Fumiya Sakai
モバイルエンジニア at GMOペパボ株式会社
Tokyo, Japan
Summary
👤
Senior🎓
Top SchoolFumiya Sakai is a Tokyo-based mobile engineer with 14 years of experience transitioning from a design-minded PHP/Ruby web developer to a specialist in iOS (Swift/Objective-C) and cross-platform mobile work. He has driven feature development, UI refactors, A/B testing and growth-hack initiatives for consumer apps across companies like GLOBIS, LIDDELL and Tokubai, and now contributes to GMO Pepabo’s mobile efforts. His background as a former web designer and server-side engineer gives him a rare UX-aware full-stack perspective, enabling him to ship polished interfaces while handling backend integration and operational concerns. He regularly shares UI samples and technical write-ups on Qiita and GitHub, and prefers sketching ideas by hand when designing flows and diagrams. Comfortable across PHP, Ruby, Swift and Android stacks, he thrives in small cross-functional teams delivering product-focused improvements.
14 years of coding experience
11 years of employment as a software developer
教育学部数学科（旧教育学部理学科数学専修）, Topology and Foundations, 教育学部数学科（旧教育学部理学科数学専修）, Topology and Foundations at 早稲田大学 WASEDA University
Github Skills (96)
interface-builder10
uipageviewcontroller10
uiview10
swiftui10
twitter10
containerview10
autolayout10
xib10
carthage10
swift10
uilabel10
xcode10
backport10
uitableview10
uicollectionview10
Programming languages (9)
Github contributions (5)
fumiyasac/meals_ios_ui_recipe_showcase
Oct 2019 - Jul 2022
iOSアプリ開発 - UI実装であると嬉しいレシピブックまかない編掲載サンプル
Contributions:96 commits, 7 PRs, 59 pushes in 2 years 9 months
swift5mvvmxibuiscrollviewios
fumiyasac/conference-app-2023
Aug 2023 - Sep 2023
Contributions:29 pushes, 9 branches in 27 days
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