An Infrastructure as a Service (IaaS) developer designs, deploys, and manages virtualized resources on cloud platforms. They work on scalable systems and networks via cloud services like AWS, Google Cloud, or Azure. They ensure the infrastructure's reliability, scalability, and efficiency. This involves setting up virtual machines, handling data storage, network configurations, and maintaining security protocols. They also troubleshoot issues and optimize performance. Furthermore, they may work collaboratively with other developers and stakeholders, providing them with the necessary infrastructure support for application development and deployment. Their role is crucial in the digital transformation of businesses.