Senior Water​/Wastewater Engineer

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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.

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At HDR, we are committed to the principles of employment equity. We are an affirmative action and equal opportunity employer. We consider all qualified applicants, regardless of criminal histories, arrest and conviction records.

• Direct and coordinate work of single or multi-discipline teams throughout the project’s lifecycle (from development & initiation to close-out)
• Be responsible for all aspects of large multi-discipline 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

• 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

• 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, Micro Station 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

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.

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.

United States-Washington-Spokane

United States-Washington-Everett, United States-Washington-Olympia, United States-Washington-Seattle, United States-Washington-Bellevue, United States-Washington-Gig Harbor

Water

Full-time

Regular

WW Treatment and Effluent Mgmt

Dec 3, 2025

Compensation ranges by location:
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