About

Junjun Li is a highly experienced Principal Engineer with over 16 years of relevant experience in the software engineering industry. Currently, he is working at Uber as a Staff Engineer and Engineering Manager, where he is responsible for leading a team of engineers to develop innovative solutions for the company's complex engineering challenges. Prior to joining Uber, Junjun worked at Twitter as a Staff Engineer, where he was the Tech Lead of Ads Targeting (User Modeling) team. In this role, he led various user modeling projects, including handle targeting, lookalike targeting, and more. He has also worked at WalmartLabs as a Principal Software Engineer and Team Lead, where he led the Targeting team and was responsible for architecting, designing, and implementing an event-driven product recommendation pipeline and system that impacted 40 million Walmart.com customers and drove significant revenue growth for the company. Junjun is highly skilled in a variety of technologies and has extensive experience in Information Retrieval, Big Data, Redis, ML, Hadoop, Kafka, and Apache Hive. He is a Senior Software Engineer with a proven track record of developing user-item recommendation algorithms and systems that leverage new techniques in machine learning, collaborative filtering, and information retrieval. Overall, Junjun is a highly motivated and skilled Principal Engineer with a strong passion for software engineering. He is a natural leader with excellent communication skills and a proven ability to drive innovation and success in complex engineering environments.