Senior Drainage Engineer

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Job Description:

Parsons is looking for an amazingly talented Senior Drainage Engineer to join our growing Stormwater Team for the East-Central United States area and to support critical infrastructure projects across the nation. In this role, you’ll work in a flexible, team-oriented environment, performing drainage and stormwater design on high‑impact transportation projects, mentor junior engineers, and collaborate with a multidisciplinary team that is shaping the future of mobility, safety, and resilience in our communities.

You’ll be backed by the resources of a global firm and a culture that values technical excellence, ownership, and growth—while enjoying flexibility, strong benefits, and opportunities to advance your career as a technical lead and project leader.

Why This Role is Different

• High impact & visibility: Take ownership of complex drainage and stormwater designs that directly improve safety, mobility, and sustainability on major transportation projects.

• Technical leadership: Serve as a go‑to drainage expert, leading design efforts and guiding junior staff in best practices and modern tools.

• Collaboration & variety: Work closely with roadway, environmental, structural, utilities, and other disciplines on a diverse mix of projects, including alternative project delivery (design‑build, CM/GC) work.

• Career growth: Build your profile with client interaction, proposal and business development support, and opportunities to grow into broader leadership roles.

What You’ll Be Doing

You will work with the East-Central Stormwater Team in the planning and design of drainage systems with an emphasis on stormwater quantity and stormwater quality systems for major infrastructure projects, with responsibilities that may include:

Technical design & analysis

• Prepare hydraulic and hydrologic calculations for storm drains, detention facilities, culverts, water quality (BMP/LID) features, and other related items.

• Develop storm drain plans, profiles, details, and specifications.

• Prepare erosion & sediment control plans, calculations for storage facilities, including temporary sediment basins, and other related items.

• Prepare stormwater pollution prevention plan (SWPPP) reports for project permitting.

• Apply standard DOT and/or local agency regulations for drainage, hydraulic, and hydrology standards and practices in your designs.

Leadership & coordination

• Work in a multi-disciplinary team environment to help deliver infrastructure design projects within the East-Central area and major infrastructure projects nationally.

• Work as part of the East-Central area Stormwater Team or lead design efforts for local projects as well as segments of larger alternative project delivery projects.

• Coordinate with counterparts in other design disciplines (roadway, structural, utilities, etc.) to develop comprehensive, integrated project designs.

• Provide mentorship and guidance to junior staff in standard engineering practices and methodologies, including CAD modeling software for drainage and stormwater engineering.

Quality, client interface & business support

• Implement quality assurance and quality control (QA/QC) standard practices to ensure accurate, constructible designs.

• Interface with clients to address review comments, design issues, and constraints, acting as a trusted technical resource.

• Support and participate in proposal and business development activities, bringing forward innovative drainage and stormwater solutions.

What You’ll Bring (Required)

• Bachelor’s Degree in Civil Engineering (or related field) and typically 8+ years of related work experience.

• Fundamentals of Engineering (FE/EIT) Certification and ability to obtain a PE license.

• Experience in structural and non-structural stormwater quantity and stormwater quality design directly related to transportation projects.

• Experience with MicroStation, OpenRoads Designer, and/or Civil 3D.

Desired / Preferred Qualifications

• Professional Engineer (PE) license strongly preferred.

• Experience with hydraulic/hydrologic modeling tools, including (but not limited to):

• Bentley PondPack

• Bentley OpenFlows Flowmaster

• HydroCAD

• HEC-HMS

• SWMM Modeling (e.g., EPA‑SWMM, PC‑SWMM)

• WinTR-55, Hydraulic Toolbox, among others

• Strong communication skills, including the ability to clearly convey technical concepts to both technical and non‑technical audiences.

• Experience writing drainage reports for transportation projects.

• Demonstrated experience leading drainage design

• Experience working on Alternative Project Delivery (design‑build, CM/GC) projects.

• Ability to work independently and assume responsibility for technical quality, schedule, and coordination.

Security Clearance Requirement:

None

This position is part of our Critical Infrastructure team.

For more than 80 years, our experts have designed and delivered the critical infrastructure that connects and protects communities around the world. We work in collaborative teams, both within the company and with our partners and customers, to plan, design, build, and modernize infrastructure. We take special pride in projects and solutions that improve communities as well as people’s quality of life by promoting economic growth, enhancing mobility, and increasing sustainability and resiliency. Powered by our people, we provide the imagination necessary to support our customers’ visions—and to help them see what's next!

Salary Range: $88,400.00 - $154,700.00

We value our employees and want our employees to take care of their overall wellbeing, which is why we offer best-in-class benefits such as medical, dental, vision, paid time off, Employee Stock Ownership Plan (ESOP), 401(k), life insurance, flexible work schedules, and holidays to fit your busy lifestyle!

This position will be posted for a minimum of 3 days and will continue to be posted for an average of 30 days until a qualified applicant is selected or the position has been cancelled.

Parsons is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status or any other protected status.

We truly invest and care about our employee’s wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest—APPLY TODAY!

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