Jonathan Klein
Verified Expert in Engineering
Software Developer
Boston, MA, United States
Toptal member since May 22, 2015
Jonathan is a Lead Engineer at Attend.com, where he focuses on solving both front-end and back-end issues. He started the Boston Web Performance Meetup Group, and he contributes to a few open source projects, including the HTTPArchive, WebPagetest, and CSSLint. He is also the co-creator of Hound and wpt-script, two open source projects built at Etsy.
Portfolio
Experience
- CSS - 7 years
- HTML - 7 years
- JavaScript - 5 years
- PHP - 4 years
- MySQL - 3 years
- Chef - 2 years
- jQuery - 2 years
- Laravel - 1 year
Availability
Preferred Environment
Sublime Text 3, Vagrant, GitHub
The most amazing...
...tool I've open sourced is Hound, a code search tool built at Etsy.
Work Experience
Lead Engineer
Attend.com
- Focused on front-end architecture and building a strong engineering team.
Senior Software Engineer
Etsy
- Wrote public-facing site performance reports on Etsy’s “Code as Craft” blog, communicating quarterly load time metrics for etsy.com.
- Deployed and managed a custom WebPagetest instance on Amazon EC2 cloud servers, which was used to monitor site performance.
- Open-sourced wpt-script, a WebPagetest client that makes it easy to automatically run tests and gather data from WebPagetest.
- Open-sourced Hound, a code search tool which became Etsy’s third most popular open source project within one month of launch.
- Conducted performance audits across Etsy.com and built tooling to make regressions easier to identify and fix.
Senior Software Engineer
Wayfair
- Received 2009 “Founder’s Award for Innovation,” given to one employee each year hand-picked by the company founders out of 500+ candidates for outstanding contributions to the business.
- Promoted three times in less than four years, which was dramatically faster than peers.
- Led a team of five internal engineers and four remote contractors to rewrite Wayfair.com's code base using PHP, incorporating site design and brand overhaul.
- Trained and led a four-person CSS team during a redesign of all 200+ CSN Stores websites in 2009, establishing company-wide coding conventions and best practices.
- Built new features for the customer-facing websites as well as back-end tools to make it easier for our marketing team to make data changes.
Experience
Hound
https://github.com/etsy/HoundEducation
Bachelor of Science Degree in Astronomy and Physics
Haverford College - Haverford, PA
Skills
Libraries/APIs
Node.js, jQuery, React
Tools
Subversion (SVN), Sublime Text 3, Packer, Vagrant, Chef, Git, Apache, GitHub
Languages
PHP, HTML, CSS, JavaScript, SQL, Active Server Pages (ASP), Python
Frameworks
Ruby on Rails (RoR), Laravel, AngularJS
Storage
Memcached, PostgreSQL, MySQL
Paradigms
Agile Software Development
Platforms
Amazon EC2
Other
Front-end Development, Software Development
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