Jeremy Daer
Programmer at 37signals
San Diego, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJeremy Daer is a seasoned programmer with 21 years of experience based in San Diego, currently developing at 37signals since 2007. He’s a pragmatic back-end and DevOps engineer with deep expertise in the Ruby/Rails ecosystem—contributing to foundational projects like Rails, Rack, Bundler, RubyGems, and Redis clients. His work spans performance optimization, security and SSL improvements, deployment automation with Docker/Traefik, and improving developer tooling such as the Spring preloader and Resque worker management. Jeremy has a strong test-automation and QA sensibility, routinely improving test coverage and reliability across libraries. Notably, his open-source contributions include both subtle refactors that reduce runtime allocations and higher-impact fixes addressing deadlocks and compatibility across Ruby versions. A Caltech-trained problem-solver, he combines long-term product stewardship with practical infrastructure and performance engineering.
21 years of coding experience
California Institute of Technology
Github Skills (81)
dependency-management10
statsd10
package-management10
testing10
rspec10
process-management10
background-worker10
webpages10
web-content10
ruby10
ubuntu10
security10
bundler10
profiling10
activerecord10
Programming languages (20)
Github contributions (5)
mikel/mail
Nov 2009 - Jan 2023
A Really Ruby Mail Library
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 reviews, 394 commits, 298 PRs in 13 years 3 months
Contributions summary:Jeremy made several commits to improve and maintain the Ruby mail library. The contributions include removing dead code, initializing instance variables explicitly, improving code readability by relying on Active Support's blank? method, and fixing encoding and quoting issues. The user also ensured correct line ending handling for both Base64 and Quoted-Printable encodings, and fixed a bug in regards to setting a default content type.
ruby
rails/activeresource
Aug 2006 - Feb 2018
Connects business objects and REST web services
Role in this project:Back-end Developer
Back-end DeveloperContributions:131 commits, 14 PRs, 12 pushes in 11 years 7 months
Contributions summary:Jeremy focused on enhancing the ActiveResource library. They implemented features that allowed site URIs to accept URIs and strings. They also addressed response code handling and implemented support for 409 Conflict responses. Further contributions include refactoring and adding methods for collection and element paths, along with general improvements to the codebase.
restwebservice
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