Peter Dehaan
QA Developer at Mozilla Corporation
Area F (Alberni Highway), British Columbia, Canada
Summary
🤩
Rockstar🎓
Top SchoolPeter Dehaan is a QA Developer with 14 years of experience specializing in front-end and full-stack maintenance, testing, and tooling for large open-source projects. Based in British Columbia, he has spent the last decade-plus at Mozilla contributing to high-profile Firefox-related repos—improving UI/UX, tightening linting and build workflows, and expanding test coverage across projects like Firefox Accounts, Send, and Multi-Account Containers. He pairs a background in QA and developer relations (Sencha, Motorola, Adobe) with hands-on JavaScript, Node.js, and tooling expertise, often focusing on ESLint/Prettier integrations and codebase consistency. Known for pragmatic refactors and small but impactful UI fixes, he quietly improves developer experience and product quality rather than chasing headlines. His Github contributions show a pattern of cross-cutting maintenance that keeps large codebases healthy and shipping.
14 years of coding experience
5 years of employment as a software developer
BS, Computer Systems Technology, BS, Computer Systems Technology at Camosun College
Stackoverflow
41reputation
0reached
0answers
0questions
Github Skills (43)
javascript10
web-application10
back-end-development10
firefox-webextension10
browser-extension10
testing10
css10
user-interface10
eslint10
firefox-addon10
ui-design10
software-quality10
integrations10
e-mail10
uid10
Programming languages (23)
Github contributions (5)
mozilla/blurts-server
Feb 2018 - Dec 2022
Mozilla Monitor arms you with tools to keep your personal information safe. Find out what hackers already know about you and learn how to stay a step ahead of them.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:948 reviews, 128 commits, 288 PRs in 4 years 11 months
Contributions summary:Peter primarily focused on back-end development tasks, modifying server-side routes, and implementing features related to user subscriptions and email notifications. They updated existing routes for user management, added functionality for OAuth-based authentication, and refactored existing code to adhere to new coding standards and address linting issues. The user demonstrated proficiency in Node.js, as well as working with environment variables for configuration.
firefoxmonitorkeepprivacydata-breach
mozilla/send
Jun 2017 - Jan 2019
Simple, private file sharing from the makers of Firefox
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:72 commits, 57 PRs, 9 pushes in 1 year 8 months
Contributions summary:Peter primarily focused on improving the user interface and fixing various issues within the Firefox Send project. They added and modified HTML and CSS to update the look and feel of the application, including the download progress bar color. They also addressed ESLint and Stylelint errors and removed htmllint configurations. Additionally, the user updated dependencies, implemented an /__version__ route, and made several other code formatting and refactoring changes.
firefoxmakersfile-sharingsharingthunderbird
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