Architectural engineer:

An architectural engineer applies the skills of many engineering disciplines to the design, construction, operation, maintenance, and renovation of buildings while paying attention to their impacts on the surrounding environment. In countries such as Canada, the UK and Australia, architectural engineering is more commonly known as Building engineering, building systems engineering, or building services engineering. In some languages, such as Korean, "architect" is literally translated as "architectural engineer".
With the establishment of a separate NCEES Professional Engineering registration examination in the 1990s, and first offering in April 2003, architectural engineering is now recognized as a distinct engineering discipline in the United States. But many practicing 'architectural engineers' hold degrees or registration in civil, mechanical, electrical, or another engineering field and become architectural engineers via experience. Conversely, many degree-holding architectural engineers have professional registration in civil or mechanical engineering, for example. The number of architectural engineering degree programs is increasing, but demand far exceeds the availability in the U.S., especially on the East and West Coasts, and in the South. Note that "architectural engineering technology" is different from architectural engineering.


Architectural engineers:
Architectural engineers' roles can overlap with that of the architect and other project engineers. Like architects, they seek to achieve optimal designs within the overall constraints, except using primarily the tools of engineering rather than architecture. In most parts of the world, architectural engineers are not entitled to practice architecture unless they are also licensed as architects. In some juristictions, registered professional architectural engineers are limited, by virtue of the exams taken, to practicing only one or more of the component areas of building engineering practice such as mechanical (HVAC/plumbing/etc.), electrical, structural, or fire protection.
In recent years there has been increasing emphasis on sustainable and green design, including in engineered building systems. Architectural engineers increasingly seek LEED ((R) USGBC) Accredited Design Professional (LADP) status in addition to their Professional Engineering registration.


Major specializations:

Architecture
Structural engineering
Construction engineering
Construction management
Project management
Green building
Heating, ventilating, and air-conditioning (HVAC)
Plumbing and piping (hydronics)
Fire protection engineering
Acoustics, noise & vibration control
Building power systems
Lighting
Building transportation systems