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Senior Wastewater Project EngineerManager

Hazen And Sawyer


Job Location:

Seattle, WA - USA

Yearly Salary: $ 180000 - 220000
Posted: 2 July 2026 (30+ days ago)
Application Deadline: 29 September 2026
Vacancies: 1 Vacancy

Job Summary

Hazen and Sawyer is seekinga Senior Wastewater Project Engineer/Managerfor ourSeattleoffice. As part of our design and process teams you will be involved with a wide range of wastewater infrastructure projects. This will encompass all phases of design including conceptual/feasibility evaluations project management preparation of design reports permitting development of construction drawings and specifications and support of construction services.

Why Hazen and Sawyer:

  • Founded in 1951 by the son of Allen Hazen (developer of the Hazen-Williams equation) we are an employee-owned company with a singular focus on all things water.
  • Our work includes planning design and oversight of construction of environmental infrastructure for water wastewater and stormwater management.
  • We foster a work environment low on bureaucracy and high in creativity.
  • We recruit talented professionals provide them with challenging interesting and creative assignments and furnish them with the tools they need to succeed.
  • We currently have over 2000 employees in 70 offices throughout the United States Latin America Canada and the UK.

Key Responsibilities:

  • Hazen has outstanding opportunities for motivated talented people that enjoy teamwork and collaboration client service and solving our clients most difficult water challenges.
  • As a detail-oriented Senior Wastewater Engineer / Project Manager with a minimum of 15 years of experience in design and project management of municipal wastewater projects you will apply your unique skills and insights as part of teams providing wastewater treatment and overall nutrient management solutions across Washington State and the Pacific Northwest Region.
  • In your role you will evaluate model plan design and support startup and operation of public sector wastewater treatment facilities. Your expertise in and understanding of wastewater treatment processes will guide the design of these important facilities.
  • You will prepare facility assessment and design reports review and direct junior staff in performing design calculations process and/or hydraulic modeling selection and sizing of equipment preparing design documents and construction documents and supporting construction phase services both in office and in the field. Field work and site visits from planning through construction may require occasional travel.
  • You will support and mentor junior engineers and will be supported by senior mentors on projects and local and regional office leadership. You will also lead business development activities including preparation of proposals and presentations. You will work with local and regional staff to grow the wastewater practice in the Pacific Northwest.

Required Experience:

The desired candidate will have experience in:

  • Serving as Project Manager Design Manager and Project Engineer with full technical responsibility for planning coordination and execution of tasks for small and large projects
  • Multiple years following PE licensure of documented design experience for water/wastewater facilities projects
  • Planning design and construction of wastewater treatment infrastructure including developing technical treatment strategies selecting treatment processes developing process design criteria and delivering projects
  • Preparation of contract specifications and drawings
  • Development and review of technical reports proposals contract documents resources studies and data analysis
  • Office and field engineering support during construction

Position Requirements:

  • Bachelor of Science degree in Environmental Civil Chemical or Mechanical Engineering
  • A minimum of 15 years of experience
  • PE required with ability to obtain registration in other States
  • Possess strong verbal communication and technical writing skills
  • Effectively and proactively coordinate with various disciplines

What We Offer:

  • Comprehensive health benefits (medical dental vision and prescription plans)
  • Pre-tax flexible spending plans for medical dependent care and transportation
  • Short and long-term disability and employer paid life insurance
  • Paid holidays floating holidays and paid time off (PTO)
  • Employer-contributed 401(k) plan and additional financial planning support
  • Professional growth opportunities including tuition reimbursement in-house training and incentives for professional registration and professional organization memberships
  • Starting pay range for this position depends on skills experience education and geographical location



Required Experience:

Manager


About Company

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Hazen helps clients address water supply and water quality challenges with solutions tailored to deliver lasting benefits to the communities they serve.

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