John Barnette
Co-Founder at Consolidated Development Environments, Inc.
Wheat Ridge, Colorado, United States
Summary
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RockstarJohn Barnette is a seasoned software engineer and Co-Founder with 18 years of experience building and steering engineering teams and products from startup CTO roles to Principal Engineer at GitHub. Based in Wheat Ridge, Colorado, he blends deep back-end expertise in Ruby and platform work with front-end and DevOps experience, contributing to high-profile open-source projects like RubyGems, Nokogiri, Rubinius and Atom. He has a track record of improving core libraries and tooling—adding features, tightening tests, and modernizing build and dependency workflows—while also tackling low-level issues like signal handling and version semantics. As a former webmaster of his own site and hands-on maintainer, he brings a practical, detail-oriented mindset to developer experience and build systems. His career moves show a mix of product leadership and technical craftsmanship, from leading engineering teams to founding Consolidated Development Environments, Inc.
18 years of coding experience
17 years of employment as a software developer
Github Skills (37)
atom-editor10
dependency-management10
editors10
puppeteer10
javascript10
signal-handling10
coffeescript10
electron10
puppet10
rubygems10
testing10
rubinius10
virtual-machine10
editor10
ruby10
Programming languages (12)
Github contributions (5)
boxen/our-boxen
Oct 2012 - Feb 2013
Copy me for your team.
Role in this project:
DevOps Engineer
DevOps EngineerContributions:33 commits in 4 months
Contributions summary:John primarily focused on configuring and managing dependencies and environments for the "our-boxen" repository. They made changes to `config/basic.rb` and `config/boxen.rb`, likely for setting up the environment. The user also introduced changes to `manifests/site.pp` and `vendor/cache` files, indicating involvement with the project's dependencies and setup of the underlying puppet framework and dependencies. Most notably, the user updated gem dependencies.
ruby/rubygems
May 2008 - Mar 2011
Library packaging and distribution for Ruby.
Role in this project:Back-end Developer
Back-end DeveloperContributions:61 commits in 2 years 10 months
Contributions summary:John contributed to the RubyGems library, focusing on enhancements and bug fixes. They implemented new features like `Gem.available?`, supported specific Zlib behavior, and refactored parts of the code to improve version handling. The user also made several updates to the testing framework, including adding new tests and fixing existing ones. Further, they worked on improving the overall code quality by eliminating usages of the deprecated `fail` and addressing versioning concerns.
rubyrubygemspackage-manager
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