Phil Freeman
Software Engineer at Hasura
Los Angeles, California, United States
Summary
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Rockstar
Top expert inFunctional Programming and Formal Verification Technologies
Phil Freeman is a software engineer with 15 years of experience who created the PureScript compiler and authored its definitive book, blending deep functional programming expertise with practical engineering. Based in Los Angeles, he contributes across the stack—from designing declarative, type-safe UIs in purescript-halogen to implementing high-performance backend features like batched GraphQL queries for Hasura. A longtime Haskeller and programming-language enthusiast, he focused on tooling and automation for PureScript package management and has a knack for refactoring complex build and caching systems. Phil’s work shows a rare combination of language design, compiler-level thinking, and end-to-end application development that consistently improves developer ergonomics and runtime reliability.
15 years of coding experience
Stackoverflow
4,189reputation
56kreached
65answers
0questions
Github Skills (33)
back-end-development10
package-management10
purescript10
ui-design10
wpgraphql10
uid10
front-end-development10
wordpress-graphql10
html10
graphql10
functional-programming10
web-development10
haskell10
postgresql9
git9
Programming languages (19)
Github contributions (5)
paf31/purescript-book
Jul 2014 - Sep 2017
Sources for the PureScript book
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:139 commits, 24 PRs, 84 pushes in 3 years 2 months
Contributions summary:Phil's commits primarily involve refactoring and updating the source code for the PureScript book. They moved source files, removed outdated code, and updated dependencies. The user also added UI elements and event handling to an address book application and provided initial code for a 2D graphics demo using canvas.
purescript
purescript-halogen/purescript-halogen
Feb 2015 - May 2015
A declarative, type-safe UI library for PureScript.
Role in this project:Front-end Developer
Front-end DeveloperContributions:4 releases, 158 commits, 39 PRs in 3 months
Contributions summary:Phil implemented a declarative UI library for PureScript, as indicated by the initial commits and code changes. These commits focused on building the core logic for defining a state machine, rendering, and folding state management. The user added functions, data structures, and components specific to the UI library, with examples of HTML elements.
purescripttypesafeui
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