Senior Software Engineer

Software engineering for the Visual Studio Mobile organization.

Worked on bringing C# (.NET) to WebAssembly by implementing an ahead-of-time compiling strategy based on the LLVM tooling (code generation and linker) and Mono, in C, C++ and JavaScript.

Conducted research and prototyping of a new product.

Created a full CSS Flexbox Module implementation in C with an extensive test suite and C# bindings and packaging (NuGet). The implementation was designed to be highly portable and minimalist. A managed port shipped as part of Xamarin.Forms at the Microsoft Build 2018 conference

Principal Software Engineer

Created and managed HipByte, a developer tools company. Our main product was RubyMotion, a commercial toolchain to write cross-platform apps for iOS (plus macOS, watchOS, tvOS) and Android using the Ruby language. Founded the company all by myself and grew it organically to a team of 4 people serving over 7000 paid customers without raising any external funding.

Created RubyMotion, a sophisticated build system, an ahead-of-time LLVM-based static compiler for Ruby, and 2 implementations of the Ruby runtime, respectively for Objective-C and JVM/JNI targets, all in C and C++. Wrote the initial project as well as all significant features over the years, and maintained it with a small team of programmers I carefully recruited.

Created a couple of cross-platform RubyMotion libraries (for both iOS and Android): motion-game, a cocos2d-based game framework, and Flow, a CSS-Flexbox-based UI framework, all in C and C++.

Presented RubyMotion at over 25 tech conferences, including 3 I organized myself. Received in 2015 a Ruby Biz Grand Prix award from the Governor of the Shimane Prefecture of Japan and Ruby’s author Yukihiro Matsumoto rewarding companies utilizing the Ruby programming language to create new products and services and establish sustainable business developments.

Founder & CEO

Software engineering for the Core OS department on all releases of Mac OS X from 10.5 to 10.8 at the BSD level of numerous UNIX projects.

Created and led the MacRuby project, Apple’s implementation of the Ruby language using core Mac OS X technologies, such as the Objective-C runtime, garbage collector, the Foundation and ICU frameworks and the LLVM compiler framework. Managed a small team of interns contributing to the project.

Designed and implemented BridgeSupport, a project written in Ruby, C++ and the clang parser framework, that provides metadata information (in XML) covering the system APIs to non-C languages, such as Ruby, Python & others.

Rewrote most of the RubyCocoa project, a bridge between the Ruby and Objective-C runtimes, to make it faster, more stable and maintainable, using C, Objective-C and dynamic/inline assembly (for FFI trampolines). Maintained the project for a few years.

Created the RubyOSA project, a C extension for the Ruby runtime that allows it to access the AppleEvent infrastructure, in order to script Mac OS X applications in the same way AppleScript does.

Improved the Mac OS X Ruby stack (custom interpreter, Rails, gems), performed maintenance and applied security fixes as part of Mac OS X software updates.

Worked with various teams to improve scripting languages in developer tools: Interface Builder, Xcode, DTrace/Instruments, documentation.

Presented the projects above during annual conferences (RubyConf, WWDC, etc.). 

Software engineering on both the backend and the user interface of iCal, iSync and anunreleased iLife application, using C++, Objective-C and Mac OS X APIs (ex. Cocoa).

Laurent Sansonetti

RubyMotion is a toolchain that lets you write iOS and Android apps using Ruby. I wrote the initial revision of the product then improved and maintained it with a small team of programmers I carefully recruited.

RubyMotion

MacRuby was Apple's official Ruby implementation which allowed you to write Mac apps using Ruby. I created and let the project while working at Apple.

Personal details

Laurent S.

Summary

Technical skills

Work Experience

Personal Projects