Available to hire
Hi, I’m Yan G. Lee, a software engineer with a 12-year journey spanning Taipei to Prague. I’ve built and shipped mobile apps across multiple markets, focusing on iOS platforms and scalable architectures. I’ve discovered that technology transcends cultural boundaries.
As a developer who embraces the vibrant Central European ecosystem, I’ve learned that true innovation emerges from understanding diverse perspectives and transforming challenges into opportunities. I thrive in cross-functional teams and enjoy leading architecture initiatives that improve UI, performance, and maintainability.
Experience Level
Language
Chinese
Fluent
English
Fluent
Czech
Beginner
Work Experience
Senior iOS Developer at SAP Concur
December 31, 2024 - September 9, 2025Led iOS platform architecture and migration efforts from Objective-C/UIKit to SwiftUI across global teams. Delivered UI and functional modules for SAP’s AI platform, achieving a 99.7% crash-free rate and reducing codebase size by ~90% during migration. Implemented cross-continental engineering initiatives and contributed to core UI/UX improvements and performance optimizations.
Senior iOS Developer at SAP Concur
January 1, 2024 - September 9, 2025Swift, SwiftUI, Objective-C, UIKit, SAP Fiori, Combine; Pioneered architecture for Joule, SAP's AI platform, focusing on both UI and functional modules. Led cross-continental engineering initiatives, demonstrating how collaborative technology transcends geographical boundaries. Achieved 99.7% crash-free rate. Reduced 90% of the codebase size in the camera module by migrating from Objective-C/UIKit to SwiftUI.
Senior iOS Developer at STRV
December 31, 2021 - September 9, 2025Spearheaded iOS development using Swift, UIKit, AVFoundation, CoreML, and Firebase. Built and shipped complete modules with attention to UI and architecture, supporting cross‑functional teams and delivering robust mobile experiences.
Senior iOS Developer at SAP Concur
January 1, 2021 - September 9, 2025Swift, UIKit, AVFoundation, CoreML, SwiftUI, SiriKit, Firebase, RxSwift, Combine; Developed a video editing application for extracting files from compact cameras. Built an application for a Bluetooth Low Energy (BLE) IoT device with CTC Vega. Delivered public talks on online privacy and iOS architecture. Created a social app with real-time features.
Founder at HiveOS
December 31, 2019 - September 9, 2025Provided technical consulting and troubleshooting for blockchain hardware projects; established a social app with real‑time features and IoT/BLE integration; led end-to-end product development and technical strategy.
Founder at Zion Blockchain Ltd.
January 1, 2019 - September 9, 2025Founded Zion Blockchain Ltd. focusing on blockchain consulting and product development.
Senior iOS Developer at Viscovery
December 31, 2018 - September 9, 2025Delivered iOS solutions leveraging Swift, RxSwift, and Combine; contributed to architecture and feature development for scalable mobile apps on Taipei-based teams.
Senior iOS Developer at HiveOS
January 1, 2018 - September 9, 2025Linux Bash, Ethereum, Web3, React; Provided technical consulting and troubleshooting for blockchain hardware.
Senior iOS Developer at Viscovery
January 1, 2018 - September 9, 2025Swift, AVFoundation, AVPlayer, MLKit, UIKit, RxSwift; Developed an open-source library for VAST 4.0 digital ads format, seamlessly integrating with AVPlayer.
iOS Developer at EZTABLE
December 31, 2016 - September 9, 2025Developed end-to-end iOS applications with Objective-C/Swift, UIKit, and AVFoundation; contributed to mobile app architecture and integration with backend services.
iOS Developer at EZ TABLE
January 1, 2016 - September 9, 2025Objective-C, UIKit, OCMock, ReactiveCocoa; Engineered a comprehensive restaurant POS system. Implemented sophisticated order management and reservation tracking features.
Junior iOS Developer at Mobile 01
December 31, 2013 - September 9, 2025Gained foundational experience in mobile application development, building knowledge in iOS ecosystems and app lifecycle.
Junior iOS Developer at Mobile 01
January 1, 2013 - September 9, 2025Developed a mobile forum application. Gained foundational experience in mobile application development.
Education
Bachelor of Computer Science (Incomplete) at Feng Chia University
January 1, 2005 - January 1, 2010Bachelor of Computer Science (Incomplete) at Feng-Chia University
January 1, 2005 - January 1, 2010Qualifications
Industry Experience
Software & Internet, Media & Entertainment, Professional Services, Computers & Electronics
Experience Level
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