Olivier Halligon
Mobile Infrastructure & Platform Engineer
Rennes, Brittany, France
Summary
🤩
RockstarOlivier Halligon is a Mobile Infrastructure & Platform Engineer with 16 years of experience, currently improving developer experience at Automattic and running a freelance practice focused on iOS tooling, CI/CD and automation. He’s a prolific OSS author and core contributor—best known for SwiftGen and OHHTTPStubs—and has meaningful contributions to high-profile projects like CocoaPods, Fastlane and SwiftLint that shape iOS developer workflows. Olivier combines deep Xcode/Ruby/Swift expertise with practical automation (Fastlane, Homebrew packaging, CI bots) to streamline build, release and code-review processes across large mobile teams. A regular international speaker and coach, he pairs hands-on platform engineering with architecture guidance to raise team velocity and code quality. Notably, he builds cross-tool integrations (bots, code generators, SwiftLint rules) that solve developer pain points rather than just individual features.
16 years of coding experience
7 years of employment as a software developer
French, English
Stackoverflow
32,671reputation
1.9mreached
556answers
0questions
animation
top-5%
afnetworking
top-5%
grand-central-dispatch
top-5%
nsstring
top-1%
cocoa-touch
top-5%
cocoa
top-1%
Github Skills (79)
protocol-oriented10
testing10
command-line-interface10
rspec10
cocoa10
ruby10
android-developer10
javas10
automation10
code-generation10
formulas10
nsstring10
linting10
iphone-app10
software-packaging10
Programming languages (20)
Github contributions (5)
AliSoftware/OHHTTPStubs
Jul 2012 - Apr 2019
Stub your network requests easily! Test your apps with fake network data and custom response time, response code and headers!
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:40 releases, 5 reviews, 460 commits in 6 years 10 months
Contributions summary:Olivier was the primary contributor to the OHHTTPStubs project, developing the core functionality. They implemented features for network request stubbing, adding swift helper functions and features, and improved compatibility across different platforms including tvOS. They are also the main contributor in making the project compatible with CocoaPods and XCTest Framework.
network-requestsobjective-cnetwork-datastubmock-server
SwiftGen/SwiftGen
Jul 2015 - Sep 2020
The Swift code generator for your assets, storyboards, Localizable.strings, … — Get rid of all String-based APIs!
Role in this project:Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:66 releases, 23 reviews, 640 commits in 5 years 3 months
Contributions summary:Olivier contributed to the SwiftGen project, focusing on enhancing the code generation capabilities for iOS development, specifically regarding assets and storyboards. The commits demonstrate work on improving the parsing of Localizable.strings files, including the handling of various placeholder types and positional arguments. The contributions involved the development of a standalone command-line tool for assets, improved code formatting and SwiftLint compliance, and integration with Stencil templating engine.
localizablestoryboardsstringuiimagestrings
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.