To thrive as a VB6 Developer, you need strong knowledge of Visual Basic 6.0, experience in software debugging, code maintenance, and familiarity with legacy system integration, often supported by a degree in computer science or a related field. Familiarity with source control tools like Git, experience with relational databases (such as SQL Server), and sometimes certifications in Microsoft technologies are highly valued. Strong problem-solving skills, attention to detail, and effective communication are important for collaborating with stakeholders and adapting legacy applications to modern requirements. These skills and qualities are vital for ensuring the reliability, scalability, and smooth migration of business-critical applications built in VB6.