Personal Information
Name: navychen 陳海軍
Gender: Male
Date of Birth: 1977-08-04
Nationality CHN citizen
Current Working Place: Beijing
Email: navychen2003@hotmail.com
Mobile Phone:
Telephone (Home):
Summary
Talented and passionate software developer and 7 years of industry experience, result-oriented and having expertise in:
· Deep understanding of the C++ language, ability to design and develop complex software in C++. Regular C++ technical article writer.
· Working experience on over 5 C/C++ and Java projects.
· Author of several articles on C++/Java/C# language and framework, pay close attention to .Net platform (VC and C#).
· Acadamic and practical understanding of TCP/IP, protocol programming experiences.
· Rich experiences in on-site working, solving urgent problems, system architecture, project management and team leadership.
· Proficient read and written communication skills.
Education/Training
1995/09--1999/07: Beijing Jiaotong University
Major in Machinery Automation Control
Bachelor
Training:
2003 Informix and Oracle Training
2005 6 Active Ways for Manager, UML Training, Manager Training
IT Skills
· Solid background and practice on computer science with deep understanding
· Working experience on Object-Oriented analysis and design, generic programming;
· Proficient skills and deep understandings in C++
· Familiar with Java; pay close attention to C# and .Net platform
· Working experience on Linux, Solaris and FreeBSD
Working Experience
Period: 2008.1 –present
Company: independent(Project Collaboration)
Title: Technical Leader and Design
Job Responsibilities:
Design a system in my mind during long time, and work with friends to finish some projects.
Project introduction:
2008/1-2008/10: hawk search engine platform
Software environment: java, linux and windows
Hardware environment: PC Server
Used techniques: lucene, nutch, hadoop, java
Project information: a general search engine platform for medium and small-sized company or end users to implement local-site search or local-document search projects. It’s implemented by java, and absorb lucene and hadoop technology, and improved the index/segment structure and task process system to store several millions of documents in one pc server, it also has a new Chinese tokenizer to break Chinese sentence into good terms, such as sentence structure analysis(in developing).in long term, hawk search platform can connect with others in order to integrate to a large scale of search system with many small hawk system based on pc machines.more information please visit http://javenstudio.org.
Project introduction:
2008/4-2008/10: projects based on hawk search
Software environment: java, linux and windows
Hardware environment: PC Server
Used techniques: lucene, nutch, hadoop, java, c/c++
Project information: use hawk to build a dictionary full-text search and a develop document search application. Collaborated with friends to finish a email search system and email text analysis projects to let end-users can search and manage his self email quickly and easily.
Period: 2005.12 –2008.01
Company: China Yahoo
Title: Senior Software Engineer and Team Leader
Job Responsibilities:
According to web search project’s requirements, improve the search relevance of related projects, support and design solution of customizable search project, focus on search engine research and development, coding C++ and java program. Lead a team of 7 members and a virtual team of 6 members.
Project introduction:
2007/9-2007/12: question-answer search (first version)
Software environment: FreeBSD, perl/Java/C++, Php
Hardware environment: PC Server
Used techniques: Lucene Search Engine and Hadoop
Project information: analyse and extract question-answer text and related infomations from 10 millions web pages. Analyse user query to search these question-answer text and match more exact answer.
Responsibilities: According to product manage’s requirements, lead 4 engineers to implement a question-answer search system from the whole web pages
2007/5-2007/6: net dictionary
Software environment: FreeBSD, perl/Java/C++, Php
Hardware environment: PC Server
Used techniques: Vespa Search Engine
Project information: Customization of net dictionary search solution, mining data from 10 millions web pages
Responsibilities: According to product manage’s requirements, implement a net dictionary system from the whole web pages
2007/2-2007/5: Vespa Multi-index Research and Transformation
Software environment: FreeBSD, Vespa Search Engine
Hardware environment: PC Server
Used techniques: C++, Word segmentation and YWS
Project information: Test the affect of multi-index to search engine, try to find a way to improve search engine’s relevance, recall or performance..
Responsibilities: Reading the source code of Vespa search engine, focus on indexing module, and design a solution to.feed multiple segments of phrase into Vespa Index structures, also design a evaluation method to check the affect to relevance and performance.
2006/10-2007/1: china hadoop virtual team and application projects
Software environment: Linux, Java, Hadoop
Hardware environment: PC Server
Used techniques: Distribution file system, Distribution computing, Map/Reduce Computing Model
Project information: build a virtual team with 6 members and collaboration with US hadoop team, design some applications of current projects, and also join the JIRA to fix bugs of hadoop.
Responsibilities: Lead the virtual team and to build a stable cluster and implement some applications on it, such as co-occurrence calculation from query logs for spelling-check project, corpus analyze from web pages for YWS project, user statistics from user db, SDS log process project, Minerva project and so on. In the last 2 months, join the JIRA to fix several bugs of Hadoop DFS system and build two larger cluster..
2006/6-2006/12: Spelling-check project, release first version to v 3.2
Software environment: FreeBSD, C++, Php/extension, Java
Hardware environment: PC Server
Used techniques: C++, Php extension
Project information: According to the requirement of local product and algorithm of TW spelling project, design and develop a new spellingcheck product with pingyin recommendation function, and higher precision than before.
Responsibilities: Lead and bring up 2 graduates to finish this project. According to product manage’s requirements, implement a new spellingcheck and pingyin recommendation system, released version 2.0 to 3.2. Analyzed many query logs of web search and reviewed many kinds of phrase for building dictionary, improved the precision of recommendation to exceed competitor. And developed manage tools with good user experience for surfer.
2005/12-2006/12: related-search project, release first version to v 4.0
Software environment: FreeBSD, C++, Php/extension, perl, Vespa
Hardware environment: PC Server
Used techniques: C++, Php extension
Project information: According to the new requirement of local product and the deficiency of current system, design a new related-search product, collaborate with several engineers from Yahoo CN, US and TW.
Responsibilities: First manage this project and coordinate the collaboration of 5 engineer from CN/US/TW, design the first version’s architecture and implement the query analyze and results re-rank module. At the next versions, lead and bring up 2 graduates to finish this project. Improved many qualities on relevance, performance, headword recognition, adult filter, etc.
Reason for Leaving: Because without project, the company disintegrates, want to participate in collaboration of world-class software development, and the long-term development of individual.
Period: 1999.7 – 2005.10
Company: NET263, Inc.
Title: Expert Software Engineer, engineer manager(2004/2-2005/10)
Job Responsibilities:
Manager of Foundation Dept. of Mail R&D Center & Architect of Xmail
lead a group 10- engineers, direct and train other staff, distribute the tasks. Plan, design, and develop the foundation modules of Xmail, that include MSS, UD, MTA, POPSVR and MDA. Investigate, test, and implement improve-ments to existing procedures.
Analyze and design the architecture of Xmail system, or supervises the project of mail R&D center. Develop and implement the xmail common library for all the application based on Xmail platform.
Reason for Leaving: Because without project, the company disintegrates,
Project introduction:
2005/01-2005/05: Xmail platform service
Software environment: Linux, Solaris, C++
Hardware environment: PC Server and Sparc Server
Used techniques: C++, TCP/IP, SMTP, POP3
Project information: new service of Xmail platform
Responsibilities: Lead 5 engineers and design the new platform system
2002/12-2004/02: Xmail storage system and library
Software environment: Solaris
Hardware environment: Sparc Server
Used techniques: C/C++, TCP/IP, pthread, Mime
Project information: Xmail storage system and library
Responsibilities: Develop and implement the core system of Xmail, like MSS(Mail Storage System), MDA(Mail Deliver System), POPSVR(POP3 Server), and Xmail apllication library. In every bigness refactoring and repair of graveness malfunction, there is few times failed and few customer complained. And these systems have run very stably in the recent years.
2001/10-2002/12: mail-charge system
Software environment: Linux
Hardware environment: PC Server
Used techniques: C/C++, Java, oracle
Project information: mail-charge system
Responsibilities: From Dec, 2001 to Oct, 2002, Led and designed the mail-charge system of Xmail with Java language, designed and implemented a MVC framework like Struct for good cooperation.
2000/08-2001/10: shopping system
Software environment: Windows 2000
Hardware environment: PC Server
Used techniques: C/C++, COM, asp, sql server
Project information: 263 shopping product
Responsibilities: In a two month of 2001, Led and developed a shopping system with ASP language and SQL server, and implemented a shopping cart COM module by Delphi. This system is also used now and need few maintenance