Quantitative hedge fund focus on financial derivatives, such as index, stock, commodity, future, option.

Focus on infrastructure, data warehouse, antispam, optimize ads performance(ctr/cvr prediction), data visualization.

1. Responsible for project management and operation of hadoop platform team2. Responsible for R&D and project management of distributed storage team2012.2 - 2012.5 lead hadoop transparent compression project, and promote it to production cluster. This project help to save 40% storage space, and which cost hunderds of million.2012.2 - 2012.7 lead hdfs2 project and promote it to production cluster(which can handle 1W production cluster and has 5-10 times of throughput compare with hdfs).

focus on research and develop on distribute storage system,speculate on hadoop and hbase. Has provide several patches to apache community and will take a presentation on hadoop china 2011.1. work on hbase, to make hdfs fit for hbase, make some optimize on stability and low latency.2. work for scalability on hdfs. we make meta data of hdfs into several service and which can provide 1 billion file number and 10 thousand machine number in one cluster.3. work for high available on hdfs. we make hot backup node for master of hdfs, and can keep fail over time less than 5 minutes 4. work for high disk utilization. We provide a mechanism can compress cold data on hdfs which can provide random io access as while.It can improve disk utilization for 2-4 times (depend on compress ratio)

Manly focus on distribute system develop and support.1. In Aliyun, apsaraIt's a distribute operation system, it deal with some distribute problem,such as resource schedule, fail over and load balance, like hadoop. 2. In taobao, time tunnel.It's a distribute message queue which can provide high availabl e and hign qps.It designs as pub/sub structure and collect log data from front server(such as mysql, apache, jboss), and dispatch data to many subscribers.

1. net meeting system development. has develop net meeting system on cross-os, which can provide app-share, document share, voip, and video as while. 2. storage system R&Ddesign and develop storage system like NAS which can provide nfs interface and in kernel space, we can provide two storage hot backup.