Jason Molenda
Programmer at Apple Inc.
San Jose, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJason Molenda is a seasoned programmer with 28 years of experience, currently applying deep low-level and build engineering expertise at Apple in San Jose. He has a long history working on debuggers and toolchains, contributing to high-profile open-source projects such as LLVM/LLDB and the Swift LLDB port, where his work focused on efficient memory handling, breakpoint robustness, and improving debugger APIs. Jason combines pragmatic engineering with care for build systems and test infrastructure, often refactoring tests and fixing build configurations to improve reliability. His background includes early systems work at Cygnus, giving him a strong foundation in compiler and toolchain technology. He holds a BA in Japanese from the University of Minnesota, an unusual humanities complement to a technical career that hints at strong communication and cross-cultural skills. Colleagues rely on him for quiet, expert problem solving that reduces runtime overhead and hard-to-diagnose low-level bugs.
28 years of coding experience
7 years of employment as a software developer
BA, Japanese, BA, Japanese at University of Minnesota
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (15)
llvm10
debugging10
build-system10
c-language10
assembly10
cmake10
cprogramming-language10
lldb10
x8610
api-design9
mach-o9
arm9
test-automation7
objective-c7
appcode6
Programming languages (7)
Github contributions (5)
apple/swift-lldb
Nov 2015 - Oct 2019
This is the version of LLDB that supports the Swift programming language & REPL.
Role in this project:
Back-end Developer & Build Engineer
Back-end Developer & Build EngineerContributions:589 commits, 134 PRs, 408 pushes in 4 years
Contributions summary:Jason's commits indicate a focus on debugging and maintaining the LLDB debug server, demonstrating a deep understanding of the low-level architecture. The contributions primarily revolve around reducing memory reads and improving efficiency within the debugger and debugging tools. Additionally, the user demonstrates build engineering skills by handling dependencies, improving code quality, and correcting incorrect configurations in the tools and the build process.
lldbprogramming-languageswift
llvm/llvm-project
Jan 2023 - Jan 2023
The LLVM Project is a collection of modular and reusable compiler and toolchain technologies.
Role in this project:Back-end Developer
Back-end DeveloperContributions:376 reviews, 1 commit, 201 PRs in 1 day
Contributions summary:Jason primarily worked on the LLDB debugger within the LLVM project, focusing on low-level debugging tasks. Their contributions involved fixing and enhancing SWIG docstring annotations for the SB API methods, refactoring test code, and modifying the build process to better handle shared cache binaries. They added new API methods like `GetValueAsAddress` to handle pointer values and fixed potential issues with breakpoint handling.
compilerllvmtoolchain
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