4 senior water resources engineer jobs found

Otak is seeking a Senior Water Resources Engineer to provide technical leadership on complex water resources projects, including stream and river restoration initiatives that enhance watershed health and community resilience. Located in either our Portland, OR, or Vancouver, WA office, this role will lead the planning, design, and delivery of hydraulic engineering, restoration, stormwater, and fish passage projects across Oregon and Washington. As part of Otak's interdisciplinary Water and Natural Resources team, you will help develop practical, science-based solutions that improve infrastructure performance, stabilize waterways, reduce environmental impacts, and support healthy aquatic ecosystems. How You'll Contribute: Provide technical excellence and thought leadership in the areas of river/stream restoration, fish passage design, bridge hydraulics and scour countermeasure design. Perform hydrologic and hydraulic modeling. Conduct design calculations. Prepare...

Wish your job made a difference? Our mission is protecting the world's water. We work every day to support the sustainability of our most precious resource, so our people know what they're doing matters. Join our team and do work that matters. Visit to learn more or check out the official job description (below). Company Description: Orenco Systems, Inc. (subsidiary of Infiltrator Water Technologies) is a manufacturer of innovative onsite and decentralized wastewater collection and treatment technologies. Solutions include community collection systems, advanced secondary treatment systems, watertight fiberglass tanks, and in-tank pumping and filtration systems. Orenco also manufactures high-quality standard, custom, and OEM controls, along with state-of-the-art fiberglass buildings, tanks, and enclosures. Infiltrator Water Technologies is a market leader within the onsite wastewater treatment industry, Infiltrator manufactures a variety of revolutionary products and...

Wish your job made a difference? Our mission is protecting the world's water. We work every day to support the sustainability of our most precious resource, so our people know what they're doing matters. Join our team and do work that matters. Visit to learn more or check out the official job description (below). Company Description: Orenco Systems, Inc. (subsidiary of Infiltrator Water Technologies) is a manufacturer of innovative onsite and decentralized wastewater collection and treatment technologies. Solutions include community collection systems, advanced secondary treatment systems, watertight fiberglass tanks, and in-tank pumping and filtration systems. Orenco also manufactures high-quality standard, custom, and OEM controls, along with state-of-the-art fiberglass buildings, tanks, and enclosures. Infiltrator Water Technologies is a market leader within the onsite wastewater treatment industry, Infiltrator manufactures a variety of revolutionary products and...

Salary: $44.52 - $59.36 Hourly Location : City of Corvallis, OR Job Type: Full time regular employee Job Number: 01488 Department: Public Works Department Opening Date: 07/22/2026 Closing Date: 9/2/2026 8:00 AM Pacific Position Summary Responsibilities include serving as a project lead for other engineers and technicians, managing capital improvement and operating projects, reviewing land use applications and private development plans for public improvements, administering City and outside agency contracts and managing project budgets. These tasks are illustrative only and may include other related duties. The Civil Engineer II is distinguished from the Civil Engineer I by having responsibility for management of capital projects as the licensed engineer of record; reviewing more complex land use and PIPC applications; carrying out assignments with greater scope of responsibility and financial authority; managing multiple projects that may involve complex public...