Drainage Engineer II

In a world of possibilities, pursue one with endless opportunities. Imagine Next!

At Parsons, you can imagine a career where you thrive, work with exceptional people, and be yourself. Guided by our leadership vision of valuing people, embracing agility, and fostering growth, we cultivate an innovative culture that empowers you to achieve your full potential. Unleash your talent and redefine what’s possible.

Job Description:

In a world of possibilities, pursue one with endless opportunities. Imagine Next!

Parsons is looking for a talented Drainage Engineer to help design the critical transportation and stormwater infrastructure that connects and protects communities across the country. As a key member of our multidisciplinary design team, you’ll work on high‑visibility projects, mentor junior engineers, and take ownership of your designs from concept through construction.

You’ll be supported by a collaborative team, industry‑leading tools, and a culture that truly invests in your growth—while enjoying the flexibility, benefits, and stability of a global engineering firm.

Why This Role is Different

• Meaningful impact: Design stormwater and drainage systems that improve safety, mobility, sustainability, and resilience for entire communities.

• Career growth & mentorship: Lead segments of complex projects, guide junior engineers, and work closely with senior drainage experts who are invested in helping you grow into a Technical Lead / Project Manager.

• Variety of projects: Contribute to local and national transportation projects, including highways, interchanges, corridors, and alternative project delivery (design‑build, CM/GC) work.

• Flexible, people‑first culture: Benefit from flexible work schedules, best‑in‑class benefits, and an Employee Stock Ownership Plan (ESOP)—allowing you to share in the company’s success.

What You’ll Be Doing

You will be a key contributor in the planning and design of drainage and stormwater systems for transportation infrastructure projects, with responsibilities including:

• Project & technical design

  • Perform hydraulic and hydrologic analysis for storm drains, detention/retention facilities, culverts, and water quality (BMP/LID) features.
  • Develop storm drain plans, profiles, details, and specifications in collaboration with senior drainage engineers.
  • Apply current DOT/FHWA drainage, hydraulic, and hydrology standards and practices in design.
  • Prepare technical calculations, exhibits, and drainage reports that clearly communicate your design approach.

• Team leadership & coordination

  • Manage and delegate daily tasks to junior engineers, providing mentorship and guidance on standard engineering practices and use of CAD drainage modeling software.
  • Coordinate with roadway, structural, utilities, environmental, and other disciplines to deliver integrated project designs.
  • Lead the drainage design effort for local projects as well as segments of larger alternative project delivery projects (design‑build, CM/GC).

• Quality, client interaction, and business support

  • Implement and champion QA/QC standard practices to ensure high‑quality, buildable designs.
  • Interface directly with clients to address review comments, resolve design issues or constraints, and present technical findings.
  • Support proposal efforts and business development activities by contributing technical write‑ups, level‑of‑effort estimates, and innovative design approaches.

What You’ll Bring (Required)

• Bachelor’s Degree in Civil Engineering (or related field).

• Typically 6+ years of related civil engineering experience, with a focus on drainage, stormwater, and/or hydrology.

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

• Experience in storm drain and water quality design on transportation projects (highways, roads, bridges, or related infrastructure).

• Proficiency with MicroStation, OpenRoads Designer, and/or Civil 3D in a production design environment.

• Strong verbal and written communication skills, including the ability to clearly document analyses and present findings to internal and external stakeholders.

• Ability to work both independently and as part of a collaborative team, taking ownership of assigned tasks and deliverables.

• Ability to work in the Denver office a minimum of two to three days per week.

Preferred Qualifications

• Professional Engineer (PE) license (or ability to obtain in the near term).

• Experience with CAD and related design software used in transportation projects (Bentley and/or Autodesk). [2]

• Working knowledge of standard DOT/FHWA drainage, hydraulic, and hydrology standards and practices.

• Experience with hydraulic/hydrologic modeling tools such as:

  • SWMM Modeling (EPA‑SWMM, XP‑SWMM, InfraWorks, PC‑SWMM)
  • StormCAD
  • HEC‑RAS
  • HEC‑HMS
  • ArcMap / GIS

• Experience writing drainage reports for transportation projects.

• Experience leading drainage design on complex or multi‑discipline projects.

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

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: $74,800.00 - $130,900.00

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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