Johan Lorenzo
Engineering Manager at mozilla
Lyon, Auvergne-Rhône-Alpes, France
Summary
🤩
RockstarJohan Lorenzo is an Engineering Manager based in Lyon with 12 years of experience building and scaling CI/CD and release engineering for mobile platforms. He has led automation and release work at Mozilla RelEng, contributing to high-profile projects like Firefox for Android and iOS by hardening Taskcluster pipelines, enabling chain-of-trust, and automating artifact promotion and signing. Comfortable bridging developer and release needs, he pairs hands-on DevOps skills—Taskcluster, Bitrise, docker images and secret management—with team leadership. His background includes front-end and test-automation contributions (Gaia, Selenium) that give him a pragmatic appreciation for product QA and UX implications of release changes. Colleagues rely on him for making complex release workflows repeatable and secure at scale.
12 years of coding experience
Github Skills (49)
javascript10
docker10
webdriver10
selenium10
python10
testing10
bash10
browser10
selenium-ide10
ui-design10
dockers10
cicd10
uid10
release-management10
automation10
Programming languages (24)
Github contributions (5)
mozilla-mobile/firefox-android
Apr 2018 - Jan 2023
:warning: This repository hosts the Firefox for Android (Fenix), Focus for Android, and Mozilla Android Components projects. It is now developed and maintained as part of Mozilla Central. See the announcement here: https://github.com/mozilla-mobile/firefox-android/wiki#upcoming-migration-to-mozilla-central. ”
Role in this project:
DevOps Engineer
DevOps EngineerContributions:236 reviews, 471 commits, 138 PRs in 4 years 9 months
Contributions summary:Johan primarily contributed to the project's build and release automation processes. They modified task definitions related to building and deploying Firefox for Android components, updated Taskcluster configuration, and managed the Continuous Integration (CI) pipeline. Their work included updating docker images, managing dependencies, and handling release promotion steps, showcasing a focus on automating and streamlining the build and deployment workflows.
firefoxhostsandroidandroid-componentsfirefox-for-android
mozilla-mobile/focus-android
Apr 2018 - Dec 2022
⚠️ Firefox Focus (Android) moved to a new repository. It is now developed and maintained as part of: https://github.com/mozilla-mobile/firefox-android
Role in this project:DevOps Engineer / Release Manager
DevOps Engineer / Release ManagerContributions:11 reviews, 64 commits, 45 PRs in 4 years 8 months
Contributions summary:Johan primarily focused on automating the build, testing, and release processes for the Firefox Focus Android application. Their contributions include modifying Taskcluster configurations, updating docker images, and enabling features such as chain of trust for releases. The user also worked on fixing issues related to taskcluster and adjusting various parameters within the build and release pipeline. This includes the implementation of signing configurations.
firefoxbrowserprivacyfirefox-androidandroid
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