Karoly Nyisztor
Instructional Author at LEAKKA
Dunakeszi, Hungary
Summary
👤
Senior🎓
Top SchoolKároly Nyisztor is a software engineer-turned-instructional author and founder with over a decade of hands-on experience building mobile and enterprise software for companies like SAP and Apple-era projects, now focused on teaching software development to a global audience. Since 2016 he founded Leakka and has created courses and materials on Udemy, Pluralsight, and LinkedIn Learning that have reached hundreds of thousands of learners in topics from iOS and Swift to machine learning and software architecture. He combines deep low-level knowledge—from Assembly and C++ to modern Swift and Python—with practical product experience, holding 12 patents in mobile computing and shipping iOS apps featured by Apple. Based in Hungary but active internationally, he blends entrepreneurial drive with a knack for turning complex engineering concepts into accessible, hands-on learning experiences. Less obvious: his background spans both startup product shipping and large-enterprise architecture, which helps him teach both practical coding skills and the design thinking required to scale real-world systems.
12 years of coding experience
21 years of employment as a software developer
Bachelor’s Degree Computer Software Engineering, Bachelor’s Degree Computer Software Engineering at Kolozsvári Műszaki Informatikai Főiskola
English, German, Hungarian, French
Stackoverflow
3,565reputation
1.3mreached
40answers
0questions
uialertcontroller
top-5%
ios
top-5%
swift
top-5%
ipad
top-5%
Github Skills (24)
javascript10
docker10
python10
rails10
asp-net-mvc10
java10
ruby10
pluralsight10
android10
angularjs10
blockchain10
swift10
nodejs10
ipad9
uialertcontroller9
Programming languages (3)
Github contributions (5)
nyisztor/coreml2-demos
Oct 2018 - Apr 2019
Contributions:18 commits, 15 pushes, 1 branch in 6 months
nyisztor/swift-algorithms
Jan 2017 - Jul 2022
Source code for "Introduction to Algorithms in Swift" course
Contributions:26 commits, 2 PRs, 43 pushes in 5 years 6 months
introduction-to-algorithmsswift
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