Pat O'callaghan
Staff Engineer at Intercom
Dublin, Dublin 1, Ireland
Summary
👤
Senior🎓
Top SchoolPat O'callaghan is a Staff Engineer with 14 years of experience building robust front-end tooling and developer experience at Intercom in Dublin. He is an active open-source contributor in the Ember ecosystem, having improved core projects like ember.js and key linters and plugins that shape how Ember apps are written and tested. Pat combines deep practical knowledge of template/compiler changes, lint-rule design, and testing automation—skills reflected in contributions that span deprecations, rule implementations, and comprehensive test suites. His background in ubiquitous computing (MSc) and information and communications technology (BA Mod) gives him a systems-minded approach to user-facing code. Colleagues rely on him to modernize legacy patterns safely while keeping developer ergonomics front of mind. Outside of product work he quietly drives higher code quality by refining linters and documentation that benefit the broader community.
14 years of coding experience
B.A. Mod, Information and Communications Technology, B.A. Mod, Information and Communications Technology at Trinity College Dublin
Github Skills (16)
html10
linting10
javascript-framework10
emberjs10
automation10
javascript10
automations10
ember-data10
eslint10
automation-testing10
handlebars10
ember10
test-automation10
testing10
css9
Programming languages (11)
Github contributions (5)
adopted-ember-addons/ember-data-factory-guy
Apr 2016 - Oct 2022
Factories and helper functions for (unit, integration, acceptance) testing + development scenarios with Ember Data
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:4 releases, 8 reviews, 31 commits in 6 years 7 months
Contributions summary:Pat primarily focused on adding and modifying unit, and acceptance tests for the `ember-data-factory-guy` project. Their contributions involved creating tests for Ember Data Model Fragment unit tests, verifying model fragments and relationships. They also implemented tests to check url matching of mockDelete and mockUpdate. These tests aimed to ensure the correct functionality and behavior of the Ember Data factories and related functionalities within the project.
acceptance-testingfactoriesember-addontestingunit
ember-template-lint/ember-template-lint
May 2019 - Feb 2021
Linter for Ember or Handlebars templates
Role in this project:Front-end Developer
Front-end DeveloperContributions:4 reviews, 16 commits, 5 PRs in 1 year 9 months
Contributions summary:Pat primarily contributed to the linting rules for Ember templates. They implemented and refined lint rules to enforce best practices regarding component invocation, specifically addressing curly and classic invocation syntax. They also added new rules to enhance code quality and readability, along with the related test cases and configuration. Furthermore, the user made improvements to the existing code, including adding a new configuration option for a rule.
hbslinterlinthandlebars-templateshandlebars
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.