Under light supervision, creates basic to moderate complexity water and waste water treatment facilities, water and sewer systems, pipelines, pump stations, remediation sites, solid waste facilities, etc. engineering designs to meet client project requirements. Reviews draft designs and reports for compliance with federal, state and local regulations. Ensures that firm policies and practices are followed on all designs. Performs site reviews and studies, as needed, to ensure designs are aligned with location specifications. Updates design requirements as necessary. Performs water quality analyses and modeling. Contributes to firm's TKM by developing white papers and technical design documentation of new or special case designs, studies, etc. Submits technical papers and designs for publishing to technical journals. Attends conferences, symposia, etc. to improve the visibility of the firm's products and services in collaboration with applicable sales staff. Performs other duties as required. Provides technical guidance and training to more junior staff. Reviews the work of more junior staff.