Zhongqi (Colin) Liang Email and Phone Number

Contributed to the enhancement of the YouTube app on Android TV devices by developing innovative features and actively participating in the successful app release process.• Led collaborative efforts with cross-functional engineers to pioneer the account propagation feature, allowing multiple users to access personalized YouTube content on shared TV devices. This innovation significantly increased the Sign In Rate and overall Watch time, enhancing the user experience.• Designed and implemented feature enhancements and tools to overhaul the release infrastructure, resulting in a remarkable optimization of the release velocity.• Oversaw the release of new Cobalt versions on Android TV devices, closely monitoring the process and collaborating with engineers from subteams to promptly address and fix any encountered bugs.• Java, C++, Python, Android

Revamped service and tool offerings for Google Cloud teams, facilitating the seamless release of billion-user applications like Gmail and Calendar on a global scale with unparalleled efficiency.• Led end-to-end development, overseeing design, implementation, and testing phases.• Python, Go, SQL, Borg (Google's large scale cluster management)

Designed and developed software to offer an advanced algorithm that efficiently assigns makeup and skincare products combinations to subscribers.• Tech lead of the team, leading a group of 3 engineers.• Successfully developed and implemented an automation service, significantly reducing manual work involved in running the assignment workflow.• Leveraged Machine Learning team's models to enhance subscribers' personalization experience.• Conducted optimization of backend jobs, resulting in a notable reduction in the runtime of the assignment workflow.• Implemented cost-saving measures that led to a reduction in cloud services expenditure.• Java, Javascript, Databricks, Airflow, AWS, Gurobi

• Led the comprehensive rearchitecting of the codebase, transitioning it to a micro-service infrastructure. It facilitated seamless integration of 3rd party services into the ClearSlide platform.• Implemented enhancements to seamlessly integrate the product with Salesforce, resulting in increased deal generation and improved sales performance.• As a key member of an agile team, consistently delivered features and infrastructure improvements. Promoted concise and maintainable code through TDD, refactoring, and peer code reviews.• Java, Spring boot, Mysql, Docker, AngularJS, Bootstrap, AWS

Contributed to Twitter's notification infrastructure, collaborating with machine learning engineers and designers to optimize email content for enhanced user engagement.• Leveraged machine learning models to redesign "people you may know" / "people similar to follow" emails, resulting in a substantial increase in email click rates and improved recommendation quality.• Collaborated with designers to enhance the landing experience for new and returning users.• Successfully implemented the Day Time Optimization feature, empowering the service to deliver notifications to users worldwide at their local time. Conducted AB testing to identify the peak click rate hour, further refining the notification strategy.• Scala, Hadoop, Javascript

Contributed to the web rendering team, establishing essential infrastructure for Amazon's internal teams to develop their web applications efficiently.• Spearheaded the development of the next-generation web rendering platform that serves as the backbone for numerous critical sections on Amazon.com, such as the detail page, customer reviews, orders, and navigation bar.• Designed and implemented Platform as a Service (PaaS) products, widely adopted by internal teams including Amazon.com, Kindle, and Amazon Prime, enhancing their operational efficiency and capabilities.• Java, Hadoop, SpringMVC, ExtJS, Hibernate, AWS

Served as a tech lead, leading an 8-member team. Spearheaded the development of the bank's robust notification system, facilitating the delivery of 50 million messages per month. Additionally, actively contributed to the creation of the bank's Receipt Validation System and Account Charging System.• C++, C#, SQL, Linux

Contributed to the development of an efficient SMS gateway capable of processing over 12,000 messages per second on a single IBM server. Successfully met the stringent requirements set by China Mobile, China Unicom, and China Telecom.• C++, SQL, Linux