
Architectural Engineer (PE) is a professional engineering designation in the United States. The architectural engineer applies the knowledge and skills of broader engineering disciplines to the design, construction, operation, maintenance, and renovation of buildings and their component systems while paying careful attention to their effects on the surrounding environment.

Architectural engineering, also known as building engineering or architecture engineering, is an engineering discipline that deals with the technological aspects and multi-disciplinary approach to planning, design, construction and operation of buildings, such as analysis and integrated design of environmental systems, structural systems, behavior and properties of building components and materials, and construction management.

In the field of engineering, a chemical engineer is a professional, equipped with the knowledge of chemical engineering, who works principally in the chemical industry to convert basic raw materials into a variety of products and deals with the design and operation of plants and equipment. In general, a chemical engineer is one who applies and uses principles of chemical engineering in any of its various practical applications; these often includedesign, manufacture, and operation of plants and machinery in industrial chemical and related processes ; development of new or adapted substances for products ranging from foods and beverages to cosmetics to cleaners to pharmaceutical ingredients, among many other products ; and development of new technologies such as fuel cells, hydrogen power and nanotechnology, as well as working in fields wholly or partially derived from chemical engineering such as materials science, polymer engineering, and biomedical engineering.

Chemical technologists and technicians are workers who provide technical support or services in chemical-related fields. They may work under direct supervision or may work independently, depending on their specific position and duties. Their work environments differ widely and include, but are not limited to, laboratories and industrial settings. As such, it is nearly impossible to generalize the duties of chem techs as their individual jobs vary greatly. Biochemical techs often do similar work in biochemistry.

Engineers, as practitioners of engineering, are professionals who invent, design, analyze, build and test machines, complex systems, structures, gadgets and materials to fulfill functional objectives and requirements while considering the limitations imposed by practicality, regulation, safety and cost. The word engineer is derived from the Latin words ingeniare and ingenium ("cleverness"). The foundational qualifications of an engineer typically include a four-year bachelor's degree in an engineering discipline, or in some jurisdictions, a master's degree in an engineering discipline plus four to six years of peer-reviewed professional practice and passage of engineering board examinations.

Engineering is the use of scientific principles to design and build machines, structures, and other items, including bridges, tunnels, roads, vehicles, and buildings. The discipline of engineering encompasses a broad range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied mathematics, applied science, and types of application. See glossary of engineering.

An engineering duty officer (EDO) is a restricted line officer in the United States Navy, involved with the design, acquisition, construction, repair, maintenance, conversion, overhaul and disposal of ships, submarines, aircraft carriers, and the systems installed aboard. As of August 1, 2016, there are approximately 835 engineering duty officers on active duty in the U.S. Navy, representing approximately 2 percent of its active-duty commissioned officers.

An engineering technician is primarily trained in the skills and techniques related to a specific branch of engineering, with a practical understanding of the relevant engineering concepts. Engineering technicians often assist engineers and technologists in projects relating to research and development, or focus on post-development activities like implementation or operation. An engineering technician is between a skilled craft worker and a technologist.

An engineering technologist is a professional trained in certain aspects of development and implementation of a respective area of technology. Engineering technology education is even more applied and less theoretical than engineering education, though in a broad sense both have a focus on practical application. Engineering technologists often assist engineers but after years of experience, they can also become engineers. Like engineers, areas where engineering technologists can work include product design, fabrication and testing. Also as with engineers, engineering technologists sometimes rise to senior management positions in industry or become entrepreneurs.

A machinist is a tradesperson or trained professional, who not only operates machine tools, but has the knowledge of tooling and materials required to create set ups on machine tools including but not limited to milling machines, grinders, lathes, and drilling machines.

A flight engineer (FE), also sometimes called an air engineer, is the member of an aircraft's flight crew who monitors and operates its complex aircraft systems. In the early era of aviation, the position was sometimes referred to as the "air mechanic". Flight engineers can still be found on some larger fixed-wing airplanes and helicopters. A similar crew position exists on some spacecraft. In most modern aircraft, their complex systems are both monitored and adjusted by electronic microprocessors and computers, resulting in the elimination of the flight engineer's position.

Geomatics is defined in the ISO/TC 211 series of standards as the "discipline concerned with the collection, distribution, storage, analysis, processing, presentation of geographic data or geographic information". Under another definition, it "consists of products, services and tools involved in the collection, integration and management of geographic data". It includes geomatics engineering and is related to geospatial science.
Military engineering is loosely defined as the art, science, and practice of designing and building military works and maintaining lines of military transport and military communications. Military engineers are also responsible for logistics behind military tactics. Modern military engineering differs from civil engineering. In the 20th and 21st centuries, military engineering also includes other engineering disciplines such as mechanical and electrical engineering techniques.

Naval architecture, or naval engineering is an engineering discipline incorporating elements of mechanical, electrical, electronic, software and safety engineering as applied to the engineering design process, shipbuilding, maintenance, and operation of marine vessels and structures. Naval architecture involves basic and applied research, design, development, design evaluation (classification) and calculations during all stages of the life of a marine vehicle. Preliminary design of the vessel, its detailed design, construction, trials, operation and maintenance, launching and dry-docking are the main activities involved. Ship design calculations are also required for ships being modified. Naval architecture also involves formulation of safety regulations and damage-control rules and the approval and certification of ship designs to meet statutory and non-statutory requirements.

A race engineer is a motorsport team member who analyses data to achieve the best performance from the vehicle and driver. The race engineer communicates with the team's data analyst, mechanics, and driver, both between and during races. Off the race track, the race engineer analyses historical data to determine the initial set-up for the next race event or test. The race engineer's duties also include hands-on management of the vehicle mechanics, organization of the testing schedule, and assurance of compliance with regulations. The race engineer seeks to make these activities occur as seamlessly as possible for the driver. Race engineers almost always have an academic degree in engineering or a related field.

A software engineer, sometimes abbreviated SWE is a person who applies the principles of software engineering to the design, development, maintenance, testing, and evaluation of computer software.

Technical drawing, drafting or drawing, is the act and discipline of composing drawings that visually communicate how something functions or is constructed.