An IBM Rational Synergy developer primarily manages and controls software configurations, ensuring seamless collaboration among development teams. They handle version control, component-based development, release management, and change management. They use IBM Rational Synergy's tools to integrate tasks, track changes, and manage different versions of software products. They create project plans, configure workflows, and maintain project timelines. They also troubleshoot issues, handle user support, and guide teams on best practices for utilizing the software. They can work in various industries, utilizing their skills to improve software development processes and enhance product quality.