Johnathan Weisner
Senior Software Engineer at Kalshi
New York, New York, United States
Summary
👤
Senior🎓
Top SchoolJohnathan Weisner is a Senior Software Engineer in New York with 12 years of experience building and optimizing web platforms across fintech and consumer products. He thrives on tackling ambiguous, high-impact problems—from database optimization to complex JavaScript features—and consistently gravitates toward the hardest parts of a project. His career spans roles at Kalshi, Narmi, Attentive, Tumblr, and Zola, delivering scalable features for payments, banking, and high-traffic consumer sites. A committed teacher and coach, he makes a point of passing along new insights to at least two colleagues whenever he learns something valuable. Early hands-on roles from coaching at Dev Bootcamp to leading at Sony give him both technical depth and customer-facing instincts.
12 years of coding experience
10 years of employment as a software developer
Computer Engineering, Computer Engineering at Rochester Institute of TechnologyComputer Software Engineering, Computer Software Engineering at Dev BootcampAssociate's Degree Fine and Studio Arts, Associate's Degree Fine and Studio Arts at Suffolk County Community College
English, Thai
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (35)
pane9
react8
testing7
titlebar7
policies7
iterm7
tumblr6
typescript6
accessibility6
colors6
component-library5
api5
brightness4
ui-components4
macbook-pro4
Programming languages (5)
Github contributions (5)
JohnathanWeisner/minesweeper-vuejs2
Jul 2016 - May 2017
Contributions:44 commits, 14 pushes, 1 branch in 10 months
JohnathanWeisner/JohnathanWeisner.github.io
Jan 2015 - Feb 2018
Contributions:38 pushes in 3 years 1 month
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