Erik Berlin
San Francisco, California, United States
Summary
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RockstarErik Berlin is a seasoned software engineering manager and founder with 16 years of experience building and shipping consumer and infrastructure products from startups to large platforms. He led teams at Twitter (including the Subscriptions and in-app purchase stacks that powered X Premium) and founded Breaker, a YC-backed social podcast app acquired by Twitter. Erik combines hands-on backend expertise in Ruby/Rails and HTTP clients with strong QA and test-coverage discipline, evidenced by extensive open-source contributions to projects like Faraday, Bundler, SimpleCov and many well-known Ruby libraries. He has a track record of improving maintainability and testability across codebases, refactoring legacy integrations for modern APIs and strengthening CI practices. Based in San Francisco, he moves easily between technical leadership and shipping code, having acted as CEO, CTO, and principal engineer in prior roles. A maker-and-breaker at heart, he’s as comfortable fixing subtle test flakiness as architecting payment and subscription systems that scale.
17 years of coding experience
Stackoverflow
1,795reputation
268kreached
14answers
5questions
Github Skills (101)
dependency-management10
json-parser10
apim10
faraday10
package-management10
clientside10
testing10
command-line-interface10
http10
rspec10
authentication10
test-framework10
coverage10
httpc10
refactor10
Programming languages (16)
Github contributions (5)
codeforamerica/adopt-a-hydrant
Feb 2011 - Oct 2016
A web application that allows citizens to "adopt" civic infrastructure, such as fire hydrants that need to be shoveled out after it snows.
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:1683 commits, 3 PRs, 289 pushes in 5 years 8 months
Contributions summary:Erik contributed to the development of the web application by implementing the welcome page, including a Google Map integration. They also made changes to the application layout, routes, and stylesheets, indicating involvement in both the front-end and back-end aspects of the project. Further contributions included a marker update, addition of user and hydrant classes suggesting database modeling, and refactoring of the welcome page layout. These changes point to full-stack development capabilities.
citizensdjangoinfrastructureweb-applicationcivic
sferik/twitter-ruby
Mar 2010 - Feb 2020
A Ruby interface to the Twitter API.
Role in this project:Back-end Developer
Back-end DeveloperContributions:1906 commits, 120 PRs, 337 pushes in 10 years
Contributions summary:Erik's primary focus was on improving the error handling and exception management within the library. They addressed issues by modifying exception classes, adjusting how errors are wrapped and handled within the codebase, and updating the test suite to verify the new error handling. The contributions showcase expertise in designing and maintaining a robust and reliable API wrapper by addressing specific errors.
rubytwitter-api
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