Tetsuharu Ohzeki
Senior Software Engineering at Freelance
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolTetsuharu Ohzeki is a senior software engineer based in Tokyo with 12 years of experience building high-performance web systems, developer tooling, and CI/CD pipelines across startups and large media companies. He pairs deep Web-spec knowledge and senior-level JavaScript/TypeScript expertise with a decade of Rust experience—contributing to projects like Servo and rust-analyzer—and practical Go and embedded WebAssembly work for CDN edge applications. His recent freelance work includes migrating CDN layers to Fastly Compute with Rust, modernizing large React/Node codebases, and establishing team coding standards and static analysis rule-sets. Known for improving build performance and observability through Web-engine-inspired practices, he also has a long track record in open source spanning WebKit, Firefox, RxJS and major Rust tooling.
12 years of coding experience
10 years of employment as a software developer
Bachelor of Arts (B.A.), Drama and Theatre Arts, Bachelor of Arts (B.A.), Drama and Theatre Arts at 明治大学
Japanese, English
Github Skills (46)
webbrowser10
dependency-management10
javascript10
servo10
typescript10
s610
browser10
vscode-extension10
webengine10
rxjs10
lang10
compiler-compiler10
esmodules10
typescript-types10
compiler10
Programming languages (16)
Github contributions (5)
rust-lang/vscode-rust
Jan 2017 - Dec 2019
Rust extension for Visual Studio Code
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:45 commits, 16 PRs, 24 comments in 2 years 11 months
Contributions summary:Tetsuharu primarily focused on enhancing the Rust extension for Visual Studio Code. They implemented features such as enabling strict type checking for TypeScript and enabling more linting options built into the compiler. The user also refactored the project by introducing promise wrappers for child_process modules and cleaning up the rustup.ts file with promise-based operations. Furthermore, the user added the functionality to provide default build tasks and updated task configurations.
visual-studio-coderustvscode-extensionvscodeintellisense
rust-lang/rust-analyzer
Dec 2019 - Feb 2024
A Rust compiler front-end for IDEs
Role in this project:Back-end Developer
Back-end DeveloperContributions:11 reviews, 22 PRs, 32 comments in 4 years 2 months
Contributions summary:Tetsuharu primarily contributed to the `rust-analyzer` project by implementing and enabling various TypeScript and Rust compiler options. They focused on integrating features related to code quality and error prevention, specifically around unused parameters, implicit returns, and unchecked indexed access. These contributions involved modifying and improving code across multiple files, including test utilities and command executions within the editors folder.
rustlsp-servercompileridefront-end
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