Resume

I have worked with everything from assembly and C to F# and Elixir. I have a strong interest in programming language and runtime platform design; I invariably end up reading the formal specifications of the languages I use, and I have designed languages of my own. I am comfortable stating that I have an above-average understanding of the programming languages I use.

I have many years of experience working on cross-platform projects targeting Windows, Linux, and macOS at various levels of abstraction. I am, for better or worse, intimately familiar with many of the nasty quirks and pitfalls of each operating system. I have also worked with most of the major processor architectures in use today - x86, ARM, RISC-V, MIPS, and others.

When necessary, I have reverse engineered both native and managed applications and libraries for the sake of interoperability, bug fixing, security research, or just plain old curiosity.

I have created several open source programs and projects, some of them more complete than others:

• Alkahest: An extensible TERA proxy server
• Atomique: Sane atomic operations for .NET based on the C++11 memory model
• Augmentrex: A reverse engineering tool for the Steam version of Hellgate: London
• DAREPL: An interactive REPL for CPU architecture emulation
• ExMake: A modern, scriptable, dependency-based build tool similar to Make
• ExParsec: A parser combinator library inspired by Parsec
• Flare: A dynamic programming language suitable for embedding
• SDB: Command line interface to the Mono soft debugger
• Satori: Libraries and tools for the Epiphany processor architecture
• System.Terminal: A terminal-centric replacement for System.Console

I have contributed to many others:

• DMD: The reference compiler for the D programming language
• dnlib: .NET module/assembly reader/writer library
• DocFX: Tools for building and publishing API documentation for .NET projects
• DRuntime: The runtime library for the D programming language
• Elixir: The Elixir programming language for the Erlang VM
• gpr: A .NET Core tool for working with the GitHub Package Registry
• Homebrew: The missing package manager for macOS
• LDC: The LLVM-based compiler for the D programming language
• Meson: The Meson build system
• Mono: Open source implementation of C#, CLI, and .NET
• MonoDevelop: Open source C#/.NET IDE
• Orleans: A cross-platform framework for building distributed .NET applications
• Pegged: PEG-based parser generator for the D programming language
• Phobos: The standard library for the D programming language
• VapourSynth: A modern video processing framework
• Waf: The meta build system
• Xamarin.Android: C# bindings and tooling for Android
• Xamarin.Mac/iOS: C# bindings and tooling for macOS, iOS, tvOS, and watchOS

I have worked for the following companies and organizations:

• Microsoft (2016-2019): Runtime engineer working on the Mono virtual machine and related tooling
• Xamarin (2013-2016): Runtime engineer working on the Mono virtual machine and the Xamarin.Android, Xamarin.iOS, and Xamarin.Mac products
• Mono Project (2012-2012): Google Summer of Code mentor overseeing a student's continued work on the CIL assembler and disassembler tools
• Xamarin (2011-2012): Intern working on the internal build system for Xamarin.Android and Xamarin.iOS documentation
• Mono Project (2011-2011): Google Summer of Code student working on C# implementations of the CIL assembler and disassembler tools