Harry Duan
Principal APP Development Engineer at Bybit Fintech Limited
Tokyo, Japan
Summary
🤩
Rockstar🎓
Top SchoolHarry Duan is a Principal App Development Engineer based in Tokyo with 11 years building high-performance mobile and Web3 products at top fintech and tech firms including Bybit, BingX, Binance, and ByteDance. He blends deep mobile-infrastructure expertise (iOS, Swift, NetworkKit, APM and A/B systems) with hands-on wallet and crypto features, cross-platform SDK work (KMM), and real-time data pipeline engineering. Harry has led projects from app startup optimization and CI/CD automation to regional compliance adaptations, demonstrating both product-level ownership and platform thinking. An active open-source contributor and problem-solver, he publishes solutions like LeetCode-Swift and writes a technical blog and newsletter that share hard-core original engineering insights. With an MBA and a communications engineering background, he pairs technical depth with business acumen to deliver compliant, performant mobile experiences across global markets.
11 years of coding experience
8 years of employment as a software developer
Master of Business Administration - MBA, MBA, 15.33/20, Master of Business Administration - MBA, MBA, 15.33/20 at INSEEC MScBachelor's degree, Communications Engineering, 84.3/100, Bachelor's degree, Communications Engineering, 84.3/100 at 西南交通大学 (SWJTU)
Github Skills (7)
data-structures10
algorithms10
swift10
data-structure10
lintcode9
algorithm9
data-manipulation8
Programming languages (15)
Github contributions (5)
soapyigu/LeetCode-Swift
Aug 2017 - Aug 2017
Solutions to LeetCode by Swift
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 3 PRs, 2 comments in 1 day
Contributions summary:Harry contributed solutions to LeetCode problems using Swift. They implemented solutions for problems involving binary trees and array manipulation. The user also refactored code, changing class names and fixing minor coding style issues. This user demonstrated proficiency in Swift and understanding of data structures and algorithms.
data-structuresswiftleetcode-solutionsleetcode
idevqa/interval
Feb 2020 - Jul 2020
Contributions:32 commits, 111 pushes, 2 branches in 4 months
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