A Blackpearl developer designs, develops, and maintains business process applications using the Blackpearl platform. They create workflows to automate and optimize business processes, integrate various systems and databases to ensure seamless functionality, and troubleshoot any issues that arise. They also tailor the platform to meet the specific needs of the business, which may involve custom coding. Additionally, they may provide technical support to end-users and collaborate with other teams to understand their business process needs. Their role is crucial in streamlining business operations and improving overall efficiency using the Blackpearl platform.