I’m Evan Hahn, a computer programmer.

Work

• Ghost: nonprofit OSS platform for independent publishers (current job)
• Awana Digital: nonprofit OSS peer-to-peer app for Indigenous land
• Signal: nonprofit OSS encrypted messenger
• Airtable: user-friendly database
• Braintree: payments
• several other places

Open source

• Helmet.js: HTTP header security, 400+ million downloads in 2026
• HumanizeDuration.js: turns milliseconds into duration strings
• UTF-21: toy character encoding
• dotfiles: system config maintained for ~15 years
• hundreds more

Writing

• “The world’s smallest PNG”
• “I set all 376 Vim options and I’m still a fool”
• “The lone developer problem”
• “How I build software quickly”
• “Why does ‘👩🏾‍🌾’ have a length of 7 in JavaScript?”
• hundreds more blog posts

Books:

• Express in Action: published by Manning
• JavaScript Testing with Jasmine: published by O’Reilly

Contact

• Email: me@evanhahn.com
• Signal: EvanHahn.64
• Mastodon: @EvanHahn@bigshoulders.city
• other ways