Hakan Ensari
Founder at Paper Cavalier
Amsterdam, North Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolHakan Ensari is a founder and seasoned software leader with 16 years of experience building product-led companies and developer tools from Amsterdam. He founded Paper Cavalier in 2004, served as its CTO for nearly a decade, and today runs Line of Flight while advising as a Non-Executive Director. A pragmatic full-stack engineer, Hakan is an active open-source contributor to high-profile Ruby and tooling projects—improving modularity and UX in ohmyzsh and hardening caching and HTTP adapters in rack-attack and Faraday. He combines deep backend expertise (Mongoid slugging, caching backends, adapter patterns) with a knack for developer ergonomics and test-driven refinement. His background includes advanced academic work at NYU and a BS from Boğaziçi University, reflecting a blend of rigorous research thinking and hands-on product execution.
16 years of coding experience
13 years of employment as a software developer
PhD candidate, PhD candidate at New York UniversityRobert CollegeBachelor's degree, Bachelor's degree at Boğaziçi University
Russian, Arabic, Spanish, French, Turkish, German, English
Stackoverflow
1,969reputation
111kreached
16answers
23questions
Github Skills (35)
git10
caching10
ruby-rails10
middleware10
redis10
testing10
package-development10
cucumber10
rails10
httpc10
ruby10
http-client10
bundler10
mongoid10
httplib10
Programming languages (11)
Github contributions (5)
mongoid/mongoid-slug
Jun 2010 - Jul 2012
Generates a URL slug/permalink based on fields in a Mongoid-based model.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:244 commits in 2 years 1 month
Contributions summary:Hakan primarily worked on implementing and refactoring core functionality related to creating and managing URL slugs within a Mongoid-based model. They refactored the structure to work as a gem, implemented features for embedded documents, and introduced support for customized slug field names. Moreover, the user focused on the slug history mechanism and provided comprehensive testing coverage.
model-basedmongoidslugifyslugurl-slug
ohmyzsh/ohmyzsh
Dec 2010 - Aug 2011
🙃 A delightful community-driven (with 2,400+ contributors) framework for managing your zsh configuration. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python, etc), 140+ themes to spice up your morning, and an auto-update tool that makes it easy to keep up with the latest updates from the community.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:14 commits in 8 months
Contributions summary:Hakan primarily contributed to the `ohmyzsh` configuration framework by enhancing existing plugins and improving the user experience. They fixed typos, added aliases to streamline common commands like `git checkout` and `bundle list`, and refactored the bundler plugin. The user also updated and reorganized the plugins to improve the framework's modularity and functionality.
oh-my-zsh-pluginpythonrails-pluginszsh-configurationauto-update
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