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Job Title: Hydraulic Modeler – Water Resources

Job Description

This role focuses on hydrologic and hydraulic modeling to support stormwater, drainage, floodplain, and watershed analyses for infrastructure, transportation, and water resources projects. You will develop and run models using leading industry tools, analyze system performance under various scenarios, and prepare technical documentation that supports design decisions and regulatory submissions. The position offers a hybrid work arrangement within a large, well-established organization in the water resources space, with strong long‑term benefits once you transition to permanent status.

Responsibilities

• Perform hydrologic and hydraulic modeling to support stormwater, drainage, floodplain, and watershed analyses.
• Develop, calibrate, and run models using tools such as HEC‑HMS, HEC‑RAS (1D/2D), SWMM, or InfoWorks ICM to evaluate system behavior.
• Analyze rainfall–runoff relationships, hydraulic capacity, flood impacts, and overall system performance under a variety of design and regulatory scenarios.
• Prepare clear and accurate technical calculations, figures, exhibits, and written reports to support engineering design packages and regulatory submissions.
• Support planning, design, and permitting efforts for infrastructure, transportation, and water resources projects by providing modeling insights and recommendations.
• Coordinate closely with engineers, planners, and multidisciplinary project teams to integrate modeling results into practical and constructible designs.
• Assist with coordination and communication with local, state, and federal agencies, including responding to technical comments and information requests.
• Maintain organized model files, input data, and documentation in accordance with project requirements and QA/QC standards.
• Use AutoCAD Civil 3D and related civil design tools to support drainage, paving, grading, and stormwater design as needed.
• Apply knowledge of water regulations and standards to ensure modeling and design work aligns with applicable guidelines and permitting requirements.

Essential Skills

• 4+ years of experience performing hydrologic and hydraulic modeling for drainage, stormwater, floodplain, or watershed studies.
• BS degree in Civil Engineering, Environmental Engineering, or a closely related science discipline.
• Proficiency with industry-standard modeling tools such as HEC‑HMS, HEC‑RAS (1D/2D), SWMM, InfoWorks ICM, or similar software.
• Strong ability to analyze rainfall/runoff, flood impacts, and hydraulic capacity and translate findings into actionable technical calculations and reports.
• Experience supporting stormwater, drainage, and water resources design through modeling and analysis.
• Working knowledge of local, state, and federal water regulations relevant to stormwater, drainage, and floodplain management.
• Ability to collaborate effectively with engineers, planners, and agency stakeholders and to communicate technical information clearly.
• Proficiency with AutoCAD Civil 3D for civil design, including drainage, paving, and grading.
• Professional Engineer (PE) license.
• Solid understanding of hydrology, hydraulics, and civil design principles as they apply to water resources projects.

Additional Skills & Qualifications

• Experience with InfoWorks ICM or similar advanced hydraulic modeling platforms.
• Experience using ArcGIS or similar GIS tools to support watershed and floodplain analyses.
• Engineering Intern (EIT) certification or similar professional credential.
• Interest in building a long-term career within a large, well-known organization in the water resources sector.

Work Environment

This position is based in a hybrid work environment. You will work within a large organization of more than 20,000 people that is well recognized in the water resources space, offering exposure to complex infrastructure and transportation projects and collaboration with multidisciplinary teams. The role involves extensive use of modeling software such as HEC‑HMS, HEC‑RAS, SWMM, InfoWorks ICM, and design tools like AutoCAD Civil 3D, along with GIS platforms such as ArcGIS.

This is a Contract to Hire position based out of Arlington, VA.

The pay range for this position is $35.00 - $55.00/hr.

Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

Eligibility requirements apply to some benefits and may depend on your job classification and length of employment. Benefits are subject to change and may be subject to specific elections, plan, or program terms. If eligible, the benefits available for this temporary role may include the following: • Medical, dental & vision • Critical Illness, Accident, and Hospital • 401(k) Retirement Plan – Pre-tax and Roth post-tax contributions available • Life Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term disability • Health Spending Account (HSA) • Transportation benefits • Employee Assistance Program • Time Off/Leave (PTO, Vacation or Sick Leave)

This is a hybrid position in Arlington,VA.

This position is anticipated to close on Sep 8, 2026.

About Actalent

Actalent is a global leader in engineering and sciences services and talent solutions. We help visionary companies advance their engineering and science initiatives through access to specialized experts who drive scale, innovation and speed to market. With a network of almost 20,000 consultants and 5,000 clients across the U.S., Canada, Asia and Europe, Actalent serves many of the Fortune 500. We are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing® winner for both client and talent service.

The company is an equal opportunity employer and will consider all applications withoutregard to race, sex, age, color, religion, national origin, veteran status, disability,sexual orientation, gender identity, genetic information or any characteristic protectedby law.

If you would like to request a reasonable accommodation, such as the modification oradjustment of the job application process or interviewing process due to a disability,please email actalentaccommodation@actalentservices.com for other accommodation options.

San Francisco Fair Chance Ordinance:Pursuant to the San Francisco Fair Chance Ordinance, for all positions located in thecity and county of San Francisco, we will consider for employment qualified applicantswith arrest and conviction records.

Massachusetts Lie Detector:It is unlawful in Massachusetts to require or administer a lie detector test as acondition of employment or continued employment. An employer who violates this lawshall be subject to criminal penalties and civil liability.

Use of Artificial Intelligence (AI):We may use Artificial Intelligence (AI) to support parts of our hiring process,including sourcing, screening, and evaluating candidates. AI helps assess applicationsand qualifications, but final decisions are made by our hiring team. By applying, youacknowledge and agree that your application may be reviewed using AI tools.