New England Real Estate Journal

Partner Engineering and Science hires Casey as senior project manager

September 25, 2026 - Movers & Milestones
Mark Casey

Boston, MA Partner Engineering and Science, Inc. has added Mark Casey, PE, to its environmental solutions practice. Casey will serve as senior project manager in Partner’s local office, bringing 38 years of environmental consulting experience and deep knowledge of the New England market to the firm’s growing team.

Throughout his career, Casey has supported clients across New England with environmental assessment, investigation, remediation, and regulatory compliance needs. His extensive regional experience has provided him with an in-depth understanding of local environmental regulations, regulatory agencies, key market participants, and the unique soil and groundwater conditions that influence environmental projects throughout the region.

“Mark’s 38 years of experience in New England represent an incredible asset for Partner and, most importantly, for our clients,” said Tiffany-Linn Stephens, regional director of Partner’s environmental solutions in the northeast. “His deep familiarity with the region’s regulatory landscape, environmental conditions, and the practical challenges associated with managing complex environmental projects will allow him to provide thoughtful, efficient solutions. Having someone with this level of local knowledge and technical experience strengthens our ability to help clients successfully navigate their environmental risks and opportunities.”

As a Massachusetts Professional Engineer and Massachusetts Licensed Site Professional, Casey brings a strong combination of technical expertise and regulatory insight into Partner’s Environmental Solutions practice. His experience in the New England environmental market will complement Partner’s broader network of multidisciplinary experts and enhance the firm’s ability to deliver integrated solutions for clients throughout the property life cycle.

“I saw Partner as a strong fit because of the alignment between my experience and credentials and the work the firm is doing,” said Casey. “I’m excited to be joining a team with such a deep bench of technical expertise, and I’m particularly looking forward to collaborating with the talented group of professionals in the Framingham office.”

Casey earned his degree from the University of Massachusetts Lowell and holds Massachusetts Professional Engineer and Massachusetts Licensed Site Professional credentials.