Hiring an IBM Rational Synergy developer can be highly beneficial as they specialize in managing and controlling source code, documents, and other development artifacts. Their skills can streamline your project lifecycle, reducing time and cost while enhancing productivity. They can help you maintain consistency, traceability, and security across your development environment. Additionally, they can improve communication and collaboration within your team, ensuring everyone is aligned and updated. Their expertise in IBM Rational Synergy can help in avoiding common pitfalls and leveraging the tool to its maximum potential.