Katherine Bailey
Staff Software Engineer at Shopify
Old Toronto, Ontario, Canada
Summary
👤
Senior🎓
Top SchoolKatherine Bailey is a Staff Software Engineer with 15 years of experience building scalable web and AI-driven systems, currently leading engineering efforts at Shopify out of Old Toronto. She blends deep backend craftsmanship—evidenced by substantive contributions to Drupal core around request handling, caching, and architecture—with hands-on machine learning product leadership from roles as Principal Data Scientist and AI lead. Katherine has moved teams to modern workflows and cloud-native patterns, shipped real-time reporting and personalization engines in Go and AWS, and led data science strategy across product teams. Her career spans startups to global consultancies, giving her a pragmatic approach to shipping reliable systems under ambiguity. Notably, she speaks publicly on human-centered AI and has shaped both open-source projects and enterprise ML deployments.
15 years of coding experience
13 years of employment as a software developer
Bachelor of Arts, International Marketing with German and French, Bachelor of Arts, International Marketing with German and French at Dublin City University
Github Skills (10)
drupal10
http-server10
http-kit10
php10
dependency-injection10
symfony10
symfony-ux10
event-dispatching9
content-negotiation9
caching9
Programming languages (6)
Github contributions (5)
drupal/drupal
Apr 2012 - Aug 2012
Verbatim mirror of the git.drupal.org repository for Drupal core. Please see the https://github.com/drupal/drupal#contributing. PRs are not accepted on GitHub.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:43 commits in 4 months
Contributions summary:Katherine primarily focused on back-end development, contributing significantly to the Drupal core. Their work involved implementing a ResponseSubscriber for caching and other end-of-request tasks, and integrating a request object within the core codebase. They also addressed content negotiation, and refactored the DrupalBundle class. These changes reflect a focus on improving the core framework's performance, request handling, and overall architecture.
drupal
katbailey/katbailey.github.io
May 2013 - Mar 2019
Contributions:60 commits, 46 pushes, 1 branch in 5 years 11 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.