Santiago Ulloa

Frontend Software Engineer

I build exceptional and accessible digital experiences for the web.

About Me

I'm a passionate Frontend Software Engineer with 4 years of experience building modern web applications.

My Background

I started my journey as a Frontend Engineer in 2020 after switching careers. Since then, I've worked at American Express creating responsive, user-friendly web applications using modern technologies.

I'm a Refrigeration Engineer and Insurance Examiner turned Frontend Software Engineer, utilizing analytical thinking skills and collaboration to deal with fast-paced environments. My lifelong passion for programming consistently motivates me to conquer challenging problems. With a Bachelor of Science in Business Management and Finance, I understand the importance of productive team management, collaboration, and effective communication. I find joy in helping others reach their goals and I'm dedicated to bringing results to modern problems through code. I am an innovative thinker with a knack for technology who takes pride in collaboration and working effectively as a team.

My focus is on creating clean, efficient, and maintainable code while delivering exceptional user experiences. I'm passionate about React, JavaScript, TypeScript, and modern frontend architecture.

When I'm not coding, you can find me swimming, reading tech blogs, or experimenting with new web technologies.

Skills & Expertise

Technologies and tools I've been working with

Frontend Development

Building responsive and accessible user interfaces

React

Next.js

TypeScript

JavaScript

HTML

CSS

Redux

Tailwind CSS

Backend Development

Building robust server-side applications

Java

Spring Boot

Python

Node.js

Express

RESTful APIs

Database & Storage

Managing and optimizing data storage

PostgreSQL

MongoDB

SQL

GraphQL

UI/UX Design

Creating beautiful and intuitive user experiences

Tailwind CSS

Styled Components

Figma

Material UI

Responsive Design

CSS

Cloud & DevOps

Deploying and managing cloud infrastructure

AWS

Docker

Git

CI/CD

Mobile Development

Building native and cross-platform mobile apps

Swift

React Native

iOS Development

Work Experience

My professional journey as a frontend engineer

Frontend Engineer

American Express

Jan 2020 - Jan 2024

Frontend development of multiple large-scale client facing React modules on the Amex dashboard with over 10 million monthly visits. Architected and implemented new components and libraries that improved user engagement and performance in the Proactive Engagement and Web Performance scrum teams.

React

One App

JavaScript

TypeScript

Next.js

Redux

Design Language System (DLS)

Express.js

Node.js

Git

PostgreSQL

Format.js

Holocron

Jest

Enzyme

Docker

CI/CD

Parrot

Fetchye

GraphQL

React Testing Library

Storybook

Github

Gitlab

Bitbucket

Featured Projects

Some of my recent work that I'm proud of

Officey

Developed a Reddit-like app for offices. Features a frontend with user authentication, post creation, and real-time feed updates, supporting user comments.

HTML5

CSS3

JavaScript

AJAX Custom API

Officey fullstack

A new and improved version of Officey with a monolithic backend using Spring Boot and PostgreSQL. Features a frontend with user authentication, post creation, and real-time feed updates, supporting user comments.

HTML5

CSS3

JavaScript

Java

Spring Boot

PostgreSQL

Cartit

A full-stack grocery shopping list app with user authentication.

React

JavaScript

Styled Components

CSS3

Docker

Java

Spring Boot

Microservices

Material UI

PostgreSQL

Get In Touch

Have a project in mind or want to discuss opportunities? I'd love to hear from you.

Email

Feel free to email me directly at santiago.a.ulloa@outlook.com

Connect with me on LinkedIn for professional updates

GitHub

Check out my code on GitHub