Yuki Okushi
Software Engineer at MOSH, Inc.
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top School
Top expert inRust Ecosystem Development
Yuki Okushi is a software engineer based in Osaka with nine years of experience building backend and platform systems, specializing in Google Cloud, Go, and TypeScript. He is an active maintainer and contributor in the Rust ecosystem—working on high-profile projects like the Rust compiler, rustfmt, clippy, libc, and crates.io—bringing deep expertise in low-level, cross-platform and safety-critical code. His open-source work shows a consistent focus on code quality, tooling, and maintainability (fixing clippy warnings, refactors, and dependency upgrades) as well as architecture-specific optimizations for x86 and wasm32. In production roles he has bridged backend and DevOps responsibilities, improving CI/CD and test-infra for large projects such as Kubernetes test-infra. Colleagues know him as a meticulous engineer who pairs pragmatic platform work with language-level contributions—effectively shipping reliable systems while shaping the tools other developers use. Outside work he contributes to Japanese localization of the Rust website, blending technical depth with community and documentation efforts.
9 years of coding experience
4 years of employment as a software developer
クラーク記念国際高等学校
Japanese, english (american)
Github Skills (99)
dependency-management10
multithreading10
image-processing10
compiler-development10
testing10
language-server-protocol10
c1110
actix-web10
intermediate-code10
refactor10
c1710
j10
linter10
linting10
actor10
Programming languages (28)
Github contributions (5)
rust-lang/libc
Feb 2020 - Jan 2023
Raw bindings to platform APIs for Rust
Role in this project:
Backend Developer
Backend DeveloperContributions:58 releases, 1088 reviews, 491 commits in 2 years 11 months
Contributions summary:Yuki primarily focused on modifying build configurations and test definitions within the `libc` repository, a project providing raw bindings to platform APIs for Rust. Their contributions centered around adapting the build process to handle deprecated headers, and target-specific configurations on various platforms (GNU, Android, macOS), demonstrating expertise in platform-specific build systems and adapting code to different operating environments. They also worked on test-related configurations, including test skipping and test fixes, suggesting a focus on code quality and ensuring cross-platform compatibility. The user shows experience in adapting to and resolving compatibility issues caused by changes in newer versions of the Linux kernel and glibc.
rust
actix/examples
Aug 2019 - Dec 2022
Community showcase and examples of Actix Web ecosystem usage.
Role in this project:Backend Developer
Backend DeveloperContributions:46 reviews, 61 commits, 134 PRs in 3 years 4 months
Contributions summary:Yuki primarily contributed to the actix-web examples repository by fixing clippy warnings and addressing code style issues. They made changes across multiple examples, including jsonrpc, websocket, and template examples, ensuring code quality and consistency. Additionally, the user addressed a few minor issues, such as fixing a favicon link, updating a user guide link, and correcting test examples.
actix-webrustactix
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