Mary Cook - Software Engineer at Notion

Mary Cook

Software Engineer at Notion

San Francisco, California, United States

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Summary

🤩

Rockstar

🎓

Top School

Mary Cook is a seasoned software engineer with 16 years of experience building developer-facing and creative tools, now at Notion in San Francisco. She has led product engineering and technical teams at Airtable and Makers, coached hundreds of bootcamp students, and shipped production systems at companies from Pusher to Ableton. Her work spans full-stack JavaScript, languages and compilers (including a child-friendly language and a bytecode VM), and deep explorations of Git internals—she even ported Git to JavaScript and implemented three-way merges in a learning repo. Mary thrives on small teams shaping nascent products and on reinventing how people interact with computers through educational and creative tooling. Colleagues know her as a pragmatic coach who pairs product intuition with low-level technical craftsmanship.

16 years of coding experience

14 years of employment as a software developer

Master's and Bachelor's (combined) Computer Software Engineering, Master's and Bachelor's (combined) Computer Software Engineering at The University of Sheffield

Stackoverflow

Stats

365reputation

22kreached

2answers

3questions

Github Skills (23)

git10

javascript10

lib10

testing10

websocket10

version-control10

state-management10

nodejs10

code-readability10

code-optimization9

html9

data-structures8

data-structure8

front-end-development8

algorithms8

Programming languages (5)

ShellJavaScriptHTMLRubyPython

Github contributions (5)

maryrosecook/gitlet

Aug 2014 - Nov 2018

Git implemented in JavaScript

Role in this project:

Back-end Developer

Contributions:997 commits, 15 PRs, 161 pushes in 4 years 4 months

Contributions summary:Mary focused on implementing the core functionality of a Git implementation in JavaScript. Their contributions included implementing the `init()` method, writing tests, and creating the essential directory structure. The user also implemented the `hash_object()` function, as well as supporting the operations of adding and removing files to the index. Furthermore, the user worked on the three-way merge functionality, including creating the appropriate index and working copy file structures during merging, which suggests solid understanding of Git's internal mechanics.

javascript

pusher/pusher-js

Jul 2011 - May 2012

Pusher Javascript library

Role in this project:

Full-stack Developer

Contributions:138 commits in 10 months

Contributions summary:Mary primarily contributed to the Pusher Javascript library, focusing on the connection management aspects. They modified the connection state machine, added support for online/offline events, and fixed bugs related to reconnection and send failures. Furthermore, the user updated the light demo to utilize new events and the local development server.

javascriptjavascript-librarypusher

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