Harry Qin Email & Phone Number

Oakville

Toronto, Canada Area

Beijing

Led a 30+ team to developed auto.sohu.com, Apps (IOS and Android) and backend systems. 100M PV/day, 5M UV/day (Apps included)Project: Big Data Platform and Personalized Recommendation System• Technologies: Hadoop 0.20, MapReduce (Java), Spring MVC, MySQL, JQuery, Kafka, Eclipse, HTML5, CSS, Bootstrap, Git, Maven, Mahout• I founded and led the big data team (3 developers), produced the user’s data of Auto.SOHU.COM, includes web logs (2G/day, preprocessed) and sales leads (10k/day). The platform includes Hadoop, a report portal (spring MVC, JQuery and MySQL cluster). We provided a personalized recommendation base on analysis of user behavior. Project: Search• Technologies: lucene 2.2, Lucene 3.5, Eclipse, Json, Maven, SVN • Developd the RMMSAnalyzer extends Analyzer for chinese word segmentation, and added the ReverseMaxMatchSegment. Customized a SynonymsFilter, developed a new words detection tool (CRF: condition random field), Customized a distanceSort to deal with new word or phrase (lucene.search.PhraseQuery must use the double quotation marks).Project: AutoDB• Technologies: Java, MySQL Sharding, JQuery, Ajax, Redis, Squid, Nginx (Lua), Eclipse, SVN• The AutoDB is a product catalog of all cars. Include of features, specs, images, videos, customer reviews and dealer prices. It’s the most visited channel (60-80M pv/day).Features:1. Separating static and dynamic Web content. All static content (html, images, videos, css, js files) delivered to the world-wide CDN by Squid, the dynamic content (dealer prices, user reviews) retrieve from web services asynchronously (in the background) by JQuery Ajax.2. Stored all images in DFS instead of Files System. Because too much thumbnails size, I made the thumbnail when request (Nginx + Lua + GraphicsMagick).3. Optimized the data access performance by MySQL Sharding and Redis.

Beijing City, China

Play as solution architecture, leading the design, development, maintenance of whole Website.Responsible for large projects delivery with high quality on schedule and on budgetLead and build up an high efficient teamProject: SNS • Technologies: ASP.NET, VS 2005, C#, XML, JQuery, WCF, SQL Server 2005 Cluster, Enterprise Library, 3-Tired, T-SQL Stored Procedure. • This project includes feed, friends, messages, events, groups, interests etc. • Designed the architecture and led a team of 7 developers to developed whole product.Project: Service Provider Platform • Technologies: ASP.NET, VS 2005, C#, XML, JQuery, WCF, SQL Server 2005 Cluster, Enterprise Library, 3-Tired, T-SQL Stored Procedure. • Designed the architecture and led a team of 5 developers and 2 designers to developed whole product.

Beijing City, China

Project: China Mobile IMPS (Instant Messaging and Presence Service) • Technologies: VS.Net 2003/2005, C#, Web Service, SQL Server 2000/2005, T-SQL Stored Procedure, Design Pattern, 3-Tired design application, Microsoft Live Communication Server.• This project is a seamless connection between mobile communication and the Internet, free SMS. It integrates multiple telecommunication methods such as IVR, SMS and GPRS, covering users’ communication demands on complete real-time voice service, quasi real-time text and small data telecommunication service and non-real-time telecommunication service. The service combines multiple telecommunication services such as SMS, on-line messages, voice chatting, CRBT, on-line service hall and file sharing. • In the team, developed system service (daemon-services) and WAP Client. The system service is an agent service server, it keeps all data (buddy list, ACL, status, messages) for all stateless client (Web, Wap, KJava). Including SIP protocol, .NET Remoting (WCF), WML, Web Service, .NET GC Optimization.

Beijing

Project: LMS (e-Learning management system)Technologies: ASP.NET, VS 2003, C#, XML, SQL Server 2000 Cluster, Java, J2EE EJB 2.0, JSP, Oracle RAC, T-SQL Stored Procedure, PLSQL Stored Procedure, 3-Tired ApplicationOZTime is a wholly owned subsidiary of Zi Corporation (NASDAQ: ZICA) (TSE: ZIC). Led a team to developed the Amethi Learning Management System, which is enterprise software for corporate training, and systems integration. The enterprise edition developed in Java and Oracle RAC, the SMB edition developed in .NET and SQL Server.

Beijing City, China

Project: B2C portal, SCM and B2B platform• Technologies: ASP, VS 6, VBScript, SQL Server 7, T-SQL Stored Procedure, CGI• 8848.net was the largest e-commerce organizations in China from 1998 to 2001.• In the team, developed the cart, pay interfaces, warehouse modules Project: B2B platform• Technologies: Java, J2EE, EJB 1.0, JSP, Oracle 8, WebLogic 5.1, PLSQL Stored Procedure• In the team, developed search, negotiation, warehouse modules