Water/Wastewater Project Manager

At Mott MacDonald, we trust our brilliant people to do brilliant things in engineering, management, and development services, supporting multisector project work in over 150 countries. As one of the largest employee-owned companies in the world, we pride ourselves on our ability to deliver exceptional outcomes through our network of 20,000+ talented consultants. With sustainability and innovation at the heart of all our sectors in North America, including, Buildings, Energy, Transportation, and Water. 

We believe in empowering our people to excel, learn, and grow, offering diverse opportunities to contribute to career-defining work. Join us and be part of a collaborative environment where your ambitions are united with ours, and you can truly shape your story. 

If you share that vision, even if you don’t meet every requirement listed, we’d still love to hear from you. We value potential and diverse perspectives as much as experience. Let’s explore how we can support your growth and help you take the next step in your career, while contributing to an exciting new chapter for Mott MacDonald in North America.

Our Philadelphia office is seeking a Project Manager with experience in water / wastewater design. Our Philadelphia office supports a broad spectrum of public and private clients. In this position, you will work alongside other professional engineers on water, wastewater, and/or green stormwater projects in the Pennsylvania, Maryland, Washington DC, and Virginia areas. We are looking for people who can function as role models and ambassadors for Mott MacDonald, articulating and representing the brand, vision, and value proposition internally and externally.

Role purpose:

This position will lead and manage a variety of our water, wastewater, and green stormwater infrastructure projects across the Mid-Atlantic region, supporting our expanding service offerings.

The primary purpose of this role is to provide project management and technical leadership, overseeing the development of design drawings and specifications, and ensuring successful project delivery from planning through construction.

This experienced position focuses on managing multidisciplinary teams, maintaining client relationships, and delivering high-quality, cost-effective solutions for complex infrastructure projects.

Our team supports some of the most ambitious infrastructure projects in North America, including:

• PWD Northern Liberties Flood Relief Project (NLFRP) – Multi-phase flood relief program for the Northern Liberties neighborhood, involving design and construction of ~5,000 feet of varied-size concrete box sewer (up to 11’x12’), equalization/junction chambers, and control structures to regulate dry and wet weather flows.


• PAWC Lake Scranton Transmission Main Rehabilitation - Evaluation and rehabilitation of a leaking 48-inch transmission main within a 4,300-foot mountain tunnel. Recommended and delivered sliplining with a 42-inch HDPE pipe, restoring reliable service, reducing operational risk, and minimizing community and environmental impacts

Responsibilities of the position will include but not be limited to the following:

• Manage and execute a combination of water, wastewater, and green stormwater infrastructure projects. Projects will include a variety of planning, design, and construction phase work


• Manage multidisciplinary design teams of planning and/or design engineering projects, supervising and coordinating several assignments simultaneously


• Establish and periodically review scope, schedule and budgets for projects and review progress against a baseline

We invite applications from candidates with the following experience:

• B.S. degree in civil, environmental, chemical, or mechanical engineering is required


• M.S. degree in civil or environmental engineering a plus


• 8+ years of progressive experience in water, wastewater, and/or stormwater-related projects


• PE or ability to obtain within one year in the Commonwealth of Pennsylvania is required


• A successful candidate will be a self-starter with ability to lead and manage people and projects


• Strong written and verbal communications skills with demonstrated ability to conduct effective presentations and prepare written reports and documents


• Strong technical skills and technical leadership experience, preferably in water or wastewater linear infrastructure, AutoCAD Civil3D, and green stormwater design


• At least one year managing projects, including management of project budgets, schedules, staff, and client interface

Benefits & Reward

At Mott MacDonald, our employees have a stake and a voice in our business, providing them with a direct connection to our success through our personal and group performance bonuses. We provide a comprehensive benefit package that includes 401k, medical, dental and vision insurance, short-term/long-term disability, paid holidays, PTO, parental leave, and company paid life insurance.

Individual pay is determined based on several factors such as work location, education, experience, and unique skills.

Collaboration at Our Core
At Mott MacDonald, we believe great ideas happen when we’re together. Our hybrid approach centers on an in-office culture, with most of your time spent collaborating face-to-face and a minimum of three days per week in the office. We balance flexibility with connection, so you and your manager can choose how to meet client, team, and personal commitments.

Equal opportunity is the law. 

We seek to promote fair employment procedures and practices to ensure equal opportunities for all. We encourage individual expression in our workplace and are committed to creating an inclusive environment where everyone feels they have the opportunity to contribute.

• English version


• Spanish version


• Chinese version

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, creed, marital status, sexual orientation, gender identity, citizenship status or disability status.