Harold Treen
Software Engineer at Facebook
New York, New York, United States
Summary
🤩
Rockstar🎓
Top SchoolHarold Treen is a software engineer with 12 years of experience building full-stack web services and developer tools, currently at Facebook after impactful engineering roles at Squarespace. He has shipped production systems spanning Django, React, Kubernetes, Airflow and SLO-driven reliability work, and helped launch revenue-generating Marketplace and security-improving LDAP automation at Squarespace. An active open-source contributor, he improved the popular readability tool and added robust parsing, metadata extraction and regression tests to make web-to-ebook conversion more reliable. Harold blends hands-on engineering with community mentorship—he attended and later taught at the Recurse Center, led testing working groups, and runs workshops on testing and communication. Based in New York, he balances technical depth with wide-ranging creative interests from dance to cooking, reflecting a collaborative, curious approach to problem solving.
12 years of coding experience
7 years of employment as a software developer
Ontario High School Diploma, Ontario High School Diploma at Ursula Franklin AcademyBachelor of Applied Science (B.A.Sc.), Major in Computer Engineering with Professional Internship, Bachelor of Applied Science (B.A.Sc.), Major in Computer Engineering with Professional Internship at Queen's University
English, French, Spanish
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (5)
html10
readability10
javascript10
regex10
testing9
Programming languages (6)
Github contributions (5)
luin/readability
Apr 2016 - May 2020
📚 Turn any web page into a clean view
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:26 commits, 16 PRs, 9 pushes in 4 years 1 month
Contributions summary:Harold primarily contributed to improving the functionality of the readability project. They focused on enhancing the parsing of web pages by adding features for extracting sections, chapters, and titles from meta tags. They addressed specific parsing issues, including fixes for blogspot and adjustments to regex patterns. The user also implemented a regression test suite to validate the extraction of content from various websites.
javascriptweb-pagecleanhtml5gbk
haroldtreen/coding-problems
Jan 2017 - Mar 2017
Contributions:70 commits, 56 pushes, 1 branch in 1 month
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