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