Software Development From A to Z – OOP, UML, Agile and more

My passion is helping people through online courses. So far, I've inspired over 50,000 students worldwide.

Hi there, my name is Károly Nyisztor. I'm a software engineer, online instructor, and book author. You can find my courses and books on all major platforms including Udemy, LinkedIn Learning, Lynda and Pluralsight.

I've worked with companies such as Apple, Siemens, SAP, Zen Studios, and many more.
I've designed and built several enterprise frameworks, and I hold twelve patents related to inventions in the field of mobile computing.

I've developed over a dozen iOS apps and games- Libra Balance, My Travel Assistant, Travel Mate, iSyslog, GiftShopper, Zombie Run, to name a few.
Most of these apps have been featured by Apple(New and Noteworthy, App of the Month, Best Travel Apps).

I’ve been working with various technologies and programming languages, including real-time x86 Assembly and C, C++, Java, Objective-C, Swift, and Python.

After 18 years, I left the corporate world to start my own business. Since 2016 I’m fully committed to teaching.

As an instructor, I aim to share my 20+ years of software development expertise. I currently am teaching iOS Programming, Object-Oriented Programming, Security, Swift Programming, Machine Learning, Object-Oriented Design, and UML.