Process Architect

Process Architect: the person with this role is focused on defining, redesigning, and optimizing activities in a process or group of processes. These people work with Business Architects to look at how processes need to change to deliver business goals, with Solution Architects to ensure performance, maintainability, and scalability, and with Enterprise Architects to identify IT capability, limitations, and support changes.

Source: Guide to the Business Process Management Body of Knowledge – ABPMP BPM CBOK V3.0.

See also Optimizing an organizational process structure.