Senior Wastewater Engineer

HDR; St. Louis (MO); On-site; USD 110,000 - 150,000; Full time

Job summary

HDR is seeking a Senior Wastewater Engineer in the United States to lead design and project management for municipal water and wastewater systems. You will develop pipelines, treatment facilities and storage concepts while coordinating with owners and stakeholders.

The ideal candidate holds a Bachelors in Civil Engineering (Masters preferred), a PE license, and at least 10 years of relevant experience, with proficiency in AutoCAD, MicroStation and hydraulic modeling software.

Qualifications

• Bachelor's degree in Civil Engineering or equivalent field.
• Minimum 10 years experience with Municipal Water and Wastewater Systems Planning and Design.
• Professional Engineer license recognized by the licensing board for the location of the position offered (PE).
• Strong technical background and experience in designing water distribution systems.

Responsibilities

• Independently create detailed designs, plans, specs and estimates for pipelines, pump stations, treatment plants, tanks and other water/wastewater systems.
• Coordinate engineering/process design, write specifications, plan work, and select equipment with owners.
• Establish new quality standards and value engineering solutions.
• Conduct quality control reviews of completed designs.
• Serve as a technical expert in water and wastewater systems.
• Serve as a project manager on water/wastewater projects as needed.
• Perform other duties as needed.

Skills

PE license

Project management

Water/wastewater design

Education

Bachelor's degree in Civil Engineering

Master’s degree in engineering

Tools

AutoCAD

MicroStation

Hydraulic modeling software

Job description

At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. As we foster a culture of inclusion throughout our company and within our communities, we constantly ask ourselves: What is our impact on the world? Read more to learn how you could help make great things possible not only in your community, but around the world.

We believe water is more than a resource, it's a shared responsibility. As part of our Water Business Group, you’ll help shape how communities manage water for generations to come. From delivering safe drinking water and treating wastewater responsibly to developing sustainable water supplies and protecting lives and property through flood control, your work will directly support public health, environmental sustainability, and infrastructure resilience. We bring together experts across disciplines to solve complex challenges with bold thinking and technical excellence. Whether you\'re modernizing aging systems or pioneering innovative approaches, your contributions will make a meaningful difference in people’s lives. This isn’t just a job, it\'s a chance to lead change, drive progress, and leave a lasting legacy.

In the role of Senior Wastewater Engineer, we\'ll count on you to:

• Independently create detailed designs, plans, specifications and estimates for pipelines, pump stations, treatment plants, tanks and other water and wastewater storage and conveyance systems
• Take responsibility for engineering/process design, project coordination, determining and writing engineering specifications, planning work, establishing appropriate design methods, report preparation and coordination, equipment sizing and selection, and working directly with the owner
• Establish new quality standards and value engineering solutions
• Conduct quality control reviews of completed designs
• Serve as a technical expert with recognized authority in area of water and wastewater systems
• Serve as a project manager on water/wastewater projects as needed
• Perform other duties as needed

Preferred Qualifications

• Master’s degree in engineering or related field

Required Qualifications

• Bachelor\'s degree in Civil Engineering or equivalent field
• A minimum of 10 years experience with Municipal Water and Wastewater Systems Planning and Design
• Requires professional engineering license recognized by the licensing board for the location of the position offered. Example: Professional Engineer (PE or P.Eng) license.
• Strong technical background and experience in designing water distribution systems
• Microsoft Office, AutoCAD, MicroStation and hydraulic modeling software
• Project Engineering and Project Management experience is necessary
• An attitude and commitment to being an active participant of our employee-owned culture is a must

What We Believe

HDR is our company. Together, we build on each other\'s life experiences and perspectives to make great things possible every day. This shapes our collaborative culture, encourages organizational trust and connects us closer to the clients and communities we serve.

Our Commitment

As employee owners, we all have a role in creating an inclusive environment where each of us is welcomed, valued, respected and empowered to bring our authentic selves to work every day.

Our eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ+, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. Each group has an executive sponsor and is open to all employees.

Primary Location: United States-Missouri-Kansas City Other Locations: United States-Missouri-St Louis, United States-Missouri-Columbia, United States-Kansas-Wichita, United States-Missouri-Forsyth, United States-Missouri-Springfield Industry: Water Schedule: Full-time Employee Status: Regular BusinessClass: WW Treatment and Effluent Mgmt Job Posting: Jul 22, 2026

At HDR, we are committed to the principles of employment equity. We are an Affirmative Action and Equal Opportunity Employer (https://www.hdrinc.com/equal-employment-opportunity-employer). We consider all qualified applicants, regardless of criminal histories, arrest and conviction records.