What does a backend API developer do?

A Backend API Developer is responsible for designing, building, and maintaining the server-side logic and APIs that power web and mobile applications. They ensure that data is efficiently managed, secure, and accessible to front-end interfaces by creating endpoints, integrating databases, and implementing authentication systems. Their work involves using programming languages like Python, Java, or Node.js, and collaborating closely with front-end developers to deliver seamless user experiences. Additionally, they focus on optimizing performance, troubleshooting issues, and ensuring the reliability of the backend infrastructure.