Kazumasa Shimomura
IOS Engineer at 株式会社 サイバーエージェント
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolKazumasa Shimomura is an iOS engineer based in Tokyo with 10 years of experience and a track record of shipping over 20 apps since he began writing Swift in 2017. Currently at CyberAgent, he has prior startup and contract experience building product-grade iOS software and contributing as a QA/test automation engineer to notable open-source Swift projects like BitcoinKit. Comfortable across app development and testing, he combines practical product delivery with a keen focus on reliability and unit-level correctness. Seeking side projects that help him improve English and engage with international teams, he brings a disciplined engineering mindset grounded in a Software Informatics degree from Iwate Prefectural University.
9 years of coding experience
1 year of employment as a software developer
ソフトウェア情報学, ソフトウェア情報学 at 岩手県立大学
Github Skills (8)
testing10
swift10
bitcoin10
bitcoin-abc10
bitcoins10
xctest10
test-automation10
ios7
Programming languages (8)
Github contributions (5)
yenom/BitcoinKit
Aug 2018 - Aug 2018
Bitcoin protocol toolkit for Swift
Role in this project:
QA Engineer / Test Automation Engineer
QA Engineer / Test Automation EngineerContributions:20 commits, 2 comments in 12 days
Contributions summary:Kazumasa primarily focused on testing the BitcoinCashKit library, with a focus on writing unit tests for various components. They created tests for key functionalities like HD private keys, scripts, bloom filters, and opcodes. The contributions included adding new tests, fixing existing ones, and ensuring the library's reliability.
swiftwalletbitcoinbchbitcoincash
s2mr/L10nLint
Feb 2023 - Feb 2023
Lint tool for Localizable.strings
Contributions:14 releases, 3 reviews, 42 commits in 10 days
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