Wai Yip Tung

Contact

wy@tungwaiyip.info

Location

San Francisco, California, USA

Home page

http://tungwaiyip.info/

SUMMARY

I am a software architect with broad vision and keen interest on innovative ideas and emerging technologies, at the same time a very driven and meticulous hands on programmer whose mind lights up when encounter challenging problems. I am a champion of agile methodologies and automated unit testing.

My technical expertise includes object oriented design, web applications, SQL and non-relational databases and multithreaded applications in Windows and Unix environment.

I am interested in software arhitecture/product development roles in the area of web, networking, search, multimedia and other new venture and emerging technologies.

TECHNICAL SKILLS SUMMARY

EXPERIENCE

Ironport Systems (Now part of Cisco)
Software Engineer

05/2005 - Present

Built the network management appliance for our security appliances, focusing on the backend projects that utilize databases, Python and the web programming framework.

• Prototype work on a web analytics database. This project involves building a large-scale high performance database with extensive algorithm work. (Lucene, Python C-extension)

• Designed and developed the web framework to support centralized configuration for multiple products of multiple versions.

• Designed and developed the centralized reporting engine (BerkeleyDB).

• Designed and developed the spam quarantine engine (PostgreSQL).

MindRetrieve

09/2004 - Present

I have launched an innovative, open source, cross platform desktop search application MindRetrieve to help users search and organize the web they have seen.

• HTTP caching proxy with index and search engine (Lucene).

• Embedded web server for UI generation (Python).

• Hybrid hierarchical and tag based bookmarking system.

Cisco Systems
Software Engineer

06/1999 - 05/2005

Architecture, design and development of a VoIP telephony server (IVR, ACD). This is a Java based, multithreaded application server. My contribution is primary in bridging telephony applications, which are historically proprietary, with standard web technology. Details of various projects are listed below.

Intelligent Networking

• As a member of a startup team, built an nightly build/unit testing/reporting system (Python, Junit, Linux). Instilled the culture of automated testing at the inception of the project.

• Developed a rule engine that does high performance pattern matching in parallel.

• Integrated an embedded Javascript scripting engine.

VoiceXML interpreter

• Led the development of the VoiceXML interpreter (voice browser). VoiceXML is a W3C standard markup language for building web based voice applications utilizing speech recognition (ASR) and text-to-speech (TTS).

• Represented Cisco in W3C voice browser working group (http://www.w3c.org/voice). Drafted the VoiceXML 2.0 and other related specifications. Present the company's requirement and report to the team on the design principle and motivation of the standard.

• Developed support for HTTP 1.1, MIME uploading, cookie and SSL. Embedded an ECMAScript engine (Mozilla Rhino).

• Built an automated test tool (JUnit). Led the test team to build a test suite. Resulted in automation of high percentage of test cases.

• Conceived and developed several prototype applications, including unified messaging and multi-modal applications. Some sample applications became marketing's favorite and has went on to road shows.

• Developed a convergence plan for several independent VoiceXML implementations in Cisco. Participated and supported the migration of several Cisco’s voice products to VoiceXML (call center, voice messaging systems).

IVR Application Server

• Lead the development of a web base administration tools (IIS, HTML, CSS, ASP, JavaScript, Applet, JNI, RMI, COM). Later migrated to Java based implementation (Servlet, JSP, struts, taglibs).

• Created web connectors for the IVR applications. This is an enabling technology providing web access for telephony applications.

• Setup the project's build process using Ant.

Optimal Networks
Senior Software Engineer

8/1998 - 6/1999

• Designed and developed a network performance analysis application for distributed, multi-tiered applications on local and wide area network (similar to a distributed Sniffer). Created network traffic visualization and drill down view (COM, ATL, Visual Basic).

Canon Information Systems
Software Engineer

4/1997 - 8/1998

• Developed a document management system for the Canon multifunction machine, an all in one printer with scanning, copying and faxing capabilities (VC++, ODBC, Watcom database).

Titan Group Limited (Hong Kong, Singapore)
Project Leader

8/1993 - 8/1996

• Designed and developed a computer maintenance management system (CMMS). Features include work order management, workflow management, maintenance scheduling, and performance evaluation etc. My role is in designing GUI, database schema, scheduling algorithms and custom Delphi components (SQL, ODBC, SQLBase, Delphi, MFC).

EDUCATION

• Master in Computer Science, 1993, Chinese University of Hong Kong

• Bachelor in Computer Science, 1991, Chinese University of Hong Kong

REFERENCES

Available Upon Request