Sean Mcarthur

Irvine, California, United States

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Summary

🤩

Rockstar

Sean Mcarthur is an Independent Open Source Engineer based in Irvine, California with 14 years of experience and the primary maintainer of hyper.rs and several core Rust networking crates. He specializes in low-level async networking and protocols—working on HTTP/1.x parsing, HTTP/2 flow control, HTTP/3/QUIC, and runtime I/O optimizations for Tokio—while also building developer tooling like the tokio console. His career spans production roles at Mozilla, Buoyant/Linkerd, and AWS, where he applied protocol and proxy expertise to real-world systems. Sean’s contributions blend systems-level fixes (window management, lost-waker detection, readv/writev optimizations) with API and ergonomics work in frameworks and clients such as warp and reqwest. Now self-employed, he sustains the Rust networking ecosystem through maintenance, performance tuning, benchmarks, and community-focused examples (see seanmonstar.com/sponsor).

15 years of coding experience

16 years of employment as a software developer

Github Skills (98)

benchmark10

node-js10

flow-control10

multithreading10

atomics10

testing10

http10

authentication10

httpc10

mio10

hyper10

http-client10

http210

cookies10

http1-010

Programming languages (18)

JavaC++CSSRustCFluentGoHTML

Github contributions (5)

hyperium/http

May 2017 - Jun 2022

Rust HTTP types

Role in this project:

Back-end Developer

Contributions:15 releases, 114 reviews, 129 commits in 5 years 1 month

Contributions summary:Sean primarily focused on enhancing the `http` library by introducing new features and improving existing components. Their work included refactoring the `Request` struct, adding a `Response` type, and incorporating `Extensions` to both `Request` and `Response` to store extra data. The user also refined the `Version` struct and fixed URI parsing, demonstrating a focus on refining core HTTP types within the library.

rustio-uringhttp-types

seanmonstar/warp

Mar 2018 - Sep 2022

A super-easy, composable, web server framework for warp speeds.

Role in this project:

Back-end Developer

Contributions:32 releases, 77 reviews, 335 commits in 4 years 6 months

Contributions summary:Sean contributed to the development of the warp web server framework, focusing on path matching, request handling, and other core functionalities. Their work included implementing filters for handling HTTP methods, parsing parameters from paths, and defining types for representing the components of a request. They also designed and implemented features like content-length limits, SSE (Server-Sent Events) support, and customized responses using JSON bodies.

web-serverrustwarpframeworkserver-framework

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