A wireless communications engineer specializes in research, development, and implementation of wireless technology. Your duties in this career require you work with electronics, wireless phones, radio frequency tech, broadband networks and systems, and routers and modems. You work heavily in research and development as part of a project team and introduce new products and designs for a device. You also focus on improving the efficiency of existing ones. Your responsibilities include designing a system that produces optimum signal strength, speed, security, and ability on the network, and troubleshooting current networks to work at full capacity.