Brought on board to work as a pioneer software developer to develop Z-wave controller middleware from scratch. Collaborate with field application engineers and technical supports to analyze customer requests and implement technology solutions as appropriate to drive improvements. Oversee Z-wave Certification process for Z-wave controller. Local consultant for new developers on Z-wave protocol. Provide technical assistance to other developers’ projects.▪ Designed for ease-of-use through… Show more Brought on board to work as a pioneer software developer to develop Z-wave controller middleware from scratch. Collaborate with field application engineers and technical supports to analyze customer requests and implement technology solutions as appropriate to drive improvements. Oversee Z-wave Certification process for Z-wave controller. Local consultant for new developers on Z-wave protocol. Provide technical assistance to other developers’ projects.▪ Designed for ease-of-use through auto-discovery of Z-wave for IP (Z/IP) Gateway and auto-configuration of devices added to the Z-wave network.▪ Played instrumental role in supporting 2600+ certified Z-wave products from Z-Wave Alliance’s over 700 member companies by implementing a Device Database to address quirky implementation of Z-wave in some devices.▪ Enhanced OpenSSL library to support multi-homed implementation for use in middleware Datagram Transport Layer Security (DTLS) connection.▪ Successfully implemented Z-wave Security 2 (S2) in device emulator software.Major Achievement:✓ First to develop a full-fledged middleware library that was Z-Wave Certified by Z-Wave Alliance. This library forms the basis for controller application development by more than 80% of customers. Show less

Same as the job description for Silicon Labs due to Silicon Labs acquired the IoT division of Sigma Designs in April 2018.

Recruited to develop software for voice/video-over-IP hardware devices.▪ Customized embedded Linux kernel to ensure that it works on VLAN, audio driver interfaces with dedicated DSP and supports of LCD display, NAND flash memory, SD card and WIFI.▪ Developed USB driver to interface with Subscriber Line Interface Circuit (SLIC), host interfacing DSP driver and watchdog, digital camera and touch-screen input drivers.▪ Designed and implemented DSP system level software architecture on… Show more Recruited to develop software for voice/video-over-IP hardware devices.▪ Customized embedded Linux kernel to ensure that it works on VLAN, audio driver interfaces with dedicated DSP and supports of LCD display, NAND flash memory, SD card and WIFI.▪ Developed USB driver to interface with Subscriber Line Interface Circuit (SLIC), host interfacing DSP driver and watchdog, digital camera and touch-screen input drivers.▪ Designed and implemented DSP system level software architecture on top of a multi-threading kernel. Developed DSP driver to interface with audio codec and SLIC.▪ Established excellent interoperability with VoIP service provider servers through customization of Session Initiation Protocol (SIP) stack.Major Achievement:✓ Fixed major bug in Monta Vista Embedded Linux (a RTOS) NAND flash memory driver to prevent data corruption and to speed up memory write. This helped to avoid adding additional cost to design in a hardware NAND flash memory controller in video phone design. Show less

Responsible for designing sound card circuitry and PCB prototyping.

Responsible for troubleshooting sound card prototypes and writing test program to test sound card audio quality using an audio analyzer.