Sean Lynch
Co-founder And Software Engineer at IOP Systems
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolSean Lynch is a Co-founder and Software Engineer based in San Francisco with seven years of experience building high-performance systems and developer tooling. He’s contributed notably to Twitter’s pelikan unified cache—refactoring Rust bindings, driving an async-await core, and strengthening CI—bringing practical Rust expertise to large-scale caching and backend infrastructure. Sean’s internships at Facebook and Twitter focused on performance and capacity, delivering SIMD-accelerated serialization that improved an ads ranking service by 28% and speeding large model loads 4x, evidence of a strong systems-performance pedigree. Now leading engineering at IOP Systems, he combines startup grit with production-hardened experience from major platforms, and has a track record of turning proofs-of-concept into fleet-ready services.
7 years of coding experience
2 years of employment as a software developer
Software Engineering, Software Engineering at University of Waterloo
Github Skills (7)
asynchronous10
caching10
rust10
back-end-development10
cicd10
async10
build-automation9
Programming languages (8)
Github contributions (5)
twitter/pelikan
Sep 2019 - Oct 2022
Pelikan is Twitter's unified cache backend
Role in this project:
Back-end Developer & DevOps Engineer
Back-end Developer & DevOps EngineerContributions:7 reviews, 21 commits, 50 PRs in 3 years 1 month
Contributions summary:Sean's primary focus was on enhancing the `twitter/pelikan` unified cache backend, with a strong emphasis on the Rust implementation of the project. They refactored and expanded the rust bindings for core components, including the memcached protocol and hotkey libraries. Moreover, the user played a key role in the project's modernization, as shown by the transition towards an async-await based core, along with the integration of a more robust CI process.
cache-backendcachingbackendcachetwitter
swlynch99/rpc-perf
Oct 2019 - Sep 2021
A tool for benchmarking RPC services
Contributions:1 PR, 30 pushes, 6 branches in 1 year 11 months
benchmarkrpcbenchmarking
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