Which role is primarily responsible for building API implementations as part of a typical MuleSoft...

API Developer:This role is responsible for the actualcoding and implementationof the API. They use Anypoint Studio to build the Mule flows, configure connectors, write DataWeave transformations, and ensure the API functions according to the design specification1.

Why others are incorrect:

API Designer:Responsible for writing the RAML/OAS contract (specification) in Design Center, usuallybeforeimplementation begins2.

Integration Architect:Responsible for high-level design, pattern selection, and governance, not the day-to-day coding of flows3.

Operations:Responsible for deployment, monitoring, and maintenance after the application is built4.