Software Engineer

& Software Development Engineer in Test (SDET)Hi! I'm Alejandro, a Software Engineer working as a SDET. Always looking for problems to solve using code, systemic criteria or just improving Skils.

MoreAbout Me

I'm a software engineer who builds web applications end-to-end — and makes sure they actually work before they ship. My background spans React/Next.js, Node.js, Python, and Flask for development, paired with hands-on experience in automated testing (Selenium, Cucumber, REST Assured) from my time as an SDET at Etsy. That combination means I don't just hand off code — I build it, test it, and help catch issues before your users do.

What I offerServices

Full-Stack Development

Custom web applications, business dashboards, and e-commerce platforms built with React, Next.js, Node.js, and Python. From MVP to production-ready.

AI Integration

Add AI-powered features to your existing product — chatbots, document search, workflow automation — using Claude and OpenAI APIs integrated into your stack.

Test Automation

End-to-end testing frameworks built from scratch using Selenium, Cucumber, and REST Assured. Ship with confidence knowing your app is covered before it reaches users.

API Development

REST and GraphQL APIs designed for scalability and reliability. Includes third-party integrations (Slack, payment gateways, internal business systems).

Have a project in mind?

Let's talk about how I can help you build it.

Get in touch

My personalProjects

Gourmet Hound

Built an ecommerce app for Gourmet Hound, a Fulham deli, with Headless WordPress and Next.js, including product catalogue, shopping basket, and responsive layout for local customers

Next.js

Wordpress

GraphQL

Car Management Dashboard

System Management to organize and get the best car

Python

Flask

PostgreSQL

Book Storage

Built a Book Search Engine with login/signup, using Google Books API. Users can search, save, view, and remove books from their account.

Next.js

Wordpress

GraphQL

My currentEducation

Northwestern University

Professional Certificate in Software Development

September 2024 - April 2025

Over the last year, I have gained hands-on experience with powerful technologies such as the MERN Stack (MongoDB, Express, React, Node.js), Python, GraphQL and Apollo, Cypress for testing, and CI/CD with GitHub Actions. I’ve built full-stack applications, worked on automated testing, and streamlined my development process with modern tools and practices.

UGMA

Bachelor of Science in System Engineering

January 2017 - April 2019

Studied Systems Engineering at Universidad Gran Mariscal de Ayacucho, focusing on programming, algorithms, databases, and systems analysis. Built a strong foundation in software development and problem-solving through engineering principles.

My JobHistory

2018 - 2020
Oxoft Group
As a Jr Software Developer, I created web applications using JavaScript, React.js, and Node.js, translating UX/UI wireframes into reusable JSX components. Collaborated with designers to build and test features using unit testing practices, while applying modern JavaScript (ES6) and object-oriented principles to create scalable, maintainable code.
2022 - 2023
Etsy.com Apprenticeship
During my apprenticeship at Etsy.com, I worked as a Junior SDET focused on UI testing and automation. I analyzed requirements and created detailed test scenarios to ensure feature quality and coverage. I developed and maintained automated tests using Java, Selenium WebDriver, Cucumber BDD, and JUnit. I also generated test reports with screenshots and helped improve testing reliability and debugging efficiency.
2023 - Present
Self-Employee Software Engineer
Full-Stack Software Engineer specializing in custom web applications, business dashboards, e-commerce platforms and AI implementation. I build internal systems that connect directly to a business's existing infrastructure — giving teams real-time visibility and control through clean, reliable web interfaces built with React, Next.js, Node.js, and Python. I also handle automated testing and CI/CD pipelines, so what I ship is production-ready from day one, not just functional in development

My codingSkills

Frontend

React

Next.js

Backend

Node.js

Python

Express

APIs

REST API

GraphQL

Databases

MongoDB

PostgreSQL

Testing

Selenium

Cucumber

REST Assured

Tools

Docker

Git

GitHub Actions

Need help?

Let's have a conversation!