Jincheng Sun is a PMC member of Apache Flink and ACL Beijing, He is also a committer for Flink, Beam, IoTDB. He is also an engineering lead at Alibaba Group. During 9 years working experiences at Alibaba, he participated and lead some of the critical systems inside the company and started the development of PyFlink.

Jeff has 11 years of experience in big data industry. He is an open source veteran, start to use Hadoop since 2009 and is PMC of several Apache projects Tez/Livy/Zeppelin and committer of Apache Pig. His past experience is not only on big data infrastructure, but also on how to leverage these big data tools to get insight. He speaks several times on big data conferences like Hadoop summit, Strata + Hadoop world. Now he works in Alibaba Group as a staff engineer. Prior that he works in Hortonworks where he developed these popular big data tools.