Boston, Massachusetts, United States / Westwood, Massachusetts, United States / Buffalo, New York, United States / Freehold, New Jersey, United States / Iselin, New Jersey, United States / Morristown, New Jersey, United States / New York, New York, United States / Philadelphia, Pennsylvania, United States / Pittsburgh, Pennsylvania, United States. The Principal Wastewater Engineer will also help expand the team's ability to deliver complex wastewater projects, develop future technical and project leaders, and enhance the organization's reputation across the New York, New Jersey, Pennsylvania and Massachusetts wastewater market.