Charles Pick - Founder at codemix

Charles Pick

Founder at codemix

York, England, United Kingdom

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Summary

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Rockstar

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Top School

Charles Pick is a founder and full-stack engineer with 15 years of experience building high-traffic web applications and developer tools from York, England. He founded codemix to capture product intent and orchestrate coding agents so humans and AI reliably build the right thing, and he still ships core open-source libraries under that umbrella. His background spans front-end React and accessibility work at Anaplan, deep PHP/Yii and infrastructure expertise across multiple firms, and performance-minded JavaScript contributions like codemix/fast.js. Notably he’s bridged legacy systems to modern stacks with zero-downtime migrations and has improved developer ergonomics through TypeScript typings for projects like Peggy. Practical, product-focused and hands-on, he combines entrepreneurship with a habit of optimizing for speed, compatibility and maintainability.

15 years of coding experience

7 years of employment as a software developer

Pocklington School

Computer Studies, National Diploma, Computer Studies, National Diploma at York College

English

Stackoverflow

Stats

3reputation

499reached

0answers

2questions

Github Skills (24)

yii10

parserator10

caching10

javascript10

benchmark10

parser10

testing10

typescript10

benchmarking10

peg10

type-definition10

php-framework10

php10

parser-generator10

performance-optimization10

Programming languages (7)

TypeScriptJavaRustOCamlJavaScriptPHPHTML

Github contributions (5)

codemix/fast.js

Jun 2014 - Jan 2019

Faster user-land reimplementations for several common builtin native JavaScript functions.

Role in this project:

Full-stack Developer

Contributions:162 commits, 9 PRs, 5 pushes in 4 years 7 months

Contributions summary:Charles contributed significantly to the `codemix/fast.js` repository, which focuses on faster implementations of common JavaScript functions. Their primary focus was on enhancing the library's functionality, as evidenced by the addition of new methods such as `fast.pluck()`, `fast.keys()`, and `fast.values()`. They also improved the performance of existing functions and introduced benchmarking tools for evaluating the performance of the library. Furthermore, the user's work included ensuring the library's compatibility across different JavaScript environments.

javascript-functionsv8-javascript-enginesimplexjavascriptbuiltin

peggyjs/peggy

Nov 2020 - Apr 2021

Peggy: Parser generator for JavaScript

Role in this project:

Full-stack Developer

Contributions:1 release, 19 reviews, 20 commits in 5 months

Contributions summary:Charles primarily contributed to the TypeScript type definitions for the Peggy parser generator, which is directly relevant to the project's core purpose. They added comprehensive type definitions including interfaces, types, and namespaces to define the API of the parser, improving its usability with TypeScript projects. Additionally, they refactored existing type definitions to ensure backwards compatibility with PEGjs, demonstrating a good understanding of code maintenance and the project's evolution. The user also removed unnecessary files and added an .npmignore file to streamline the project's distribution.

javascriptgrammarpegparser-generatornodejs

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