What does a backend software developer do?

A Backend Software Developer is responsible for building and maintaining the server-side logic, databases, and application programming interfaces (APIs) that power web and mobile applications. They ensure that data is properly stored, secured, and retrieved, and that the backend communicates effectively with the frontend or user-facing side. Backend developers often work with programming languages like Java, Python, Ruby, or Node.js, and use frameworks and tools to optimize application performance and scalability. Their work is crucial for ensuring that applications run smoothly, handle user requests efficiently, and remain secure.