Who is primarily responsible for building API implementations in a MuleSoft Integration project?

In a MuleSoft Integration project, the primary responsibility for building API implementations falls on the API Developer. This role focuses specifically on the technical aspects of the API lifecycle, including designing, developing, testing, and deploying APIs using MuleSoft's Anypoint Platform. API Developers are skilled in using various tools and languages to create robust and scalable API solutions that meet the business requirements.

An API Developer works closely with other roles, such as the API Designer, who conceptualizes the API's structure and behavior but may not engage in the coding aspect. The Integration Architect provides higher-level guidance on integration strategies and architecture but does not typically perform hands-on development. The Operations Team is more involved with the deployment, monitoring, and Maintenance of the APIs rather than the actual building process. Therefore, the API Developer is the key player responsible for turning API designs into functional code and ensuring successful implementation in the integration project.