Transportation Engineer 7-Hydraulics

Trinnex Inc.; Pennsylvania; On-site; USD 95,846 - 167,731; Full time

Job summary

CDM Smith Inc. is seeking a Senior Transportation Engineer to lead drainage, hydraulics, hydrology, and stormwater design for highway and infrastructure projects across the United States.

You will act as a technical leader and drive projects from concept through final design, ensuring adherence to client objectives, budgets, and schedules. The role requires PE licensure and about 12 years of related experience, with travel 0–10%.

Qualifications

• Bachelor’s degree in Civil, Transportation, or Structural Engineering.
• Professional engineering (PE) license is required.
• Approximately 12 years of related experience.
• Domestic and/or international travel may be required.

Responsibilities

• Lead the planning, analysis, and design of drainage, hydraulic, hydrologic, and stormwater systems for transportation infrastructure.
• Develop and oversee large-scale transportation projects from preliminary engineering through final design, ensuring compliance with client objectives, project schedules, budgets, and quality standards.
• Prepare and review Erosion and Sediment Control Plans, NPDES permit submissions, drainage reports, hydraulic studies, and stormwater management documentation.
• Perform and oversee hydraulic and hydrologic modeling using industry-standard software, including HEC-RAS, GeoHEC-RAS, HEC-HMS, WinTR-55, HydroCAD, and PondPack.
• Utilize advanced CADD 3D/4D software in support of transportation projects.
• Review designs for compliance with regulations and firm standards; sign and seal documents as required.
• Conduct site reviews, field investigations, and inspections to verify design assumptions and project requirements.
• Collaborate with multidisciplinary teams and stakeholders throughout the project lifecycle.
• Support business development through proposals, interviews, and responses to RFPs.

Education

Bachelor’s degree in Civil, Transportation, or Structural Engineering

Professional engineering (PE) license

12 years of related experience

Tools

HEC‑RAS

GeoHEC‑RAS

HEC‑HMS

WinTR‑55

HydroCAD

PondPack

Job description

With general direction, leads and develops transportation-related engineering designs of moderate to high complexity for highway, roadway, and other infrastructure projects to meet client requirements. This role offers the opportunity to support a wide variety of transportation design projects across the country while serving as a technical leader in drainage, hydraulics, hydrology, and stormwater management.

Key Responsibilities

• Lead the planning, analysis, and design of drainage, hydraulic, hydrologic, and stormwater management systems for transportation infrastructure projects.
• Develop and oversee large-scale transportation projects from preliminary engineering through final design, ensuring compliance with client objectives, project schedules, budgets, and quality standards.
• Prepare and review Erosion and Sediment Control Plans, National Pollutant Discharge Elimination System (NPDES) permit submissions, drainage reports, hydraulic studies, and stormwater management documentation.
• Perform and oversee hydraulic and hydrologic modeling using industry-standard software, including HEC-RAS, GeoHEC-RAS, HEC-HMS, WinTR-55, HydroCAD, and PondPack.
• Utilize advanced computer-assisted design and drafting (CADD) 3D and 4D software and practices in support of transportation projects.
• Review engineering designs and deliverables for compliance with federal, state, and local regulations, as well as firm standards and quality requirements.
• Sign and seal engineering documents and provide final design approvals, as required.
• Conduct site reviews, field investigations, construction inspections, and engineering studies to verify design assumptions and project requirements.
• Update design criteria and project requirements based on regulatory changes, site conditions, and client needs.
• Collaborate with multidisciplinary project teams, clients, agencies, and stakeholders throughout the project lifecycle.
• Support business development efforts by contributing to proposals, reviewing technical approaches, participating in interviews, and assisting in responses to Requests for Proposals (RFPs).
• Meet with existing and prospective clients to understand project needs and build long-term relationships.
• Contribute to the firm’s technical knowledge management initiatives through white papers, technical documentation, presentations, and publication of technical papers.
• Represent the firm at industry conferences, professional organizations, and technical events to enhance the visibility of the firm’s services and expertise.
• Perform other duties as assigned.

Leadership & Staff Development

• Provide technical leadership, guidance, and quality oversight to engineering and design staff.
• Mentor, train, and develop junior engineers and designers, helping to expand the firm’s technical bench strength and future leadership pipeline.
• Lead project tasks and manage design staff from preliminary engineering through final design delivery.
• Foster professional growth through coaching, knowledge sharing, and hands‑on project development opportunities.
• May supervise and direct the work of junior engineers and technical staff.

Qualifications

Bachelor’s degree in Civil, Transportation, or Structural Engineering or related discipline. Professional engineering (PE) license. 12 years of related experience. Domestic and/or international travel may be required. Equivalent additional directly related experience will be considered in lieu of a degree.

Preferred Qualifications

Strong background in drainage and hydraulic analysis, and stormwater management design. Experience preparing Erosion and Sediment Control and National Pollution Discharge Elimination System permit submissions.

Experience working on PennDOT and Pennsylvania Turnpike project teams. Working knowledge of submission requirements for PennDOT and PTC projects. Experience in task management leading design staff from preliminary design through final design.

Expert knowledge of Hydraulic, Hydrology, and Stormwater analysis and design practices. Knowledge of computer assisted design and drafting (CADD) 3D and 4D software and practices.

Preferred Software Experience

• HEC‑RAS
• GeoHEC‑RAS
• HEC‑HMS
• WinTR‑55
• HydroCAD
• PondPack

Travel Requirements

10% or less

Visa Sponsorship

No – this position does not support sponsorship in the United States.

Compensation

Pay Range Min: USD $95,846.00

Pay Range Max: USD $167,731.00

EEO Statement

We attract the best people in the industry, supporting their efforts to learn and grow. We strive to create a challenging and progressive work environment. We provide career opportunities that span a variety of disciplines and geographic locations, with projects that our employees plan, design, build and operate as diverse as the needs of our clients. CDM Smith Inc. and its divisions and subsidiaries are an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, pregnancy related conditions, childbirth and related medical conditions, sexual orientation, gender identity or gender expression), national origin, age, marital status, physical or mental disability, veteran status, citizenship status, genetic information or any other characteristic protected by applicable law.