Calvin Buckley
Open Source Developer at Seiden Group
Fredericton, New Brunswick, Canada
Summary
🤩
Rockstar🎓
Top SchoolCalvin Buckley is an Open Source Developer with 13 years’ experience specializing in language runtimes, portability, and systems-level interoperability. He has deep practical expertise in PHP runtime and extension development—currently serving as PHP 8.4 release manager—and a strong track record porting and maintaining runtimes like Mono and Erlang/OTP across niche platforms such as AIX, IBM i, Haiku, and PowerPC. Calvin combines low-level system API knowledge (Win32, AppKit, POSIX) with real-world integration work for clients, from debugging runtimes with gdb to packaging commercially supported PHP distributions for IBM i. His contributions to high-profile projects like libgit2, dotnet/runtime, and mono demonstrate a focus on cross-platform correctness, build-system fixes, and careful use of stdint types to improve portability. He also brings UX-minded macOS application modernization and experience in Windows’ less-traveled areas (ICM, shell/VS extensions), making him effective across both developer tooling and end-user concerns. Based in Fredericton, Canada, Calvin combines systems research curiosity with pragmatic delivery for legacy and emerging platforms.
13 years of coding experience
Information Technology, Information Technology at NBCC (New Brunswick Community College)
Github Skills (33)
git10
powerpc10
porting10
erlang10
system-programming10
multiplatform10
datatypes10
net10
aix10
dotnet10
build-system10
cross-platform10
c1110
haiku10
c1710
Programming languages (27)
Github contributions (5)
mono/mono
Feb 2017 - May 2020
Mono open source ECMA CLI, C# and .NET implementation.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 76 commits, 70 PRs in 3 years 3 months
Contributions summary:Calvin primarily focused on porting Mono, a .NET implementation, to the Haiku operating system. Their contributions involved restoring Haiku support, fixing build issues, and adapting code for Haiku-specific system calls and functionalities. They also made improvements to the build system and configuration scripts, including better detection of header files and handling of platform-specific libraries. The user's work enabled Mono to run further on Haiku and addressed several system-level dependencies to achieve cross-platform compatibility.
dotnetjitruntimemonoandroid
dotnet/runtime
Feb 2017 - Jan 2020
.NET is a cross-platform runtime for cloud, mobile, desktop, and IoT apps.
Role in this project:Back-end Developer & System Architect
Back-end Developer & System ArchitectContributions:64 commits, 3 comments in 2 years 11 months
Contributions summary:Calvin primarily focused on low-level system programming within the .NET runtime, evident through their involvement in fixing issues related to argument output with tracing enabled and implementing a dladdr shim for gmodule. Their contributions also involved platform-specific code, particularly for AIX and PowerPC architectures, demonstrating a deep understanding of system internals and cross-platform compatibility. They addressed build issues and memory management concerns while updating the platform's testing infrastructure.
dotnetruntimelinuxcsharpxamarin
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.