- Tech lead for 4 engineers and architected the Global Checkout Flow System which serves 30 countries, consolidating 36 entry points with 180,000 monthly views.- Mentored 6 engineers (5 junior, 1 senior) across 3 teams to restructure and resulted in 70% reduction in bug-inflow.- Designed architecture to easily expand to other countries with minimal engineering effort.- Achieved a 15% improvement in user retention rate by reducing 67% loading time of checkout flow by various types of performance optimization skills, like CDN refinement, lazy loading, dns-prefetch.

Led 3 engineers as Architecture Lead on enterprise course platform “Security Training System”:- Expedited delivery timelines by 30% by accounting for all design edge-cases.- Designed a flexible Route Guard to integrate a large platform with over 20 subsystems by React HOC, and GOF design pattern with JS Promise API.- Proactively introduced RTK Query Mechanism from Redux Toolkit significantly enhancing developer experience and reducing 30% API fetching implementation-time.- Reduced deployment time by 75% by building continuous integration and deployment infrastructure. - Received “Quarterly Star” recognition for leadership and technical contributions. ------------------------------------------------------------------------------------------------------Feature lead of 2 engineers for building the “Phishing Simulation System”:- Significantly reduced ⅔ of code-writing time and by building unit tests best practice.- Automated 90% manual engineering checking time by adopting React translation tool.

Engineering lead for Group Travel Search page and Details page:- Rebuilt all core products search and detail page project environments as Technical Principal.- Delivered a workshop to share frontend domain knowledge to the company to all members on Lighthouse Performance Score and Redux.-------------------------------------------------------------------------------------------------------In charge of Search engine across 7 projects including deployment & development:- Proactively enhancing the workflow by documenting all deployment process, and tutoring the skill to other members within 1hr.

Side ProjectCollect FriendShip https://www.youtube.com/watch?v=kvCDc_sohc4Tech Stack: jQuery, PHP, Vue, MySQL, Ajax, WebsocketDesc : A RPG like chat room.BPuni https://tibamef2e.com/demo-personal/T1900132/?fbclid=IwAR2TxIRTnhyVu_KyR0Rf2QKSh2BwjYRbq9AWzs8eUPmSRdcV5IG2qPDR2BYTech Stack : jQuery, CSS, HTMLDesc : A Static FanPage.

In charge of Machine Toolholders for Swiss Type Turning CentersCommunicate with Process Technicians