Principal Project Manager - Water​/Wastewater

At Mott Mac Donald, we are driven by purpose and powered by brilliant people. As a trusted engineering, management, and development consultancy, we work with clients to solve complex challenges and deliver sustainable outcomes that make a meaningful difference for the communities we serve.

When you join us as an experienced professional, you will bring your expertise to work that matters while continuing to grow your career. You will collaborate with talented colleagues across disciplines and geographies, contribute your perspective, and help shape better outcomes through technical excellence, innovation, and integrity.

Build on your experience while helping shape what comes next. At Mott Mac Donald, you'll work alongside talented people on complex and rewarding projects that make a real difference. We value fresh perspectives, encourage collaboration, and provide opportunities to expand your skills, take on new challenges, and grow your career. Whether you're deepening your technical expertise, broadening your leadership experience, or exploring new opportunities across our business, you'll be supported by a team that is committed to helping you succeed.

Our Boston office is currently looking to add a Principal Project Manager with experience in developing and implementing a variety of water/wastewater projects. You will be tasked with developing, executing, and managing water/wastewater infrastructure projects.

We're looking for people who can function as role models and ambassadors for Mott Mac Donald, articulating and representing the brand, vision, and value proposition internally and externally. Our Boston office supports a broad spectrum of public and private clients. This position may require temporary placement within the client’s offices to support management and implementation of their projects.

• Manage and execute work on wastewater, stormwater, and water utilities planning, design, and construction projects. Projects may include water distribution and treatment, wastewater collection and treatment, pipeline and pump station rehabilitation, and stormwater.
• Serve as a trusted advisor and senior client representative, developing and maintaining long‑term relationships with key public and private sector clients.
• Lead large and complex water, wastewater, and capital improvement programs from planning through design, procurement, construction, commissioning, and closeout.
• Lead project teams in planning and/or designing engineering projects, supervising and coordinating several assignments simultaneously.
• Establish and periodically review project scope, schedule, budget, staffing plans, and overall project performance.
• Accountable for project financial performance, including profitability, forecasting, resource planning, contract management, and risk management.
• Apply diversified knowledge of engineering/scientific principles/practices in broad areas of assignments and related fields.
• Lead strategic pursuits, proposal development, interviews, and capture planning activities to secure new work and expand relationships with existing clients.
• Mentor, develop, and provide leadership to project managers, engineers, and technical staff to support project delivery excellence and long‑term team growth.
• Analysis of Capital Improvement Plans (CIP) regarding potential projects for further investigation.

We invite applications from candidates with the following experience:

• B.S. degree in civil, environmental, or mechanical engineering is required.
• Professional Engineer (PE) license in Massachusetts, or the ability to obtain licensure through comity within six months, is required.
• 15+ years of progressively responsible experience planning, designing, and delivering water, wastewater, stormwater, and capital improvement programs.
• Demonstrated experience managing large, complex municipal water and wastewater infrastructure projects throughout the project lifecycle.
• Demonstrated success managing project financial performance, including profitability, resource planning, contract management, forecasting, and risk management.
• Proven ability to develop and maintain strong client relationships and serve as a trusted advisor to public and private sector clients.
• Experience leading multidisciplinary teams and mentoring project managers, engineers, and technical professionals.
• Strong understanding of project delivery, commercial management, contract…