• Led a team of 10 people to design and implement a new Android application for McDonald's (China) from initial design through completion in Java, Kotlin, C++, and TypeScript (React Native). Daily active users increased by 1900%, from ~5,000 to more than 100,000.

• Developed websites and web applications for McDonald's (China) using React with JavaScript and TypeScript.

• Reduced Android application’s crash rate from 2.6% to 0.5% by collaborating with quality engineers, user research, product management, design, and support teams to ensure quality in all phases of app development.

• Worked closely with core technology teams and other platform teams to balance cross-platform consistency with Android optimization.

• Mentored 2 early-career software engineers and 3 interns.

• Developed Security Manager application for MIUI ROM, which is a modified Android ROM.

• Launched the user payment protection function in India, protecting the payment security of 40 million Indian Users.

• Developed native Android applications and frameworks using Java ,C++ and JavaScript (React Native).

• Defined and implemented robust app architectures and complex user interfaces.

• Optimized data structure of search items, saving 40% of network traffic.

• Adopted principles of continuous integration of software and followed currently established industry standards, increasing release rate, team transparency and accountability.