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Wastewater Project Engineer (Mid-Level)

Hazen and Sawyer
Manchester, NH Full Time
POSTED ON 6/24/2026
AVAILABLE BEFORE 12/19/2026
Hazen and Sawyer is seeking an experienced Wastewater Project Engineer for our Manchester, NH office. As part of our wastewater team, this position will be involved with a wide variety of wastewater infrastructure projects, focusing on treatment process design and construction.

Hazen is a stable, growing, employee-owned company where engineers and scientists are valued, We are committed to making the world better place by providing technically superior solutions to our clients for all things water.

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 2,000 employees in 70 offices throughout the United States, Latin America, Canada, and the UK.
  • A flexible hybrid work schedule supports today's busy professionals.

Work Setting

  • Hybrid (remote and office)

Key Responsibilities

  • Support the development of technical treatment strategies, selection of treatment processes, developing process design criteria, and delivering projects
  • Assist with client coordination and collaboration
  • Work on interdisciplinary teams to effectively meet the client’s needs
  • Coordinate with internal technical specialists in all practice areas and discipline design professionals for project delivery
  • Support preparation of proposals and presentations
  • Participate in fieldwork and perform site visits from planning through construction that may be required, with occasional travel if needed

Required Qualifications

  • Bachelor's degree in environmental, civil, or mechanical engineering
  • PE license
  • 5-10 years of experience in the field of wastewater-related infrastructure, including project engineering/management (planning, design, and construction)
  • Proficient in all MS Office based computer software
  • Experience in successfully delivering support to projects spanning multiple years, on collaborative, multi-disciplinary teams
  • Excellent communication and interpersonal skills, and capable of interacting effectively with staff, clients, and regulatory agencies
  • Self-starter with attention to detail
  • Strong organizational skills
  • Must be capable of presenting complex issues to nontechnical people

Preferred Qualifications

  • Advanced degree (Master’s or Doctorate) in Civil/Environmental Engineering

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

Salary.com Estimation for Wastewater Project Engineer (Mid-Level) in Manchester, NH
$96,673 to $121,006
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