This series covers positions that involve primarily advisory, research, analytical, or other professional work in the science of ecology. Ecology utilizes a systems approach to study the interrelationships of organisms with each other, with their physical and chemical environment, and with society. Such relationships are considered primarily at the levels of individuals, populations, communities, and ecosystems. Ecologists analyze biological components and processes in the context of ecosystems including environmental factors, physical-chemical relationships, and social relationships. They use quantitative and systems analysis techniques to predict effects of planned or natural changes in ecosystems and to develop understanding of and solutions to ecological problems.

This series covers positions that require professional knowledge and competence in the science of fishery biology to perform work: (1) developing, conserving, managing, and administering fishery resources; and (2) evaluating the impact of construction projects and other socioeconomic activities that present potential or actual adverse effects on fishery resources and their habitat. The work also requires an ability to determine, establish, and apply biological facts, principles, methods, techniques, and procedures that are necessary for the production and/or management of aquatic resources in their natural habitat and/or within facilities and systems that have been constructed for their benefit and public use.

This series covers positions that require professional knowledge and competence in the science of wildlife biology to perform work involving: (1) the conservation, propagation, management, protection, and administration of wildlife species; or (2) the determination, establishment, and application of biological facts, principles, methods, techniques, and procedures necessary for the conservation and management of wildlife resources and habitats. The work requires professional knowledge of the distribution, habits, life histories, and classification of birds, mammals, and other forms of wildlife.

As the nation’s largest Federal provider of outdoor and water-based recreation, the U.S. Army Corps of Engineers’ more than 420 lake and river projects in 43 states provide more than 7,700 miles of land and water trail systems.   Park rangers protect the nation’s natural recreation facilities and its visitors.  Park Rangers provide support for the preservation of these natural resources by managing recreational grounds and educating visitors through environmental outreach programs.   Park Ranger employees ensure the safety and enjoyment of USACE recreation facilities for visitors of all ages and help local students and citizens learn about the natural and man-made resources they manage.

The U.S. Corps of Engineers is the nation’s largest provider of outdoor and water-based recreation and with more than 456 parks in 43 states.  Natural Resources Specialists develop and oversee activities designed to manage, conserve, protect and restore the nation’s land, water and wildlife resources.   Natural Resources Specialists manage environmental programs and projects consistent with ecosystem management principles.   Programs include management of fisheries, wildlife habitats, forestry, shoreline plans, reservoirs, and ensuring compliance and stewardship with environmental laws and regulations. 

Engineering technicians provide technical assistance and support for USACE civil, military, and environmental projects.   Engineering technicians review project plans and specifications, forecast resource requirements, provide technical advice to inspectors, and gather pertinent technical data towards the completion of projects.

As the oldest and largest construction agency, The U.S. Corps of Engineers has designed and developed key historical structures throughout the United States.  Major developments by USACE include the Washington Monument, The Lincoln and Jefferson Memorial, headquarters of The American Red Cross, the Pentagon, and many other building projects.  Architects oversee the design, development and review of drawings, manuals, and specifications for various worldwide facilities.  Architectural projects include housing facilities, dining facilities, child development centers, hospitals, safety and protection criteria, and historical preservation. 

Construction control technicians inspect and monitor construction operations for compliance of contracts, scheduling, and quality assurance.  These positions primarily review plans, materials and workmanship to ensure operations are executed in accordance with project specifications.  Construction control technicians work in an inspector and representative capacity. 

The U.S. Army Corps of Engineers is one of the world’s premier public engineering, design, and construction management agencies.  Civil engineers plan, design, construct, and maintain the nation’s water resources, Army installations, and numerous other Federal and local projects.  USACE civil engineering projects include the design and development of major highways, airfields, hospitals, laboratories, dams, levees, powerhouses, embankments, and various military installation facilities. 

Survey technicians perform surveys on the layout and inspection of operations for civil building projects, natural disasters, and hydrographic and land based projects.  Survey technicians collect field data to prepare navigational charts and sketch maps.  Survey data collected is instrumental in the design and construction of major highways, waterways, facilities, and economical structures.

As the nation’s environmental engineers, the U.S. Army Corps of Engineers manages one of the largest federal environmental missions: restoring degraded ecosystems, constructing sustainable facilities, regulating waterways, managing natural resources, and cleaning up contaminated sites from past military activities.  Environmental engineers conduct assessments of existing facilities and infrastructure, environment habitats, resources and natural water systems to develop ways of mitigating degradation to the environment.

Mechanical engineers design and construct mechanical systems utilized for major industrial, environmental, and architectural structures.  They restore the environment, repair and construct new machinery, pumping, piping, hydraulic systems, gas lines, heating, ventilation, and water treatment facilities.  USACE mechanical engineers also find new energy solutions for the future.

Electrical engineers design complex power systems utilized in major structures such as dams, signal circuits, electrical power installations, and power grids and systems.  They also design electrical systems for office building, dining facilities, maintenance shops, and hospitals. Electrical engineers seek out innovative electrical solutions for generations in the Army and the Nation.

Contract specialists play an integral role in the formulation, acquisition, and execution of high value contracts for U.S. Army Corps of Engineers projects.  Contract specialists serve as decision makers responsible for the proposal, negotiation, and awarding of contracts with government partners.

Realty specialists acquire, manage, and dispose of property relating to the U.S. Army Corps of Engineers and other Federal entities.  Realty specialists oversee and perform global property negotiations with landowners to acquire and upgrade facilities; advise on cost and asset information for projects; and ensure transactions are executed in accordance with real estate policies and procedures.  USACE realty programs include the Joint Facilities Recruiting Program, the Homeowners Assistance Program, BRAC acquisitions and disposal, and the Defense National Relocation Program.

The U.S. Corps of Engineers owns and operates more than 600 dams located throughout the United States.  Lock and Dam operators are responsible for the operation of navigation lock and dam equipment and machinery to allow river traffic to pass through the locks.  The work of lock and dam operators is essential in allowing water to pass between different levels of elevation between bodies of water, and in order to maintain pool levels.

Biologists conduct surveys, studies, and assessments of various natural habitats and water resources.  They ensure programs and environmental activities are in compliance with laws and regulatory programs, such as the Clean Water Act, the Rivers and Harbors Act, Marine Protection, Research and Sanctuaries Act, etc.  USACE Biologists throughout the United States conduct activities to preserve wildlife and aquatic habitats, monitor nuisance vegetation and invasive species, and act as environmental consultants.

This series covers positions that manage, supervise, lead, administer, develop, deliver, and support information technology (IT) systems and services throughout USACE. The Information Technology Management Mission is comprised of a wide range of duties to include threat reduction, vulnerability reduction, deterrence, international engagement, incident response, resiliency, and recovery activities, including computer network operations, information assurance, diplomacy, military, and intelligence missions as they relate to securing the global information and communication infrastructure.