John Leszczynski
Staff Software Engineer at Google
Seattle, Washington, United States
Summary
👤
Senior🎓
Top SchoolJohn Leszczynski is a Staff Software Engineer in Seattle with 11 years of experience turning complex data into reliable, production-grade mapping systems at Google. His work has progressed from improving data quality on Google Maps to leading efforts to map the world’s buildings, blending strong engineering with spatial data expertise. Trained as a composer with a Master of Music, he brings a creative, pattern-oriented approach to software design and problem solving. Prior roles include full‑stack mobile development and a background teaching music theory, demonstrating an unusual mix of product engineering and pedagogy. He’s known for curiosity-driven side interests—birds and composition inform a meticulous attention to detail that shows up in data quality and tooling. Colleagues describe him as a pragmatic engineer who marries analytical rigor with creative thinking to deliver scalable geospatial systems.
11 years of coding experience
8 years of employment as a software developer
BM composition and saxophone performance Music Composition, BM composition and saxophone performance Music Composition at Indiana University BloomingtonBishop DwengerMaster of Music Composition, Master of Music Composition at University of Maryland
English
Github Skills (7)
decision-making9
context-free-grammar9
graph8
grammar8
slate4
spectrogram1
plot1
Programming languages (2)
Github contributions (5)
ave-llan/counterpoint
Mar 2015 - Jan 2017
Contributions:106 commits, 90 pushes, 2 branches in 1 year 10 months
ave-llan/linux-server-setup
Jul 2015 - Jul 2015
Contributions:48 commits, 46 pushes, 1 branch in 7 days
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