Leo Correa
Summary
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RockstarLeonardo Correa is a Senior Software Engineer with 13 years of experience building backend systems in Go and Ruby, currently driving development at GitHub from New York. He combines hands-on implementation—contributing to high-profile projects like Rails and the Exercism CLI—with a focus on developer productivity, reducing technical debt, and improving tooling. A former founder and long-time mentor, he has taught Rails at a bootcamp and guided engineers to meet career goals, bringing both entrepreneurial pragmatism and coaching skills to teams. His open-source contributions span reliability fixes in Active Record and UX improvements in exercism/cli, reflecting a knack for shipping practical fixes that prevent real-world failures.
14 years of coding experience
Stackoverflow
19,379reputation
1.8mreached
313answers
15questions
sql
top-5%
sinatra
top-5%
ruby-on-rails
top-5%
gulp
top-5%
redirect
top-5%
http
top-1%
Github Skills (34)
ruby-rails10
cors10
testing10
command-line-interface10
http10
rails10
ruby10
go10
command-line10
activerecord10
post9
application-framework9
apim9
json9
rspec9
Programming languages (15)
Github contributions (5)
exercism/cli
Sep 2013 - Aug 2017
A Go based command line tool for exercism.org.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 releases, 165 commits, 99 PRs in 3 years 11 months
Contributions summary:Leo primarily contributed to the command-line interface for exercism.org by adding new functionalities and modifying existing ones. Their work included implementing an "unsubmit" feature, enabling filtering of current assignments by language, and providing the ability to skip problems. The user also improved the user experience by providing more descriptive error messages and improving the login process.
command-line-toolgocommunity-contributions-paused
rails/rails
Apr 2021 - Jun 2021
Ruby on Rails
Role in this project:Back-end Developer
Back-end DeveloperContributions:4 reviews, 6 commits, 4 PRs in 2 months
Contributions summary:Leo primarily contributed to the Active Record component of the Rails framework. Their work focused on improving the reliability of autosave callbacks, addressing issues related to dirty attributes, and correcting callback behaviors during updates. Furthermore, the user resolved deprecation warnings and reverted changes related to write protection on replicas, contributing to overall stability and maintainability. The changes also involved test case additions and modifications, with the intent of preventing unexpected behaviors.
ruby-on-railsrailsmvcactiverecordactivejob
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