This individual independently plans, performs the moderately-defined responsibility for the designing, implementing, verifying, validating and commercializing of the Wireless WAN (or cellular) modem software as a product or component within a product. Work involves implementation of a multi-RAT (Radio Access Technology) cellular modem from industry specifications (most notably 3GPP with LTE and 5GNR) and efficient implementation of the shared resources of a multi-RAT modem. Closely collaborates with other functional groups including modem systems, modem hardware and modem firmware to develop a cost effective, high quality and high capability modem software package which meets industry leading quality metrics and customer requirements with high performance and acceptable cost. Acts as a strong contributor at design reviews and project meetings.