architecture with clean and functional user experiences.

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My skills

Front-end

React

SvelteKit

Vue

Nuxt

Angularjs

Vanilla

Back-end

NestJS

Express

Fastify

Restify

AdonisJS

Elysia

BullMQ

Databases & Queues

PostgreSQL

MySQL

MongoDB

Redis

DevOps & Cloud

Docker

Podman

Nginx

Caddy

Google Cloud

KrakenD

Prometheus

Grafana

Loki

Projects

Project One - Minimal web app screenshot in device mockup

Project: Ecommerce Cofaral

I fully developed a B2B e-commerce platform for the pharmaceutical sector, handling both frontend and backend responsibilities. On the frontend, I worked with React, React Router DOM, and Sass, focusing on SEO, accessibility (Radix UI), and a clear user experience tailored for high-volume operations.

The backend was built using NestJS and PostgreSQL, including an API integrated with SAP for product, stock, and order management. Today, the platform plays a key role in the company’s sales process, with over 70% of transactions handled through the call center using the system as its main operational tool.

Project Two - Clean portfolio typography example

Project: Capsula

Capsula is a monolithic internal system built with Express and EJS, using PostgreSQL as its database. Its main purpose is to document and centralize internal procedures across multiple areas such as SAP, IT, Web, and Support.

It also includes an equipment permission management module, allowing employees to request authorization to take company laptops for home office use. The system sends email notifications and exposes an external API consumed by Zebra mobile devices to validate permissions in real time.

Project Three - Experimental 3D landing page mockup

Project: Ecommerce Riwer

I developed an e-commerce platform for a local hardware store in Tucumán, including a full admin panel to manage categories, products, offers, sliders, and multiple images per product.

The platform integrates Mercado Pago for payments and uses BullMQ to handle email delivery with a custom domain. The job queue is also used to synchronize data from Riwer’s external API, automatically importing prices, stock updates, and new products in an efficient and reliable way.

Contact

Interested in collaborating? Let’s connect and create something amazing together.