Nikolai Kasyanov
Staff Software Engineer at Careem
Berlin, Germany
Summary
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Rockstar🎓
Top SchoolNikolai Kasyanov is a Staff Software Engineer based in Berlin with 15 years of experience leading mobile and backend engineering teams and shipping production-grade iOS platforms at scale. He has progressed from hands-on iOS development and game-engine porting to technical leadership roles at FlixMobility and Careem, driving SDKs, build systems, and cross-platform integration. Nikolai contributes to notable open-source projects—improving test stability in ReactiveCocoa and porting the OpenMW engine to macOS—showing a blend of QA rigor and low-level build expertise. He’s comfortable bridging product, design and backend concerns, and often tackles platform-specific problems like .app bundling, SDL2 integration and path handling. Colleagues describe him as a pragmatic leader who still dives deep into debugging and test automation to ensure reliable asynchronous and cross-platform behavior.
15 years of coding experience
14 years of employment as a software developer
Engineer's degree, Information Technology, Engineer's degree, Information Technology at Московский Государственный Технический Университет им. Н.Э. Баумана (МГТУ) / Bauman Moscow State Technical University
English, Russian, German
Stackoverflow
927reputation
97kreached
28answers
3questions
Github Skills (16)
reactivecocoa10
swift10
c-language10
cmake10
build-system10
macos10
cprogramming-language10
sdl10
testing10
game-engine9
ogre9
objective-c8
java6
ios6
reactive-programming6
Programming languages (14)
Github contributions (5)
OpenMW/openmw
Mar 2011 - May 2021
OpenMW is an open-source open-world RPG game engine that supports playing Morrowind. Main repo and issue tracker can be found here: https://gitlab.com/OpenMW/openmw/
Role in this project:
Backend & Build Engineer
Backend & Build EngineerContributions:2 reviews, 277 commits, 64 PRs in 10 years 3 months
Contributions summary:Nikolai focused on improving the build process and porting the game engine to macOS. They implemented various platform-specific changes, particularly for the .app bundle. Key contributions included modifying the build system to properly include resources, plugins and frameworks, and integrating SDL2 for windowing and input on macOS. They also fixed bugs related to path handling and made adjustments for the game's configuration file.
gametrackerrpgrpg-gamec-plus-plus
ReactiveCocoa/ReactiveCocoa
Dec 2013 - Dec 2013
Cocoa framework and Obj-C dynamism bindings for ReactiveSwift.
Role in this project:QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:6 commits, 5 comments in 6 days
Contributions summary:Nikolai focused on writing and fixing test cases for the ReactiveCocoa framework. Their contributions include identifying and resolving issues that lead to crashes and unexpected behavior within the framework. The commits demonstrate their efforts to ensure the stability and reliability of the asynchronous signal processing logic through rigorous testing, including addressing specific issues related to the `takeUntil` operation. They also corrected a typo within a source file.
objective-cobj-creactivecocoareactiveswiftswift
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