Senior Water Project Engineer

Mott MacDonald; New Orleans (LA); Hybrid; USD 110,000 - 160,000; Full time

Job summary

Mott MacDonald in New Orleans, Louisiana, seeks a Senior Water Engineer to lead municipal water projects, including modeling and treatment plant design, with emphasis on client relationships.

You will mentor junior staff, serve as technical lead, and coordinate with utilities and regulators across the Gulf Coast.

Qualifications

• 10+ years of progressive municipal water engineering experience.
• Water treatment plant planning and design expertise.
• Proven Doer/Seller capability for business development.
• Experience mentoring engineers and leading technical teams.
• Strong written and verbal client-facing communication.
• Proficiency with WaterGEMS, WaterCAD, InfoWater and Excel tools.

Responsibilities

• Lead planning, design, and construction-phase services for municipal water infrastructure projects.
• Serve as technical lead and project manager on multi-disciplinary water projects of moderate to high complexity.
• Support business development through client relationship management, opportunity identification, and proposals.
• Perform hydraulic and water quality modeling for distribution systems and treatment processes.
• Lead the development and review of technical memoranda, reports, drawings, specifications, basis of design, and cost estimates.
• Provide technical oversight for process design including conventional and advanced water treatment technologies.
• Review engineering calculations and model results prepared by junior staff.
• Coordinate with internal disciplines, subconsultants, utilities, and regulatory agencies.
• Support field investigations, condition assessments, and data collection efforts.

Skills

WaterGEMS

WaterCAD

InfoWater

Excel

Education

B.S. in Civil/Environmental/Chemical Engineering

M.S. preferred

Professional Engineer (PE) license or ability to obtain Louisiana PE

Job description

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.

Mott MacDonald is seeking an accomplished Senior Water Engineer to join our established water sector team in New Orleans, Louisiana. This role is ideal for a senior technical professional who combines deep expertise in water modeling and treatment plant design with a strong ability to develop client relationships and win work.

You will play a key role in leading and delivering complex municipal water infrastructure projects while actively supporting business development, proposal leadership, and client engagement across the Gulf Coast and broader U.S. market. Projects will include water treatment plants, pumping and conveyance systems, hydraulic modeling, and resiliency-focused infrastructure.

Responsibilities will include:

• Leading and delivering planning, design, and construction-phase services for municipal water infrastructure projects, with emphasis on water distribution modeling and water treatment plant design
• Serving as a technical lead and project manager on multi-disciplinary water projects of moderate to high complexity
• Acting as a Doer/Seller, supporting business development through:
• Client relationship management
• Opportunity identification and pursuit strategy
• Proposal preparation and technical interviews
• Performing and overseeing hydraulic and water quality modeling for distribution systems and treatment processes
• Leading the development and review of:
• Technical memoranda and reports
• Design drawings and specifications
• Basis of design documents
• Engineer's opinions of probable construction cost
• Providing technical oversight for process design including conventional and advanced water treatment technologies
• Reviewing and approving engineering calculations and model results prepared by junior staff
• Coordinating with internal disciplines, subconsultants, utilities, and regulatory agencies
• Supporting construction administration activities including submittal review, RFIs, and field observations
• Mentoring and developing junior and mid-level engineers
• Supporting field investigations, condition assessments, and data collection efforts

We invite applications from candidates with the following experience:

• B.S. degree in Civil, Environmental, or Chemical Engineering (M.S. preferred)
• Licensed Professional Engineer (PE); ability to obtain Louisiana PE if not currently licensed
• 10+ years of progressive experience in municipal water engineering
• Demonstrated expertise in:
• Water treatment plant planning and design
• Strong experience delivering projects through planning, design, and construction
• Proven Doer/Seller capability with experience supporting or leading:
• Experience mentoring engineers and leading technical teams
• Strong written and verbal communication skills, including client-facing presentations
• Proficiency with industry-standard software such as:
• WaterGEMS, WaterCAD, InfoWater
• Excel-based engineering tools
• Knowledge of Gulf Coast or Southeast U.S. utility clients and regulatory environments is a plus

Benefits & Reward

At Mott MacDonald, o ur 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. W e 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.

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.