Hsiang-lin Tsai
IOS Developer at Costa Coffee
London, England, United Kingdom
Summary
👤
Senior🎓
Top SchoolHsiang-lin Tsai is a seasoned iOS developer based in London with roughly a decade of professional experience building high-quality mobile apps and shipping products at scale. He champions Test-Driven Development and functional programming patterns, driving cleaner, more maintainable code and significantly faster delivery cycles. At Costa Coffee he led architecture and feature design that grew daily active users ~38% and scaled the app to 3 million MAU while helping the app reach #6 in Food & Drink on the App Store. His background spans freelance projects, startups and a co-founded sustainable e-commerce venture, showing both product sensibility and hands-on engineering. Known for applying RxSwift, MVVM, CI/CD automation and SOLID principles, he blends pragmatic engineering with measurable business impact.
10 years of coding experience
6 years of employment as a software developer
Master's degree Computer Science, Master's degree Computer Science at Tunghai University
Stackoverflow
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Github Skills (54)
pie-chart10
swiftui10
tvos9
swift8
charts8
mpandroidchart8
ios8
development-tools7
android7
metal7
lua7
nvidia6
cocos2d-x6
game-development6
segmentation6
Programming languages (8)
Github contributions (5)
zip520123/zip520123.github.io
Mar 2018 - Feb 2021
Contributions:4 PRs, 32 pushes, 3 branches in 2 years 11 months
zip520123/leetcodePython
May 2022 - Mar 2025
Contributions:525 pushes, 1 branch in 2 years 10 months
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