Designs, or provides technical expertise to contractors and developers building or maintaining, water mains, water booster pumping facilities, sanitary sewers, sewage pump stations, pressure regulating facilities, highways, bridges, drainage systems, and other Engineering and Department of Water Resources or Public Works projects; conducts field survey, hydraulic studies, and/or other Engineering studies to accurately design projects. Plans, designs, inspects, permits, and directs construction and maintenance of structures and facilities such as roads, bridges, traffic control systems, pipelines, irrigation systems, water and sewer systems, water and wastewater treatment facilities, compactor facilities, and landfills, and performs technical research to develop solutions to engineering problems.