Matthew Jeffryes
Chief Technology Officer at Samwise
Moscow, Idaho, United States
Summary
🤩
Rockstar🎓
Top SchoolMatthew Jeffryes is a seasoned technology leader and distributed systems engineer with 14+ years of experience building high-throughput, reliable services and developer-facing infrastructure. As a former Staff Engineer at Twitter and Stripe and a Principal Engineer at Pulumi, he blends language and tooling design with cloud-native and serverless architectures to make complex systems easy to develop and operate. He has led teams scaling services from hundreds of thousands to millions of requests per second, designed KV-store and cache abstractions, and reduced operational and privacy risk through pragmatic centralization. Founder and CTO experience includes shipping real-time vehicle diagnostics, mobile and web clients, and end-to-end serverless SaaS solutions. An active open-source contributor, his work on Twitter’s util libraries improved flag handling, activity lifecycle, and memoization for widely used JVM tooling—evidence of a focus on developer ergonomics as much as system resiliency. Based in Moscow, Idaho, he pairs functional-programming sensibilities with hands-on engineering to make hard distributed problems tractable.
14 years of coding experience
19 years of employment as a software developer
B.S. Engineering, B.S. Engineering at Harvey Mudd College
Github Skills (8)
finagle10
scala10
functional-programming9
algorithms8
data-structures8
algorithm8
data-structure8
unit-test8
Programming languages (15)
Github contributions (5)
twitter/util
Jan 2013 - Sep 2017
Wonderful reusable code from Twitter
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits in 4 years 8 months
Contributions summary:Matthew primarily contributed to the `util` repository by enhancing the `com.twitter.app` and `com.twitter.util` packages. Their work included refactoring and adding features to the `Flag` and `App` components, such as handling undefined flags, passing default values, and treating "--" as the end-of-flags indicator. They also implemented and fixed functionality related to the `Activity` class, including adding a `stabilize` method and fixing `mapState`. Additionally, the user improved memoization functionality in `Memoize` with reentrancy protection and Function2 support.
finaglecontinuationplay-frameworkplayframeworkscala
pulumi/action-release-by-pr-label
Sep 2023 - Oct 2024
A github action for managing releases based on labels applied to PRs
Contributions:9 PRs, 44 pushes, 10 branches in 1 year 1 month
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