I have 15 years of experience in software development and have worked as a programmer, software engineer, senior programmer, development team leader, and project manager. Since December 2005, I have been engaged in the development and management of smart phone operating systems and application software. I have been involved in the development of smart phone software such as Linux, S60, and Android. Since 2013, I led team completed the requirements analysis, UI/UE design, and architecture design, functional development, testing and delivery work, delivering APP and mobile application solutions for the Android/Ios platform.