What is an on call Visual Basic programmer?

On Call Visual Basic Programmers are IT professionals who are available to provide support, troubleshooting, and development services for applications written in Visual Basic, typically on an as-needed or emergency basis. They help maintain, update, and repair Visual Basic code, often responding to urgent requests outside of regular business hours. Their role is crucial for organizations that rely on legacy Visual Basic systems and require prompt attention to minimize downtime and maintain business continuity.