Istvan Kreisz
Freelancer & Independent IOS & Web Developer at Self-employed
Budapest, Hungary
Summary
👤
Senior🎓
Top SchoolIstvan Kreisz is a full‑stack iOS and web developer with nine years of experience building consumer apps, games, and indie products as a freelancer and startup founder. He designs maintainable architectures and polished UIs, having shipped high‑impact projects from a SpriteKit game with millions of downloads to a real‑time multiplayer Next.js/TypeScript game currently at 500 DAU. Comfortable across frontend, backend, cloud (Google Cloud, Firebase) and mobile, he’s delivered features, CI/test automation, and data‑sync layers for fast‑moving teams. An entrepreneurial problem solver, he independently launched CopDeck (sneaker resale tooling with web scraping) and iterated product concepts while traveling internationally. Recently he’s been exploring LLMs and related tooling, blending curiosity about AI with hands‑on product execution.
9 years of coding experience
3 years of employment as a software developer
Bachelor’s Degree, Electrical and Electronics Engineering, 4.49 (scale of 1-5), Bachelor’s Degree, Electrical and Electronics Engineering, 4.49 (scale of 1-5) at Budapest University of Technology and EconomicsUniversity of Massachusetts Amherst
English, Hungarian
Stackoverflow
1reputation
797reached
0answers
1question
Github Skills (20)
objective-c10
ios10
xcode10
combine10
swift10
macos10
cocoapods10
realm9
carthage9
swift-package8
chat8
saas8
database7
calayer6
coregraphics6
Programming languages (3)
Github contributions (5)
istvan-kreisz/blog
Aug 2020 - Sep 2023
my personal blog (built with React & Next JS, hosted on Netlify)
Contributions:44 pushes, 1 branch in 3 years 1 month
next-jsreactbuilt-with-reactreact-nextreact-next-js
CombineCommunity/CombineRealm
Feb 2020 - Sep 2020
Combine extensions for Realm
Contributions:15 commits, 22 pushes, 21 tags in 7 months
combineextensionsdatabaserealmreactive
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