Lev Walkin
Senior Software Engineering Manager at Apple
San Jose, California, United States
Summary
🤩
Rockstar🎓
Top SchoolLev Walkin is a senior software engineering manager with 22 years of experience leading large-scale distributed storage, compute, and infrastructure performance teams, currently at Apple in San Jose. He blends hands-on systems engineering—contributions to foundational C projects like an ASN.1 compiler and libdill—with senior leadership that has spanned startups (founder/CTO), large platforms, and R&D for mission-critical systems. Known for improving stability, memory safety, and test infrastructure, he has a track record of shipping robust tooling (including tcpkali) and scaling services to billions of API calls. His background includes applied research for NASA and secure, high-performance networking work at Netli and Cisco, plus patents in real-time messaging architecture. Pragmatic and detail-oriented, he often focuses on subtle correctness improvements (e.g., sanitizer support, sin_len fixes, descriptor leak repairs) that prevent production outages.
21 years of coding experience
24 years of employment as a software developer
M.S. Computer Science, M.S. Computer Science at Ulyanovsk State Technical University
Stackoverflow
111reputation
4kreached
6answers
0questions
Github Skills (27)
ninja10
debug10
filesystem10
testing10
memory-management10
build-system10
c1110
file-operations10
c1710
structured-concurrency10
dns10
asn110
fileio10
swift10
error-handling10
Programming languages (13)
Github contributions (5)
vlm/asn1c
Jun 2004 - Jul 2020
The ASN.1 Compiler
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 releases, 2301 commits, 79 PRs in 16 years 3 months
Contributions summary:Lev primarily contributed to the C code base of the ASN.1 compiler, particularly check and error handling, and the functionality of managing the generated structure. Their commits focused on fixing issues related to integer parsing, data integrity, and memory management. They also worked on refactoring existing code, indicating a focus on improving the stability and correctness of the compiler's internal processing.
compilerasn-1asn
swiftlang/swift-llbuild
Sep 2019 - Nov 2019
A low-level build system, used by Xcode and the Swift Package Manager
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:1 review, 56 commits, 39 PRs in 1 month
Contributions summary:Lev primarily contributed to enhancing the testing infrastructure within the `swift-llbuild` repository. Their work focused on fixing output expectations in various tests, modifying existing test files to correctly assert the expected behavior of the build system. They addressed issues in tests related to tracing, cycle detection, and dependency formatting, ensuring the reliability and accuracy of the testing framework.
xcodeswift-package-managerclangbazelllbuild
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