Hydrologist Project Manager

Weston & Sampson Engineers Inc; Portsmouth (NH); On-site; USD 95,000 - 122,000; Full time

Benefits offered by this job

Meaningful work

Ownership

Growth opportunities

Flexible workplace

Strong culture

Job summary

Weston & Sampson Engineers Inc. seeks a Hydrologic & Hydraulic Project Manager with 5–10 years in our Water Discipline across New England offices.

The role centers on hydrologic/hydraulic modeling and design for stream restoration, flood mitigation, climate resilience, and coastal-to-inland infrastructure projects. You will direct client communications, lead cross-disciplinary teams, mentor staff, and support business development through proposals and outreach.

Qualifications

• BS in Civil Engineering, Environmental Engineering, Hydrology, or related field.
• MS in Civil Engineering, Environmental Engineering, Hydrology, or similar preferred.
• 5–10 years of experience in transportation or hydrology project management.
• Strong hydrology and hydraulics principles and infrastructure systems knowledge.
• Experience with floodplain analysis, stormwater design, and project permitting in the Northeast.
• Project management skills including scheduling, budgeting, and scope control.
• Business development and client management experience; CFM preferred.

Responsibilities

• Direct client communications on technical design, schedule, budget, and scope.
• Lead and coordinate project teams across multiple design disciplines.
• Develop and maintain long-term client relationships and pursue project opportunities.
• Support marketing, proposals, and client outreach activities.
• Mentor, supervise, and train junior engineers and designers.
• Lead design and delivery of transportation or hydrology projects with studies and modeling.

Skills

Hydrology principles

Hydraulics

Project management

Leadership

Client communications

Business development

Proposal preparation

CFM (certified)

Education

BS in Civil Engineering

MS in Civil Engineering / Hydrology

Tools

HEC-HMS

HydroCAD

HEC-RAS

PCSWMM

ICM

Job description

Weston & Sampson is currently seeking a Hydrologic & Hydraulic Project Manager with 5-10 years of experience in our Water Discipline out of any our New England-based office locations. The position will generally focus on projects that involve hydrologic and hydraulic modeling and design in support of a range of stream restoration, bank stabilization, dam rehabilitation, bridge and culvert replacement, climate resilience planning, and flood mitigation projects in complex environments and integrating coastal, riverine, and piped infrastructure flooding environments.

What You’ll Do:

• Direct client communications on technical design aspects, project schedule, budget, and scope.
• Lead and coordinate project teams across multiple design disciplines.
• Develop and maintain long-term relationships with clients, contributing to business development and project opportunities.
• Support business development efforts, including marketing, proposal preparation, and client outreach.
• Supervise, mentor, and train junior engineers and designers.
• Lead project teams in the design and delivery of transportation or hydrology projects, ensuring all aspects are met including studies, modeling, and final design.
• Typical projects include:
  • Hydrologic and hydraulic modeling for urban and rural infrastructure, including stormwater, drainage, and flood management.
  • Evaluating complex transportation networks and floodplain management in varied environments (e.g., urban, coastal, riverine).
  • Integrating climate resilience and sustainability planning into infrastructure projects.
  • Conducting site assessments, designing improvements, and leading technical studies to inform project development.

What You’ll Bring:

• BS in Civil Engineering, Environmental Engineering, Hydrology, or a related field (required).
• MS in Civil Engineering, Environmental Engineering, Hydrology, or similar field (preferred).
• 5-10 years of experience in transportation or hydrology project management.
• Strong understanding of hydrology and hydraulics principles and transportation infrastructure systems.
• Expertise in using hydrologic (e.g., HEC-HMS, HydroCAD), hydraulic (e.g., HEC-RAS), and integrated modeling software (e.g., PCSWMM, ICM).
• Experience with floodplain analysis, stormwater design, and transportation infrastructure evaluation.
• Experience with the permitting requirements of instream projects in multiple states in the Northeast.
• Project management experience, including scheduling, budgeting, and scope control.
• Strong experience in business development, proposal preparation, and client management.
• Certified Floodplain Manager (CFM) preferred.
• Proven leadership and team management skills.
• Excellent written and verbal communication, organizational, and time-management skills.
• Some travel to client meetings and project sites required.
• Valid driver’s license required.

Salary Range: $95,000 - $122,000 based on experience

Overview:

At Weston & Sampson, you’ll work alongside more than 1,000 employee-owners who are passionate about improving our communities. From providing clean water to designing resilient infrastructure and sustainable environments, our work has a direct impact on quality of life. We’re looking for curious, driven professionals who want to contribute to innovative, impactful projects and grow with a team that supports them.

We are a 100% employee‑owned, interdisciplinary firm offering design, engineering, and environmental services. Since our founding in 1899, we have worked to build a collaborative, forward‑thinking environment grounded in respectfor each other’s ideas.

We offer:

• Meaningful work:Contribute to projects that protect and enhance the natural and built environments
• Ownership mindset: As an employee-owner, your work directly contributes to our shared success
• Growth opportunities: Build your career through mentorship, diverse projects, and clear advancement pathways
• Flexible workplace: Work in a way that supports your life and not the other way around
• Strong culture: Join a team that values collaboration, inclusion, and recognition

Our Commitment to Inclusion, Diversity, Equity & Access (IDEA)

We believe diverse perspectives make us stronger. Weston & Sampson is committed to fostering a culture of belonging where all employees feel valued, respected, and empowered. We actively support IDEA principles across our organization and in our daily work.

Ready to transform your environment? Let’s work together.

A note to third-party recruiters: Weston & Sampson manages all recruiting directly. We do not accept unsolicited resumes without a signed agreement in place. Any unsolicited submissions will be considered property of Weston & Sampson, and we are not responsible for associated fees.

Equal employment opportunity, including veterans and individuals with disabilities.