Facilities engineering evolved from "plant engineering" in the early 1990s as U.S. workplaces became more specialized. Practitioners preferred this term because it more accurately reflected the multidisciplinary demands for specialized conditions in a wider variety of indoor environments, not merely manufacturing plants.
Today, a facilities engineer typically has hands-on responsibility for the employer's Electrical engineering, maintenance, environmental, health, safety, energy, controls/instrumentation, civil engineering, and HVAC needs. The need for expertise in these categories varies widely depending on whether the facility is, for example, a single-use site or a multi-use campus; whether it is an office, school, hospital, museum, processing/production plant, etc.

History
The term Facilities Engineer emerged in the 1990s from the already existing vocation of the Plant Engineer. This evolution occurred in order to match the rapid advancements in technology at the time. There was a need for a more specialized and dynamic type of engineer, while still having the general background knowledge and experience of a plant engineer or a stationary engineer. These skills consisted of, but were not limited to: mechanical engineering, electrical engineering, environmental engineering, civil engineering, business management, statistical analysis, communications, and effective supervision skills. The result of this development was a jack-of-all-trades engineer who takes their specialization into a facility and helps it operate unhindered at its highest level of efficiency. That is to say that a facilities engineer is quite simply a plant engineer placed into a position where they must utilize a certain set of skills based upon the necessity of the employer. This need generally calls for hands-on maintenance but can also include managerial or even supervisory responsibilities. While the purpose of a facilities engineer may seem straight forward, the large variety in facilities within different industries calls for a very broad range of training.

Responsibilities
Facilities engineers have the responsibility of establishing different projects in support of the plant's design and operation needs to be able to ensure an efficient and all the different aspects of safety are met up to standard. The industries that Facilities engineers can go into are the one that would typically require different plant layout plans, need organizational needs, and require different equipment and purchasing needs such as Health Care, Aerospace/Defense, and Energy/Utilities industries. They can also seek employment position such as operating engineer, a chief engineer, a facilities manager, maintenance foreman, or as a building maintenance supervisor. (learn.org) Facilities Engineers may be given management positions in the plants that they are working on to supervise the other facilities engineers and their license requirements, equipment provided, and getting the rights vendors hired to be able to meet the needs for the plant or facility. When working on certain projects, facilities engineers must meet the appropriate amount of resources such as hands and materials.

Due to the broad nature of a Facilities Engineer, the responsibilities utilized in one facility could be drastically different than in another. For example, a facilities engineer working at NASA Ames located at Moffet Field, would be responsible for helping to oversee and assist specialists in building, renovating/modernizing, and preserving the facilities on the campus; the facilities engineering branch also includes architectural engineering, civil engineering, structural engineering, mechanical engineering, electrical engineering, environmental engineering, and pressure system safety.
In short, the responsibilities entail any type of engineering support that goes on at the facilities' location in addition to the construction and renovation of the facilities themselves. While, a facilities engineer working for the Indian Health Service would be responsible to ensure that health care facilities and related support facilities are in a safe and functional condition. These skills entail civil engineering, mechanical engineering, and electrical engineering, as well as specialization in medical equipment, property management, and various aspects of engineering support.





