Medellín, Colombia · Open to remote or hybrid roles

Jhon Henry Quintero

Senior Software Engineer

I have more than 15 years of experience building backend systems, APIs, payment integrations, and asynchronous workflows. I have worked as both an individual contributor and engineering manager. My recent production work centers on Elixir, Phoenix, Ruby, and Rails.

Elixir · Phoenix · Ruby on Rails · GraphQL

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Experience

More than fifteen years across product engineering and technical leadership.

09/2020 — 03/2026

Omella

Backend Developer · Remote, USA

Designed high-volume GraphQL APIs with Absinthe and asynchronous architectures with Oban.
Cut CI/CD time from 20 to 5 minutes and automated 99% of refund-related engineering operations.
Implemented ACH payments with Stripe and Finix, and shipped React and TypeScript features with Apollo Client.

Elixir · Phoenix · Absinthe · GraphQL · Oban · Stripe · Finix · React · TypeScript

03/2017 — 09/2020

ipsy

Backend Developer · Remote, USA

Developed product collections, increasing bundle sales by 20% in the first month.
Built a Ruby and Grape shopping cart microservice that improved checkout response times by 50%.
Maintained the Shopper API with Rails, Grape Entity, RSpec, and Jenkins.

Ruby · Rails · Grape · Grape Entity · RSpec · Jenkins

07/2014 — 03/2017

Altavista Editores

Engineering Manager · Medellín

Led sprint planning, backlog grooming with product, and end-of-sprint demos.
Introduced weekly unblocking rituals, raising throughput to one completed user story per developer per sprint.

Sprint planning · Backlog management · Team leadership

05/2011 — 07/2014

Altavista Editores

Web Application Developer · Medellín

Built Maestro LMS features with Rails, jQuery, AngularJS, MySQL, Redis, and Sidekiq.
Created an onboarding guide that reduced developer onboarding time by 50%.

Ruby on Rails · jQuery · AngularJS · MySQL · Redis · Sidekiq

02/2008 — 01/2011

Gattaca Outsourcing S.A.S (GTK)

PHP Developer & Technical Lead · Bogotá

Led the Ktronix Magento ecommerce project, generating approximately COP 50 million in additional monthly sales.
Led a SugarCRM solution for Orientame that reduced operational management time by 50%.

PHP · Magento · SugarCRM

Engineering highlights

A few problems I've worked on.

CI/CD optimization

Reduced build and test execution time through parallel tests and build caching.

75%

Refund automation

Automated the refund workflow, reducing the manual work required from the engineering team.

99%

ACH payment integrations

Implemented Stripe and Finix integrations that enabled fee-free ACH payments for end users.

Product improvements

Contributed to bundle functionality associated with an increase in sales during its first month.

20%

Technical practice

Technologies used in production.

Backend systems

Elixir, Phoenix, Ruby, Ruby on Rails, PHP, Oban, Sidekiq

APIs & data

GraphQL, Absinthe, REST, PostgreSQL, MySQL, Redis

Payments

Stripe, Finix, ACH payments, refund workflows

Delivery & operations

RSpec, Jenkins, CI/CD, test parallelization, build caching

Frontend

React, TypeScript, Apollo Client, AngularJS, jQuery

Background

Engineering and management experience.

I have worked as a backend engineer, technical lead, and engineering manager. That range helps me connect implementation details with delivery, product decisions, and the day-to-day work of keeping a team moving.

Education

Postgraduate Specialization in Software Development

EAFIT · Medellín · 2025 (1 semester)

Systems and Telecommunications Engineering

Universidad de Manizales · 2001—2007

Languages

English · C2 Advanced (EF SET 78/100)

Spanish · Native

Contact

I am available for senior software engineering roles, remotely or in a hybrid position in Medellín.

Medellín, Colombia

LinkedIn GitHub Download CV

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