Hydrologist Project Manager

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

Job summary

Weston & Sampson seeks a senior civil/environmental engineer to lead transportation or hydrology projects in the Northeast. You will direct design teams, manage scope, schedule and budget, and communicate with clients to advance opportunities.

The role emphasizes hydrology and hydraulics modeling (HEC-HMS, HydroCAD, HEC-RAS, PCSWMM/ICM), floodplain analysis, stormwater design, and transportation feasibility. Strong leadership, proposal development, and client management are essential.

Qualifications

• BS in Civil Engineering, Environmental Engineering, Hydrology, or 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.
• 2+ years of experience managing hydrology-related projects.
• Strong understanding of hydrology and hydraulics principles and transportation infrastructure systems.
• 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.
• CFM certification 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.

Responsibilities

• Direct client communications on 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, including studies, modeling, and final design.
• Typical projects include hydrologic/hydraulic modeling for stormwater, drainage, and flood management; transportation networks and floodplain management; climate resilience integration.
• Conduct site assessments, design improvements, and lead technical studies to inform project development.

Skills

Hydrology

Hydraulic modeling

Project management

Client management

Proposal development

Leadership

Communication

Education

BS in Civil Engineering

MS in Civil/Environmental Engineering

Tools

HEC-HMS

HydroCAD

HEC-RAS

PCSWMM

ICM

Job description

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.
• 2+ years of experience managing hydrology-related projects.
• 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.