Senior Water/Wastewater Engineer

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 work to weave diversity, equity, and inclusion into our work and foster a sense of belonging throughout the company and within our communities, we constantly ask ourselves: What is our impact on the world?

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Each and every role throughout our organization makes a difference in our ability to change the world for the better. Read further to learn how you could help make great things possible not only in your community, but around the world.

As part of HDR's Washington Water Business Group, our Wastewater team fills a vital role supporting projects across HDR's Water business group. The team supports the planning, design, and delivery of water/wastewater treatment and associated municipal projects. As a senior water/wastewater engineer in our group, you will play an integral part on various multidisciplinary teams to support highly visible, impactful public infrastructure projects across the region and country.

Our employee-owned culture creates a workplace atmosphere of collaboration, learning, enrichment, and inclusion. Collaboration is a cornerstone of our design delivery approach. In this role, you will work closely with other team members to prepare calculations, writing specifications, reports, and construction documents, determine appropriate design methods, engineering design, and project closeout. You will be supported by senior engineers and/or project managers who will provide guidance and mentorship throughout the project lifecycle. Having the ability to function effectively in a variety of roles on integrated project teams is key for this role. Candidates with strong self-motivation and the ability to work independently will excel in this role.

We are committed to promoting employees' physical and mental wellness and well-being and delivering meaningful employee experiences. Whether you are interested in advancing your technical skillset, learning more aboutbusiness development, or are eager to step into a project management role, we provide endless growth and training opportunities that match your skillset and interest.

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

• Direct and coordinate work of single or multidiscipline teams throughout the project's lifecycle (from development & initiation to close-out)
• Be responsible for all aspects of large multidiscipline projects or medium-sized projects with high degree of technical complexity, involving a large project staff
• Produce and coordinate several projects concurrently
• Establish and maintain client relations, and be involved with marketing, contractual, design and production meetings
• Conduct work sessions for deliverable development in conjunction with other staff and stakeholders
• Coordinate staffing and workload through entire project life cycle, and ensure completion of deliverables on schedule
• Track financial aspects of projects, and coordinate and adjust work effort with team to ensure that work is completed within parameters of agreed-to budget and schedule
• Work with the Accounting, Operational and Business leadership for periodic project reviews
• Implement QA/QC procedures
• Supervise large project staffs and act as mentor for less-experienced Project Managers
• Independently create detailed designs, plans, specifications and estimates for pipelines, pump stations, treatment plants, tanks and other wastewater infrastructure.
• 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
• Lead planning, evaluation, and design of wastewater treatment process projects, acting as design or technical lead.
• Oversee delivery of projects from start to finish including stewarding quality throughout project.
• Provide oversight and mentoring for junior staff
• Appropriately plan work and communicate with project resources and teams.
• Maintain client relationships through project work.
• Establish quality standards and value engineering solutions
• Conduct quality control reviews of designs
• Serve as a technical expert with recognized authority in area of wastewater systems
• Serve as a project manager on water/wastewater projects as needed
• Perform other duties as needed

Preferred Qualifications

• Master's degree in Civil Engineering or equivalent field
• PMP certification
• Strong technical background and experience in wastewater treatment processes and project delivery
• Project Engineering and Project Management experience

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
• Professional Engineer (PE) 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. We provide a comprehensive benefits package that promotes employee ownership, employee health, performance, and success, which includes medical, dental, vision, short and long-term disability, life insurance, an employee assistance program, paid time away, parental leave, paid holidays, a retirement savings plan with employer match, employee referral bonus and tuition reimbursement. The expected compensation range for this position depends upon skills, experience, education and geographical location. (Stated benefits are for full-time regular positions. Temporary and part-time roles eligible for limited benefits.) {Spokane, WA}: $109,858 - $156,940 {Olympia, WA}: $115,640 - $165,200 {Gig Harbor, WA}: $127,204 - 181,720 {Bellevue, WA / Seattle, WA / Everett, WA}: $138,768-198,240 Primary Location: United States-Washington-Spokane Other Locations: United States-Washington-Everett, United States-Washington-Olympia, United States-Washington-Seattle, United States-Washington-Bellevue, United States-Washington-Gig Harbor Industry: Water Schedule: Full-time Employee Status: Regular BusinessClass: WW Treatment and Effluent Mgmt Job Posting: Dec 3, 2025