Harrison Healey
Software Design Engineer at Mattermost
Mississauga, Ontario, Canada
Summary
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Harrison Healey is a Software Design Engineer with 11 years of experience based in Mississauga, Ontario, who has been a long-term contributor to Mattermost, shaping front-end, mobile, backend-redux, documentation and DevOps integrations across its ecosystem. He blends full-stack chops—React web, React Native mobile, Redux state work and webpack/module federation tweaks—with practical DevOps and docs updates, which lets him move features from design to production smoothly. His work on high-profile open-source projects like Mattermost and Focalboard highlights a focus on improving UX around error handling, media rendering, and permissioning. Comfortable across both product-facing UI and backend selectors/APIs, he’s also fixed low-level platform issues such as navigation and build configurations that many engineers don’t touch.
11 years of coding experience
3 years of employment as a software developer
Bachelor of Computer Science (BCS), Computer Science, Bachelor of Computer Science (BCS), Computer Science at University of Waterloo
English
Stackoverflow
36reputation
770reached
2answers
0questions
Github Skills (61)
markdown10
javascript10
react-native10
mobile-development10
back-end-development10
apidoc10
configuration-management10
typescript10
webpack10
ruby10
mattermost10
markdown-it10
api10
front-end-development10
federation10
Programming languages (14)
Github contributions (5)
mattermost/mattermost-redux
Mar 2017 - Mar 2021
Redux for Mattermost
Role in this project:
Back-end Developer
Back-end DeveloperContributions:97 reviews, 247 commits, 362 PRs in 4 years
Contributions summary:Harrison's contributions focus on implementing user-related functionalities within the Mattermost-Redux repository. They implemented a selector for retrieving users by username and action to get a single user by id or username. These changes involved modifying existing files and creating new ones to support fetching and managing user data effectively. The user also updated the server API version usage within the actions.
driverreduxmattermost
mattermost/mattermost-webapp
Mar 2016 - Jan 2023
Archived web app of Mattermost. Moved to the monorepo: https://github.com/mattermost/mattermost
Role in this project:Front-end Developer
Front-end DeveloperContributions:2336 reviews, 1313 commits, 1686 PRs in 6 years 11 months
Contributions summary:Harrison primarily contributed to the Mattermost web application by addressing front-end issues, specifically those related to the user interface and interaction with various components. Their commits involved improvements in component rendering, particularly regarding the appearance and functionality of images, links, and the text editor. Additionally, the user made changes to handle various scenarios that could cause UI/UX bugs, like fixing errors when displaying images and correcting link formatting.
webapphttps-servermattermostmattermost-server
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