Analyzes, develops, and designs software for the organization's products and systems, with focus on cellular sub-systems. Performs system integration and support of cellular software components, Modem, RIL, framework and UI. Technical knowledge of wireless technologies and protocols such as GSM, CDMA, HSPA, LTE, understands operator certification, test cases, requirements & regulatory process (GSMA and mobile carriers). Develops, validates, and tests: structures and user documentation. Works under consultative direction toward predetermined long-range targets. Determines and pursues courses of action essential in obtaining desired outcomes.