Michael Sweeney
Advanced JS/TS and React specialist. Building scalable design systems, performance-minded architecture, and developer experience tools that impact organizations at scale.
$ whoami
Valtio core maintainer
Creator of valtio-plugin, valtio-persist, valtio-zod, valtio-fsm as well as some experimental libraries: ripplio, pipetype, and synpatico protocol
——— ABOUT
I'm a Staff+/Principal-level frontend leaning / platform engineer with deep expertise in advanced JavaScript/TypeScript and React. I'm a core maintainer of valtio and have authored several of it's eco-system libraries.=
My work spans design systems at scale, complex migrations and tooling (codemods, ESLint, Storybook), performance-minded architecture, and library development with a focus (though not limited to) React.
I’m currently developing Synpatico, a collection of libraries and tools that transparently compress JSON payloads, prune dead data from REST calls, and provide the most fine-grained api analytics available anywhere — all without requiring any code changes for the user. I'm also working on some new dev tools and other exciting new additions to the valtio eco-system (at least I hope). I'll be writing and sharing what I can as time permits,
——— PROJECTS
Valtio
Open SourceCore maintainer of popular React state management library with proxy-based reactivity.
View Project →Ripplio
LibraryFine-grained reactivity system for building performant user interfaces.
Pipetype
ToolBitmask/union validators for TypeScript with advanced type inference.
Synpatico
FrameworkValues-only transport system with core/client/genome architecture.
valtio-plugin
PluginPlugin system for extending Valtio with custom functionality.
valtio-persist
PluginPersistence layer for Valtio state with multiple storage adapters.
> writing
Technical articles, architecture guides, and deep-dives into frontend engineering, state management, and developer experience optimization.
——— CONTACT
Interested in discussing frontend architecture, state management, or potential collaboration? I'm always open to connecting with fellow engineers and exploring new opportunities.