A Hosted Voice developer designs, develops, and maintains voice communication systems hosted on cloud platforms. They leverage technologies like VoIP (Voice over Internet Protocol) to facilitate telecommunication services over the internet. Their responsibilities include programming and integrating APIs, ensuring system compatibility, implementing security protocols, and troubleshooting technical issues. They also work on features like call routing, voicemail, call recording, and interactive voice response. They may also be involved in user interface design for telephony applications and are expected to stay updated with advancements in voice technology. They often work closely with network engineers and IT teams.