Android telephony, Modem-RIL, Modem NV paramameter managment.

• Implemented and tested requirements for Verizon, AT&T and T-mobile, in regards to telephony UI, Bluetooth, VoLTE/ViLTE, WiFi calling, modem-RIL, modem NV, ISIS mobile pay for the Xperia phones PLAY, TL LTE30at, ION, Z, Z2, Z3 and Z3v as well as the Xperia tablet Z.

Worked on Xperia X1 and Xperia X2, Windows Mobile 6.1 and 6.5.2 Professional mobile phones.

• Implemented a customization application, various test/verification applications and a low level keyboard driver.

Worked as consultant in mobile devices, mobile infrastructure, mobility, system architecture, data management and more.

• Designed, developed, tested, debugged, a provisioning service using OTA for a Toshiba WCDMA cell phone intended for Vodafone KK European and Japan market.

• Worked on, tested and debugged a SIP client in Obigo browser utilizing Ajax, for a Samsung WCDMA cell phone enabling presence, chat and other peer to peer features between ‘buddies’.

Designed, developed, tested, debugged, and maintained multitasking real-time embedded call processing software for the Ericsson CDMA2000 Base Station Controller (BSC) for circuit-switched voice and data and for high-speed packet data. Developed BSC software in a Unix environment using C++ Object-Oriented programming language and OSE RTOS.

• Improved error tracing in BSC’s AirInterfaceManager (AIM).

• Developed logging in AIM of fatal call errors that result in dropped calls.

• Implemented support for IS-95 Intra-BSS Hard Handoff feature in AIM.