Jonathan Swartz
Staff Engineer at Instacart
Berkeley, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJonathan Swartz is a seasoned Staff Engineer in Berkeley with 27 years of experience building high-performance web platforms, developer tooling, and operational frameworks. He’s spent over a decade leading backend and productivity efforts at Amazon/Goodreads and currently focuses on Ruby/Rails platform reliability, Sorbet type adoption, and build/test speed at Instacart. Creator of Mason and CHI, he has a long history of open-source tooling and pragmatic architecture that improved production performance and developer workflows at scale. His work spans rapid high-level development in expressive languages and surgical low-level optimizations when performance demands it, with proven wins in caching, monitoring, and data pipeline cost reduction. He pairs hands-on coding with mentoring and process leadership, and quietly excels at turning sprawling data and service landscapes into coherent, testable developer environments.
27 years of coding experience
25 years of employment as a software developer
MS, Computer Science, MS, Computer Science at Cornell UniversityBS, Logic and Computation, BS, Logic and Computation at Carnegie Mellon University
Stackoverflow
1,963reputation
107kreached
12answers
19questions
Github Skills (67)
cfml10
mvc10
perl10
ruby10
activerecord10
mason10
html10
httpd10
rails10
high-performance9
ruby-on-rails9
poet9
logging9
driver9
parallel-processing8
Programming languages (6)
Github contributions (5)
jonswar/perl-poet
Jun 2010 - Jan 2015
Contributions:296 commits, 1 push in 4 years 7 months
poetperldistribution
jonswar/perl-chi-driver-memcached
Dec 2008 - Sep 2014
Perl CHI-Driver-Memcached distribution
Contributions:73 commits in 5 years 9 months
drivermemcachedperl
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