The Commission is seeking a water resource professional with a background in engineering and/or science to work in its Science and Water Quality Management branch. With technical guidance and training, the successful candidate will perform the following activities: Develop, maintain and apply water quality and hydrodynamic models, including one-, two- and three-dimensional models for conventional and toxic pollutants, of the tidal and non-tidal waters of the Delaware River Basin; Plan and conduct field investigations such as water quality monitoring studies in support of model development and calibration; Support planning and regulatory activities of the Commission that require models; Compile, maintain and analyze databases on conventional and to