A Twilio developer is responsible for building and maintaining the Twilio platform, which enables developers to programmatically make and receive phone calls and texts using the company’s web-based APIs. As a Twilio developer, you would likely work on building new features or integrations into the platform, as well as troubleshooting any issues that arise. In addition to having strong technical skills, a successful Twilio developer must be able to communicate effectively with other members of the team in order to build a high-quality product.