Zen Isis
South Korea
Summary
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Rockstar하성민 Ha is a seasoned iOS-focused software engineer and manager with 13 years of experience building and leading client SDK and mobile teams at major Korean tech firms including Sendbird, LINE, Coupang, NHN, and NCSOFT. He combines hands-on expertise in Objective-C and Swift with people leadership, having managed cross-platform SDK efforts (iOS, Android, React, JS, RN) and driven delivery for high-scale apps like LINE and Coupang. A pragmatic engineer, he has contributed to open-source iOS tooling such as an iOS port of Google's libphonenumber, improving core data-type consistency for better platform compatibility. Based in Gyeonggi, South Korea, he blends backend understanding (delivery tracking servers) with polished mobile UX execution, and his GitHub motto “Just for FUN!” reflects a continuing passion for tinkering and practical improvements.
13 years of coding experience
Github Skills (3)
objective-c10
ios9
libphonenumber8
Programming languages (3)
Github contributions (5)
iziz/libPhoneNumber-iOS
Feb 2014 - Jun 2019
iOS port of Google's libphonenumber with Objective-C core, Swift facade, SwiftUI input, and CocoaPods/SPM support
Role in this project:
Back-end Developer
Back-end DeveloperContributions:299 commits, 60 PRs, 228 pushes in 5 years 4 months
Contributions summary:Zen primarily focused on refactoring and improving the underlying implementation of the iOS port of the libphonenumber library. Their contributions involved changing data types from `int`, `long`, and `unsigned long` to `NSNumber` across several files, demonstrating a focus on data type consistency and potentially improving platform compatibility. These changes touched upon core functionality within the `NBPhoneNumberUtil.m` file.
cocoapodsioslibphonenumberobjective-cswift
awojnowski/libPhoneNumber-iOS
Dec 2012 - Feb 2013
Contributions:77 commits in 2 months
ios-libraryphoneinternational-phonelibphonenumberstoring
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