7 years experience of Linux development (begin to study Linux on the year 2000 when still at school).
3 years experience of C development in Linux and 4 years of C&C++.

Have a good knowledge of software design, development, testing and Linux system programming.
Expert in C/C++ network programming in Linux, VOCAL sipstack, RADIUS, all kinds of voip softphone, Asterisk configuration & dev, BBS system configuration & dev, Symbian client dev.

Expert in Tech/Protocols: NAT traversal, SIP, RADIUS, protocol encryption, Kademlia
Expert in VoIP related business flow
Expert in Symbian programming.

Good Command of communicating skills with people.

Experiences of:
Windows / WINCE programming using C++/C#, embedded system development.
sipX, reSIProcate, wengophone, OPAL, SER, freeswitch.

Achievement:
Fixed a memory leak problem of innbbsd, make BBS can do mailing list function. Avoid a DDoS attack inside the school network on 2003.
Produced and improved several VoIP related software products of the company (details in the work experiences )

Ported sipX sipstack to WINCE (off hours).