John Szafraniec
Senior Full Stack Software Engineer at Courtesy Electric
Knoxville, Tennessee, United States
Summary
👤
Senior🎓
Top SchoolJohn Szafraniec is a Senior Full Stack Software Engineer based in Knoxville, Tennessee, with over two decades of hands-on experience delivering high-performance web and mobile solutions for startups and established media companies. Currently at Courtesy Electric, he blends front-end craftsmanship with back-end systems design, having previously built large-scale lead-gen platforms that drove half of a company's revenue and a custom A/B testing system for real-time mobile optimization. He has a strong history of improving performance and reliability—migrating infrastructures, deploying custom Linux servers, and managing CDN-driven production pushes for high-traffic sites like HGTV and Food Network. Comfortable across the stack (HTML/CSS/JS, C#, ASP.NET, Linux), he also mentors teams on front-end standards and pragmatic architecture. Notably, he pairs product-focused thinking with operational ownership, having overseen server, DNS and deployment work as part of delivering customer-facing portals used daily by thousands of agents.
8 years of coding experience
9 years of employment as a software developer
ITT Tech
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (81)
android10
react10
javascript9
microfrontend9
react-native9
ios9
expo9
frontend9
weex9
typescript9
mbaas8
framework78
uikit8
python8
hosting8
Programming languages (4)
Github contributions (5)
JavaScriptJohn/expo-keycloak
Jan 2022 - Sep 2022
TypeScript + Expo + Keycloak login
Contributions:14 releases, 11 commits, 2 PRs in 8 months
react-nativetypescript-expotypescriptkeycloak
JavaScriptJohn/react-native-toast-message
Feb 2022 - Feb 2022
Animated toast message component for React Native
Contributions:1 release, 2 pushes, 1 tag in 1 day
reactanimatedreact-nativetoast-messagemessage
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