Dmitriy Semyaniv
Senior IOS Developer at Self-employed
Cluj-Napoca, Romania
Summary
👤
Senior🎓
Top SchoolDmitriy Semyaniv is a Senior iOS Developer and Software Architect with over a decade of commercial experience designing and shipping 20+ App Store applications, including large-scale projects with 500K+ downloads. He specializes in Swift and Objective-C, advanced architectures (MVC, MVVM, VIPER, Clean, Coordinators), StoreKit 2 subscriptions, and reactive patterns like Combine and RxSwift, and has a track record of reducing app load times by up to 40% through focused performance and multithreading optimizations. Dmitriy has led end-to-end mobile projects—from system design and technology selection to release management—and built complex real-time and multimedia integrations (WebSockets, video streaming, ARKit, CoreImage/AVFoundation) for IoT, social, and media apps. He routinely collaborates with firmware, backend, and design teams, mentors engineers, and enforces maintainable code practices across CI/CD workflows. Based in Cluj-Napoca with a Master’s in Programming Engineering, he combines deep low-level iOS expertise with pragmatic architecture decisions that balance scalability, testability, and user experience.
8 years of coding experience
9 years of employment as a software developer
Kharkiv National University of Radio Electronics
Английский, Украинский, Русский
Github Skills (7)
xcode10
objective-c10
carthage10
swift10
macos10
ios10
cocoapods10
Github contributions (5)
semyaniv/simple_clock
Jun 2019 - Jun 2019
Contributions:3 pushes, 1 branch in 1 day
semyaniv/iOSFilters_part1
Aug 2019 - Aug 2019
Contributions:2 pushes, 1 branch in 1 day
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