John Leach
Co-founder at Brightbox
Kirklees, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolJohn Leach is a seasoned technology entrepreneur and engineer with 17 years’ experience, co-founding and running Brightbox, a UK cloud and managed services provider. He blends company leadership with hands-on systems work—regularly managing the business while hacking on Kubernetes and core infrastructure. His background includes security consultancy at EMIS and technical leadership at ECSC, reflecting strong operational and security chops. An active contributor to the Phusion Passenger project, he’s skilled at integrating upstream changes, debugging worker deadlocks and applying low-level fixes that keep production web servers robust. Based in Kirklees, England, he brings a pragmatic, infrastructure-first approach to building reliable cloud platforms.
17 years of coding experience
6 years of employment as a software developer
National Cycling Proficiency Certificate Cycling , National Cycling Proficiency Certificate Cycling at Royal Society for the Prevention of Accidents
Stackoverflow
26reputation
505reached
1answer
0questions
Github Skills (19)
git10
debug10
integrate10
enterprise-integration10
application-integration10
integrations10
system-integration10
version-control10
cloud-integration10
data-integration10
apache9
c-language9
cprogramming-language9
nginx-module8
debian-packaging8
Programming languages (14)
Github contributions (5)
phusion/passenger
Nov 2008 - May 2013
A fast and robust web server and application server for Ruby, Python and Node.js
Role in this project:
Back-end Developer
Back-end DeveloperContributions:171 commits, 1 comment in 4 years 6 months
Contributions summary:John's commits primarily involve integrating upstream versions and resolving conflicts within the Phusion Passenger codebase. Their work focused on updating and merging upstream changes, indicating a role in maintaining the project's core functionality and keeping it synchronized with external developments. The commits also included specific fixes related to the Passenger configuration and worker deadlock, suggesting a deep understanding of the system's internal workings and debugging capabilities. A key part of their work also involved applying patches and updating header files for different functionalities.
pythonweb-servernode-jsrubycloud
brightbox/puppet-git-receiver
Jul 2012 - Apr 2016
Script to validate and apply puppet manifests pushed to a git repository
Contributions:38 commits, 2 pushes in 3 years 9 months
git-repositorypuppetapplymanifestsvalidate
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