The typical hierarchy for environmental work is technician (two years of postsecondary education or less), technologist (two years or more of postsecondary training), technician manager (perhaps a technician or technologist with many years of experience), and scientist or engineer (four-year bachelor of science degree or more, up to Ph.D. level).
In some private manufacturing or consulting firms, technician positions are used for training newly recruited professional staff. In such cases, workers with four-year degrees in engineering or physical science are likely to be promoted before those with two-year degrees. Employees of government agencies usually are organized under civil service systems that specify experience, education, and other criteria for advancement. Private industry promotions are structured differently and will depend on a variety of factors.
- Agricultural Scientists
- Air Quality Engineers
- Aquarists
- Arborists
- Astrogeologists
- Biochemists
- Bioenergy/Biofuels Workers
- Biofuels Processing Technicians
- Biofuels Production Managers
- Biofuels/Biodiesel Technology and Product Development Managers
- Biologists
- Biomass Plant Technicians
- Biomass Power Plant Managers
- Botanists
- Brownfield Redevelopment Specialists and Site Managers
- Business Managers
- Cartographers
- Chemists
- Chief Sustainability Officers
- Civil Engineers
- Climate Scientists
- Corporate Climate Strategists
- Ecologists
- Energy Brokers
- Energy Conservation Technicians
- Energy Consultants
- Engineering Technicians
- Environmental Consultants
- Environmental Economists
- Environmental Education Program Directors
- Environmental Engineers
- Environmental Lawyers
- Environmental Lobbyists
- Environmental Planners
- Environmental Restoration Planners
- Environmental Scientists
- EPA Special Agents
- Fish and Game Wardens
- Forensic Meteorologists
- Foresters
- Forestry Technicians
- Fuel Cell Engineers
- Fuel Cell Technicians
- Fuel Cell Technology Workers
- Futurists
- Geodetic Surveyors
- Geographers
- Geographic Information Systems Specialists
- Geological Technicians
- Geologists
- Geophysicists
- Geospatial Analytics Specialists
- Geotechnical Engineers
- Geothermal Energy Industry Workers
- Geothermal Production Managers
- Geothermal Technicians
- Green Builders
- Green Hotel/Resort Ecomanagers
- Green Products Manufacturers
- Green Transportation Careers
- Groundwater Professionals
- Hazardous Waste Management Specialists
- Hazardous Waste Management Technicians
- Horticultural Inspectors
- Horticultural Technicians
- Hydroelectric Plant Technicians
- Hydroelectric Production Managers
- Hydropower and Marine Energy Industry Workers
- Indoor Environmental Health Specialists
- Industrial Ecologists
- Land Acquisition Professionals
- Land Trust or Preserve Managers
- Landscape Architects
- Marine Biologists
- Meteorologists
- Methane/Landfill Gas Collection System Operators
- Methane/Landfill Gas Generation System Technicians
- Microbiologists
- Molecular and Cellular Biologists
- National Park Service Employees
- Naturalists
- Oceanographers
- Paleontologists
- Park Rangers
- Range Managers
- Recycling and Reclamation Workers
- Recycling Coordinators
- Refuse Collectors
- Remote Sensing Scientists and Technologists
- Remote Sensing Technicians
- Renewable Energy Careers
- Renewable Energy Engineers
- Renewable Energy Site Assessors
- Rewilders
- Soil Conservationists and Technicians
- Soil Scientists
- Solar Energy Industry Workers
- Solar Energy Installation Managers
- Solar Energy Sales Representatives
- Solar Engineers
- Solar Thermal Installers and Technicians
- Space Meteorologist
- Surveying and Mapping Technicians
- Surveyors
- Wastewater Treatment Plant Operators and Technicians
- Water/Wastewater Engineers
- Wind Energy Engineers
- Wind Energy Industry Workers
- Wind Energy Operations Managers
- Wind Energy Project Managers
- Zoo and Aquarium Curators and Directors
- Zoologists