Free Software Contributions
- Contributor:
- Emacs, Clojure, TIC-80, GotoSocial, Pleroma, Clojars, Microscheme, Ruby, Magit, and more
- Creator:
- Leiningen, Emacs Starter Kit, antifennel, Atreus, Grenchman, Bus Scheme, and several games
- Maintainer:
- Fennel, Logplex, Swank Clojure, Clojure Mode, and package.el
Spotlight: As the lead developer of the Fennel compiler, I took the project from being a quick prototype to a language with an active, vibrant community. I prioritized user feedback, writing detailed documentation. Growing the language has been a careful and deliberate process where I have collaborated with users to consider every alternative and cost before introducing features.
Work Experience
CircleCI Staff Engineer Yefreitor December 2016 - present
- Replaced a flat-rate billing system with a metered usage system which more accurately reflected the value that customers received for their money. Architected data flows across a distributed system using queues to ensure reliable delivery of events.
- Led migration to a more reliable billing provider, reducing bugs related to charging and allowing the engineering team to focus on shipping features instead of tracking down discrepancies.
- Mentored new hires including training several people with no Clojure experience to be able to contribute productively to systems written in Clojure.
Atreus Keyboards Founder December 2014 - January 2020
- Created and documented a design for a small ergonomic keyboard to be constructed from readily-available DIY parts.
- Wrote three USB keyboard firmwares for the ATMega32u4 chip.
- Started and ran a small business selling and supporting kits and keyboards to a worldwide customer base which I later sold.
Heroku Senior Engineer October 2011 - December 2014
- Took over maintenance of the log pipeline infrastructure using Erlang's high-availability features to deliver app output as reliably as possible.
- Owned the adapter for building Clojure applications on the Heroku platform and evolved it in parallel to new Leiningen releases.
- Maintained the deployment pipeline which handled git pushes used to deploy every application running on Heroku.
Sonian Senior Engineer April 2009 - September 2011
- Helped design and implement a document parsing, indexing, and archival pipeline in Clojure which functioned at petabyte level.
- Developed Leiningen project automation tool originally for our in-house needs, which got turned into a public project with hundreds of contributors and hundreds of thousands of users.
Other
Voraciously self-taught. Currently working thru the nand2tetris course.
Presented at several professional conferences and local meetups.
Bachelor of Science degree in Computer Science, Magna Cum Laude.
Spoken languages: English (native), Indonesian (intermediate), Mandarin (beginner), and Thai (beginner).
Fully remote since 2009.
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