John Kisor
Principal Software Engineer at 8th Light
Leesburg, Virginia, United States
Summary
👤
Senior🎓
Top SchoolJohn Kisor is a Principal Software Engineer with over a decade of professional experience building resilient, well-tested web platforms and developer-friendly tooling. He has led core engineering efforts at ID.me and Cofense—improving verification systems, automating complex data workflows, and optimizing orchestration for high-throughput email campaigns—while maintaining a strong TDD culture. Comfortable across Ruby on Rails, JavaScript front-ends, PostgreSQL, and AWS deployments, he also brings systems-level experience from Visa and game-engine work in C#/Unity, giving him a rare blend of low-level and product-focused engineering. Known for reducing operational risk through test coverage, performance tuning, and pragmatic automation, John mentors teams and drives measurable improvements in uptime and developer velocity. Based in Leesburg, VA, he often surfaces subtle improvements (like QR-based phishing alternatives and automated pricing/invoicing integrations) that cut cost and expand product capability.
13 years of coding experience
15 years of employment as a software developer
Bachelor of Science (B.S.) Game Development, Bachelor of Science (B.S.) Game Development at Full Sail University
Github Skills (22)
edi10
inventory-management-system8
rails7
sinatra6
open-source6
mmo6
mongodb5
raylib5
javascript5
pathofexile4
redis4
linux4
poe4
player3
csharp3
Programming languages (6)
Github contributions (5)
jkisor/website
Aug 2020 - Mar 2025
Contributions:21 pushes, 1 branch in 4 years 7 months
jkisor/treestats.net
Oct 2021 - Jan 2024
Player tracking for Asheron's Call
Contributions:11 pushes, 5 branches in 2 years 3 months
player-trackingtrackingplayer
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