Frontend Engineer

Specializing in React, TypeScript, Node.js and NestJS.

I build accessible, production-ready web products with agentic development workflows.

About Me

Profile / 2026

Frontend Engineer with 3+ years at Santander Tecnología Argentina, building production-critical banking and investment features using React and TypeScript. Experienced in high-volume transactional systems, BFF development with Node.js/NestJS, and production incident resolution. I integrate agentic workflows with GitHub Copilot, Windsurf, Devin, Claude Code and Codex into my daily development cycle.

3+ yearsproduction engineering
Agentic workflowsCopilot · Windsurf · Devin · Claude Code · Codex
React / TSfrontend systems
BFFNode.js & NestJS

Experience

Santander Tecnología Argentina

Software Engineer

SEP 2023 - JUN 2026

Built frontend and BFF functionality for Dólar MEP purchases through linked external accounts.
Developed accessible, production-ready interfaces for Market & Tenders in Home Banking.
Contributed frontend and BFF work to Voluntary Corporate Events for investment holdings.
Investigated and resolved production incidents using Kibana, Grafana and OpenShift.

Next.js
React.js
Node.js
NestJS
TypeScript
JavaScript
Styled Components
Testing with Jest and Testing Library

Santander Tecnología Argentina

Software Engineer

MAR 2023 - SEP 2023

Refactored UI during the Home Banking Modernization initiative.
Developed transactional interfaces for USD purchase and sale flows.
Improved accessibility in investment modules following WCAG guidelines.

React.js
TypeScript
JavaScript
Styled Components
Jest

Nodos Hub

Frontend Developer Intern

AUG 2022 - OCT 2022

Rebuilt the public landing page using React and JavaScript.
Implemented authentication form validation and state handling.

React.js
JavaScript

Projects

Ciudades Fascinantes App

Ciudades fascinantes it's an app about information of countries and cities. It's my final project for an intensive course of Next.js and React.js.

Next.js

React.js

Material UI

Firebase

Github

Deploy

Videoclub App

Movies app with a Netflix vibes. For the data requests i used TMDB Api. Built with Vite, React.js, JavaScript, TailwindCSS and Firebase.

React.js

JavaScript

Tailwind

Firebase

Github

Deploy

Search Images App

A simple app to search different images and photos using the Pixabay API. I Built the app with React, JavaScript, Tailwind, react-router-dom-V6, react infinite scroll component, react toastify, lottie react and react icons.

React.js

JavaScript

Tailwind

Github

Deploy

The Weather App

A weather app built with React, JavaScript, Tailwind, React-hooks, Luxon.js. I used three APIs for the data. for the backgrounds images I used the unsplash API and for the weather data I used two open weather map APIs.

React.js

JavaScript

Tailwind

Github

Deploy

The New York Times Books App

This is an application to allow us find a list through diferent categories of the best sellers books by the new york times. I built the entire app with React, JavaScript and Tailwind.

React.js

JavaScript

Tailwind

Github

Deploy

Poetry Quotes App

Poetry ramdon quotes app gives you a ramdon quote everytime you click on the button. I built the app with React, JavaScript, Tailwind, react icons and framer motion for the animations.

React.js

JavaScript

Tailwind

Github

Deploy

Infonews App

News app built with React, JavaScript and Tailwind. For the data I used the 'gnews' API

React.js

JavaScript

Tailwind

Github

Deploy

Todo App

Todo App built with React, JavaScript and Bootstrap. I used for the first time the React hot toast library to generate different notifications and also used local storage to save the data

React.js

JavaScript

Bootstrap

CSS

Github

Deploy

Contact

maticarlosarias@gmail.com