Trilon Group

Infrastructure consulting for transportation and water

Senior Drainage Engineer

Water Resources EngineeringUpdated on Nov 13

Full-timeFredericksburg, VA, USA$120k - $180k /yrIn-person

About the Job

Requirements

Bachelor's degree in Civil Engineering or a related field.
7–12 years of experience in drainage, stormwater, or water resources engineering.
Professional Engineer (PE) license required, or ability to obtain Virginia licensure through reciprocity.
Experience with VDOT transportation projects and familiarity with the VDOT Drainage Manual.
Knowledge of FEMA, DEQ, and AASHTO standards and regulations.
Proficiency with HEC-RAS (1D and 2D), HEC-HMS, SWMM/InfoSWMM, MicroStation/OpenRoads Designer, GIS (ArcGIS), and other drainage design tools.
Strong analytical, communication, and organizational skills.
Ability to manage multiple assignments and work effectively in a collaborative environment.

Responsibilities

Perform hydrologic and hydraulic analyses and design for transportation and infrastructure projects.
Prepare drainage reports, stormwater management calculations, and supporting technical documentation.
Design storm sewer systems, culverts, channels, and erosion and sediment control measures.
Develop plans and models using HEC-RAS, HEC-HMS, SWMM, MicroStation, and OpenRoads Designer.
Coordinate with project managers, clients, and regulatory agencies to support project delivery.
Ensure designs comply with VDOT, DEQ, FEMA, and applicable local and federal regulations.
Participate in field investigations and provide construction support as needed.
Collaborate with roadway, traffic, and environmental teams to deliver integrated project solutions.
Assist with proposal preparation and provide technical guidance to junior engineering staff.

Rinker Design Associates (RDA) is seeking a talented Drainage Engineer with 7–12 years of experience to join our Transportation team. In this role, you'll contribute to the analysis and design of drainage and stormwater systems for a variety of roadway and infrastructure projects. You'll work closely with project managers and multidisciplinary teams to deliver high-quality solutions that enhance safety, mobility, and environmental stewardship.

If you are looking for the opportunity to take ownership of technical work, mentor junior staff, and grow your career while working on meaningful projects, we'd love to hear from you.

Perform hydrologic and hydraulic analyses and design for transportation and infrastructure projects.
Prepare drainage reports, stormwater management calculations, and supporting technical documentation.
Design storm sewer systems, culverts, channels, and erosion and sediment control measures.
Develop plans and models using HEC-RAS, HEC-HMS, SWMM, MicroStation, and OpenRoads Designer.
Coordinate with project managers, clients, and regulatory agencies to support project delivery.
Ensure designs comply with VDOT, DEQ, FEMA, and applicable local and federal regulations.
Participate in field investigations and provide construction support as needed.
Collaborate with roadway, traffic, and environmental teams to deliver integrated project solutions.
Assist with proposal preparation and provide technical guidance to junior engineering staff.

Bachelor's degree in Civil Engineering or a related field.
7–12 years of experience in drainage, stormwater, or water resources engineering.
Professional Engineer (PE) license required or ability to obtain Virginia licensure through reciprocity.
Experience with VDOT transportation projects and familiarity with the VDOT Drainage Manual.
Knowledge of FEMA, DEQ, and AASHTO standards and regulations.
Strong analytical, communication, and organizational skills.
Ability to manage multiple assignments and work effectively in a collaborative environment.
Proficiency with industry software tools, including:
- HEC-RAS (1D & 2D)
- HEC-HMS
- SWMM / InfoSWMM
- MicroStation / OpenRoads Designer
- GIS (ArcGIS) and other drainage design tools

About the Company

Trilon Group

Infrastructure consulting for transportation and water

Trilon Group provides infrastructure consulting in transportation, water, and municipal systems in the Mid-Atlantic region. It works by partnering with local governments, municipalities, and private clients to deliver planning, design support, and project management through fee-based engagements, expanding capabilities through alliances with firms like Rinker Design Associates and Wilson Engineers. The company differentiates itself with a platform-style growth approach backed by private equity and a People First culture focused on talent development. Its goal is to expand service offerings and market presence in the Mid-Atlantic by building scalable partnerships and using capital to support growth.

Company size: 51-200
Company stage: Growth Equity (Non-Venture Capital)
Total funding: $200M
Headquarters: Denver, CO
Founded: 2021

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