Dave Lee
Debugging Engineer at Apple
Menlo Park, California, United States
Summary
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RockstarDave Lee is a debugging engineer with 15 years of systems and compiler-focused software engineering experience, currently building debugging tools at Apple in Menlo Park. He has deep back-end and tooling expertise across LLVM/Clang, LLDB, and the Swift compiler, contributing practical improvements to demangling, IndexStore, and custom formatters that enhance diagnostics for large codebases. Prior roles at Lyft and Facebook reflect experience scaling build systems and developer tooling, including significant Bazel and rules_swift work to improve reproducible builds and codesigning for Apple platforms. An active open-source contributor, he authored AST matchers and Objective-C mangling fixes in clang and added high-impact LLDB commands for iOS debugging, showing a rare blend of compiler internals knowledge and hands-on mobile debugging. Colleagues would describe him as someone who reliably translates deep language and toolchain theory into maintainable, production-ready developer tools.
15 years of coding experience
7 years of employment as a software developer
Github Skills (52)
debugging10
objective-c10
debug10
c-language10
ios10
python10
scripting10
compiler-development10
git-repository10
build-system10
lldb10
enums10
header-files10
reactivecocoa10
xcode10
Programming languages (22)
Github contributions (5)
facebook/chisel
Mar 2014 - Mar 2020
Chisel is a collection of LLDB commands to assist debugging iOS apps.
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:9 releases, 129 commits, 124 PRs in 6 years
Contributions summary:Dave primarily contributed to the `chisel` project, an LLDB debugging tool for iOS apps, by enhancing existing commands and adding new functionalities. Their work focused on improving the `bmessage` and `visualize` commands, fixing exceptions, and adding new commands such as `findinstances` and `heapfrom`. The user also addressed several bugs and made various improvements to expression evaluation and error handling within the tool.
objective-clldb-commandslldbloggingassist
ReactiveCocoa/ReactiveCocoa
Apr 2013 - May 2015
Cocoa framework and Obj-C dynamism bindings for ReactiveSwift.
Role in this project:Back-end Developer
Back-end DeveloperContributions:224 commits, 17 PRs, 32 pushes in 2 years 1 month
Contributions summary:Dave primarily contributed to the `reactivecocoa/reactivecocoa` repository by refactoring and adding methods to the NSObject+RACLifting category. These changes focused on enhancing method and block lifting capabilities, providing more flexible ways to integrate reactive signals with existing methods. The user also extracted common lifting logic into a single function and added tests and documentation for the array-based variants of the lifting methods.
objective-cobj-creactivecocoareactiveswiftswift
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