Christian Alfoni
Principal Engineer at Together AI
Trondheim, Trøndelag, Norway
Summary
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RockstarChristian Alfoni is a Principal Engineer with 12+ years crafting developer-focused web platforms, currently shaping cloud IDE and AI tooling at CodeSandbox and Together AI. Self-taught in JavaScript, he evolved from fixing bugs to architecting complex SPAs and state management systems, leading notable open-source projects like Overmind, Cerebral, and IMPACT-REACT. He pairs deep expertise in state and side-effect architectures with pragmatic tooling work—webpack workflows, build pipelines, and developer ergonomics—and has driven major migrations and modernizations in large client codebases. Christian’s contributions to Stitches and Next.js examples show a rare blend of design-minded CSS-in-JS and practical integration experience, and his GitHub history includes foundational libraries such as formsy-react and key CodeSandbox importer improvements. He also shares knowledge through talks, blog posts, and YouTube content, making him as much a community educator as a hands-on builder.
12 years of coding experience
7 years of employment as a software developer
English, Norwegian
Github Skills (35)
babel610
git10
hotswap10
javascript10
apidoc10
ui-components10
testing10
hot-module-replacement10
css10
css-in-js10
typescript10
nextjs10
webpack10
component-kit10
api10
Programming languages (10)
Github contributions (5)
stitchesjs/stitches
Apr 2020 - Sep 2020
[Not Actively Maintained] CSS-in-JS with near-zero runtime, SSR, multi-variant support, and a best-in-class developer experience.
Role in this project:
Front-end Developer
Front-end DeveloperContributions:302 commits, 11 PRs, 291 pushes in 4 months
Contributions summary:Christian's primary contributions focused on the development and maintenance of a CSS-in-JS library, likely for front-end development. Their commits involved creating types, fixing tokens and screens, handling pseudo-classes, and addressing build issues, indicating a deep understanding of the library's internal structure and API. They added new features, tests and refactored the codebase to improve specificity and injection of stylesheets, making it more performant and developer-friendly.
reactstitcheszerocssruntime
cerebral/cerebral
May 2015 - Sep 2021
Declarative state and side effects management for popular JavaScript frameworks
Role in this project:Front-end Developer
Front-end DeveloperContributions:32 releases, 1 review, 1240 commits in 6 years 5 months
Contributions summary:Christian primarily focused on test-related changes, including removing deprecation warnings and reorganizing test files, likely related to improving the stability and maintainability of the test suite. They also contributed to signal registration by adding specific tests for signal types, registering sync signals, and namespaced signals, which is typical of someone building a state management library and understanding its intricacies. The user's contributions indicate a focus on component-based architectures and managing the state of complex user interfaces through functional component design
reactstate-managementjavascriptdeclarativeside-effects
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