Principal Engineer / Sr. Principal Engineer - Water/Wastewater
Company: Hazen and Sawyer
Location: Fairfax
Posted on: February 15, 2026
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Job Description:
Job Description Job Description Hazen is seeking a qualified and
experienced Principal Engineer/Sr. Principal Engineer for our
Fairfax, VA office. 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 Key
Responsibilities: Leading and delivering municipal water,
wastewater, and stormwater facilities planning and design projects.
Task responsibilities will include preparation of assessment and
design reports, performing design calculations, equipment
sizing/selection, preparation of construction documents, and
support of construction management/commissioning needs. Field work
and site visits from planning through construction and
commissioning will be required. Required Qualifications: 5-7 years
of water and wastewater conveyance and/or treatment design
experience is required. Bachelor's degree in civil, mechanical, or
environmental engineering is required. Preferred Qualifications:
Experience in project management for smaller projects is preferred.
Self-starter with attention to detail. PE License is required or
ability to obtain licensure within one year. 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
Keywords: Hazen and Sawyer, Sterling , Principal Engineer / Sr. Principal Engineer - Water/Wastewater, Engineering , Fairfax, Virginia
