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I’m Evan Hahn, a computer programmer.

I work at Digital Democracy, building peer-to-peer software to help frontline
communities defend their environmental and human rights. In the past, I’ve
worked at:

 * Signal, the encrypted messenger, building their iOS and Windows/macOS/Linux
   apps
 * Airtable, the low-code database product, maintaining their REST API and
   running their bug bounty program
 * several other places

I maintain some open source projects:

 * Helmet.js, a web security module, is my most popular with over 167 million
   downloads in 2023
 * Humanize Duration turns milliseconds into duration strings
 * UTF-21, a toy character encoding
 * see more

I’ve written a few things:

 * Express in Action, a Manning book
 * JavaScript Testing with Jasmine, an O’Reilly book
 * “A decade of dotfiles”
 * “The lone developer problem”
 * “The world’s smallest PNG”
 * “Why does ‘👩🏾‍🌾’ have a length of 7 in JavaScript?”
 * read more

I would love to hear from you. You can contact me:

 * Email: me@evanhahn.com
 * Mastodon: @EvanHahn@bigshoulders.city
 * other ways