Wikipedia Architectural Designer
An architectural designer is an architect that is primarily involved in the design of buildings or urban landscapes, as opposed to the construction documents and management required to construct it. Architectural designers have good creative skills, imagination and artistic talent. Although most students of architecture are trained to be designers in school, not all become designers in practice. Non-registered designers are similar, but cannot legally refer to themselves as "architectural" designers in most parts of the world. Most are referred to as building designers, especially when not employed by an architectural firm.
Many large architectural firms have architectural designers that set what the general public views as the "style" of the firm's projects. These firms may actually have groups of designers (design studios), often divided into their own separate niche markets (education, healthcare, housing, etc.) In smaller architectural firms, the architectural designers tend to remain involved with the project right through completion, and actually take an active role in documentation and management, sometimes to the point of supervising construction. It is worth noting that most "star" architects, that have become household names, are known because of their skill as architectural designers.