Designed and implemented various protocols such as IPFIX (IP Flow Information Export), TWAMP (Two-Way Active Measurement Protocol) and DHCP on IPOS (the main routing OS for Ericsson’s IP and cloud products).As a Scrum master, coordinated the team with stakeholders to execute projects in Agile methodologies. Responsibilities including Scum/Retrospective meeting, Sprint planning/demo, backlog tracking and release/resource scheduling.Designed, implemented and integrated License Manager module for IPOS. Received Ericsson's Spacial Achievement Award due to contribution in this work.Designed and implemented Policy Based Forwarding (PBF) engine on ERS (Ericsson Routing Suite, a full-fledged routing stack). This engine allows customers to directly implant policies into routers’ chipset for managing traffic and provides a proprietary way (similar to OpenFlow) for implementing Software Defined Networks (SDN).Experienced with C/C++, JAVA, Python, Perl, Git/Gerrit, Jenkins, Coverity, Valgrind, gdb, CMake, Wireshark, XML, JUnit, Xerces, OpenSSL, X.509, IPFIX, TWAMP, DHCP, TCP/IP, Linux, OO Design, Rational Software Architect.

Implemented and maintained various features on AXE (a multi-board multi-OS 2G/3G platform).Implemented a new OAM module in C++ under Windows Server 2003 to allow users to configure multiple data plane boards running OSE (an Ericsson real-time OS) into cluster.Implemented and debugged dual stacks feature in C under SUSE Linux to bypass kernel-based TCP/IP stack for achieving better traffic throughput.Developed and debugged device drivers such as memory management unit (MMU) and Event Log in C under OSE (real-time OS).Experienced with C/C++, OO Design, UML, Rational Rose, ClearCase, gdb, Windbg, multi-threading, Linux kernel and device drivers, Windows Server, OSE.

Developed and debugged (MTP-3b and SAAL) protocol software for WCDMA core network (SGSN) using C in Tornado/VxWorks environment.Designed and developed a tool to simulate a large volume of user calls for performance test.Good understanding of GSM/GPRS/UMTS system architectures, protocols and interfaces.Experienced with C/C++, Java, real-time linux, Tornado, VxWorks, GSM, WCDMA.