Experience

Bybit

• Financial Services
• 500 - 600 Employee

• Principal Backend Development Engineer

  • Apr 2022 - Present



SkillsVR

• United States
• Education Administration Programs
• 1 - 100 Employee

• Senior Backend Developer

  • Apr 2019 - Apr 2022

  1. Design and develop some microservice independently (organization service, VR Session service, email service, and index service). Write the Swagger document of microservice API. Help to build the company's standard of payload. 2. Design and develop the backend for the frontend system of SkillsVR and Skills for Industry based on our brand-new microservice architecture. 3. Continue to improve our microservice architecture. Such as recommend defining the hierarchy and priority of all our microservices, adding a timeout to all our microservice requests, and downgrading. Show less



Sunlands Technology Group

• China
• E-Learning Providers
• 1 - 100 Employee

• Software Architect

  • Oct 2017 - Jan 2019

  1. Design and develop the Offline Data Analysis System for the multi-dimensional analysis (OLAP) on Hadoop/Spark supporting extremely large datasets. Use Hadoop、Hive、HBase and Apache Kylin. 2. Improve the performance of the existed Real-time Analytics System. Reduce coupling of the modules. Use Apache Druid to replace Elastic Search in some scenarios such as data summarization/roll-up or many aggregations. 3. Design and develop a unique user id system to solve the problem that a student has different id in our several systems because of legacy problems. That is the foundation of our own data mining. Show less



JD.COM

• China
• Software Development
• 700 & Above Employee

• Software Architect

  • Mar 2015 - Mar 2016

  1.Chief programmer of Goods System Refactoring Project for JD’s Core Platform (See implementation via: https://open.jd.com/home/home#/doc/api?apiCateId=48&apiId=1587) 2.Key programmer in designing, structuring and deploying JD’s core Categories System Project (See Implementation via: https://open.jd.com/home/home#/doc/api?apiCateId=62&apiId=2821) 3.Achieved Database Migration Project (4 core billion-record level tables’ migration from Oracle to Mysql). 4.Manager for hundreds of Linux servers’ administration. 140+ of them are webservers , while the other 100+ are cache server. Mutable instances are run on each server, due to Redis Server’s single process and single thread feature. Show less



ChineseAll.com

• Italy
• Online Audio and Video Media
• 1 - 100 Employee

• Software Architect

  • May 2012 - Mar 2015

  1. Project Leader and Manager of chineseall.cn. 2. Lead developer of backend of www.chineseall.cn. 3. Design and Develop the search engine of books. 4. Manager of over 20 real Linux servers and 30+ elastic cloud side Linux serves. 5. Manager of inner and outer technical projects cooperation 1. Project Leader and Manager of chineseall.cn. 2. Lead developer of backend of www.chineseall.cn. 3. Design and Develop the search engine of books. 4. Manager of over 20 real Linux servers and 30+ elastic cloud side Linux serves. 5. Manager of inner and outer technical projects cooperation



Feinno

• Wireless Services
• 1 - 100 Employee

• Software Architect

  • Jun 2010 - Jun 2012

  1. Key programmer and architect of www.specl.com (b2b2c online shop). 2. Develop Search Engine of Goods, use master-slaves solr servers to resolve the data update and distruibute. 3. Use Mahout as recommendation engines to recommend goods(Collaborative Filtering, Item-based, User-based) 4. Design and develop Web chat system based on netty, websocket and long polling. 1. Key programmer and architect of www.specl.com (b2b2c online shop). 2. Develop Search Engine of Goods, use master-slaves solr servers to resolve the data update and distruibute. 3. Use Mahout as recommendation engines to recommend goods(Collaborative Filtering, Item-based, User-based) 4. Design and develop Web chat system based on netty, websocket and long polling.



Alibaba Digital Media & Entertainment Group

• China
• Technology, Information and Internet
• 100 - 200 Employee

• Technical Team Manager

  • Oct 2007 - Jun 2010

  1. Software-structure-level tuning of Advertisement System based on user’s behavior analysis. 2. Design and develop CPM(Cost Per Mille) advertisement system.(kind of like FreeWheel) 3. Develop Ad scheduling system. 4. Develop CRM System. 5. Research / practice on new technology such as Hadoop, Hive, MongoDB & Cassandra. 1. Software-structure-level tuning of Advertisement System based on user’s behavior analysis. 2. Design and develop CPM(Cost Per Mille) advertisement system.(kind of like FreeWheel) 3. Develop Ad scheduling system. 4. Develop CRM System. 5. Research / practice on new technology such as Hadoop, Hive, MongoDB & Cassandra.



Sohu.com

• China
• Technology, Information and Internet
• 400 - 500 Employee

• Senior Software Developer

  • Oct 2002 - Jul 2007

  1. Develop News Search Engine a) Use Berkeley DB for reverse index persistence b) The Algorithm of Segment words modification c) Develop Multithread Web crawler 2. Key developer of Sogou Advertisement Bidding System a) Develop Bidding Convention System. b) Develop Backend system. c) Develop Billing and settlement system. d) Leader of several data migration projects (10-million-record level database migration from MS SQLServer to Oracle) 1. Develop News Search Engine a) Use Berkeley DB for reverse index persistence b) The Algorithm of Segment words modification c) Develop Multithread Web crawler 2. Key developer of Sogou Advertisement Bidding System a) Develop Bidding Convention System. b) Develop Backend system. c) Develop Billing and settlement system. d) Leader of several data migration projects (10-million-record level database migration from MS SQLServer to Oracle)