Stormwater Project Manager

Mott MacDonald
life insurance, vision insurance, parental leave, paid holidays, 401(k)
United States, Pennsylvania, Philadelphia
Dec 20, 2025
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 treatment 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. We are seeking an experienced Project Manager to lead green stormwater infrastructure (GSI) projects for public and private clients local to Philadelphia and across the Mid-Atlantic region. This role combines technical leadership with project management, ensuring successful delivery from planning through construction. Key Responsibilities Manage and execute projects involving green stormwater infrastructure with elements of water and wastewater including planning, design, and construction phases Lead multidisciplinary design teams, coordinating multiple assignments simultaneously Develop and review project scope, schedules, and budgets; monitor progress against baselines Provide technical leadership in GSI design (e.g., bioretention, bioswales, permeable pavements, tree trenches) and stormwater management strategies Maintain strong client relationships and represent the company in stakeholder meetings and public outreach Ensure compliance with regional regulations, including MS4 permitting, stormwater ordinances, and climate resilience standards Candidate Specifications Education: B.S. in Civil or Environmental Engineering (M.S. preferred) Experience: 8+ years in water, wastewater, and/or stormwater projects, with demonstrated GSI expertise Licensure: Professional Engineer (PE) in Pennsylvania or ability to obtain within one year Proven ability to manage projects, including budgets, schedules, staff, and client interface Strong technical skills in AutoCAD Civil3D, GIS tools, and stormwater modeling Excellent written and verbal communication skills; ability to prepare reports and deliver presentations Familiarity with green infrastructure best practices, climate adaptation strategies, and regulatory compliance Preferred Skills Knowledge of MS4 compliance, Atlas 14 rainfall data, and emerging stormwater regulations PMP certification or equivalent project management training 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. Englishversion Spanishversion Chineseversion 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.