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Jose Parrales

@joseparrales

Ruby on Rails Developer at Grupo Educativo Cinco, replacing a slow, frequently attacked WordPress site with a custom Rails application.

Colombia

Message

At Grupo Educativo Cinco, I replaced a slow, frequently attacked WordPress site with a custom Rails application now in production. Contact messages reach the team through WhatsApp and a web form.

I'm building Sipote, a Rails quoting system to replace manual Excel quotes that took between four hours and three days. I extracted and normalized data from supplier catalogs with Python, and I'm developing the production version with Stimulus and PostgreSQL.

Experience

Work history, roles, and key accomplishments

Current

Ruby on Rails Developer

Current

Soluciones de Ingeniería A&H

Jan 2026 - Present (9 months)

Building a quoting system to replace manual Excel quotes, reducing turnaround from hours to minutes. Extracted and normalized data from 15 supplier catalogs and modeled ~2,700 supplies.

Ruby on Rails Stimulus PostgreSQL Python React TypeScript Supabase Railway

Current

Ruby on Rails Developer

Current

Grupo Educativo Cinco

Jul 2024 - Present (2 years 3 months)

Replaced a slow, frequently attacked WordPress site with a custom Rails application in production. Delivered contact messages through WhatsApp and a web form.

Ruby on Rails PostgreSQL WordPress Migration Web Development

Current

Instructor

Current

Grupo Educativo Cinco

Jan 2012 - Present (14 years 9 months)

Taught math, Python, physics, electronics, and algorithms.

Python Mathematics Physics Electronics Algorithms

Full Stack Developer

Horbath Technologies S.A.S

Mar 2023 - Jun 2024 (1 year 3 months)

Developed features for a payments platform, including login improvements, deferred credit payments, and gas bill payment. Improved payment and insurance purchase views in React and performed SQL queries, unit tests, and code reviews.

React NodeJS NestJS PostgreSQL SQL Unit Testing Code Review Scrum

Backend & Front-End Developer

Codian

Jul 2021 - Jun 2022 (11 months)

Built a reactive, mobile-first front end with Stimulus JS and Stimulus Reflex, enabling real-time updates without page reloads. Developed backend and REST APIs in Rails on PostgreSQL with RSpec tests.

StimulusJS StimulusReflex Ruby on Rails REST APIs PostgreSQL RSpec