Civil-Hydrologic Engineer

About RSI

RSI is a dynamic group of companies that has provided services to major federal clients and Fortune 500 engineering and construction companies since 1996. We have experience in complex, highly regulated markets providing environmental, nuclear, construction management, project delivery, and specialty professional services while maintaining an excellent safety record.

We offer a full range of benefits including a generous PTO plan, paid holidays, FEHB medical, dental, vision, 401K (100% match up to 4% eligible compensation) and 100% immediate vesting, basic and supplemental life insurance, and short‑ and long‑term disability.

RSI is headquartered in Oak Ridge, Tennessee, and is a wholly owned operating company of ASRC Industrial (AIS). AIS is a wholly owned operating company of Arctic Slope Regional Corporation (ASRC), an Alaska Native Corporation (ANC). Through ASRC, we are a certified Minority Business Enterprise (MBE) and Small Disadvantaged Business (SDB), and we also offer 8(a) options.

Job Title: Civil‑Hydrologic Engineer

Location(s): Westminster, CO

Status: Full‑Time

FLSA: Exempt

Hiring Range: $ - $ per year.

Travel required less than 35% of the time.

RSI is recruiting for a Civil‑Hydrologic Engineer who will serve as a Subject Matter Expert (SME) for the Applied Studies & Technology (AS&T) program. The role will work under the mentorship of senior staff contributing to hydrologic analyses of engineered disposal cell covers and erosion protection systems. The position will lead forensic investigations, root‑cause failure analyses, and complex risk assessments of engineered waste covers.

The Civil‑Hydrologic Engineer will apply advanced soil and rock mechanics to evaluate disposal cell performance over 200‑ to 1,000‑year regulatory time frames. Additionally, this role will author key programmatic tools, interface with regulatory bodies like the NRC, and translate complex research into actionable guidance. By collaborating with senior scientists, mentoring early‑career engineers, and partnering with project managers, the engineer will ensure field investigations remain on scope and schedule while analyzing how natural processes impact cover integrity and water balance over time.

• Conduct hydrologic analyses of disposal cell covers, diversion channels, and erosion protection systems under senior direction, with exposure to industry‑standard modeling tools (e.g., HEC‑RAS).
• Review hydrologic characterizations of Uranium Mill Tailings Radiation Control Act (UMTRCA) disposal sites prepared by external parties, including the U.S. Army Corps of Engineers (USACE), to help ensure DOE‑LM technical interests and long‑term stewardship objectives are adequately captured.
• Participate in physical model (hydraulic flume) studies and associated work plans evaluating localized erosion protection performance of cover systems.
• Support field investigations at UMTRCA and Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) legacy sites, including data collection, characterization, and documentation of erosion and geomorphic features.
• Contribute to and draft technical reports and apply established risk‑informed decision‑support frameworks (e.g., erosion risk scoring) under senior review.
• Perform comprehensive technical reviews of hydrology, hydraulics, sediment transport, flooding, and engineered barrier designs. Formulate risk‑informed strategies to ensure strict compliance with NRC UMTRCA (Title I and Title II) and EPA CERCLA regulations.
• Support technical collaboration with regulatory bodies (NRC, EPA, state/local agencies), tribal partners, and research universities. Participate in seminars, national engineering committees, and review findings in peer‑reviewed journals.
• Exposure to one or more hydrologic modeling tools (e.g., HEC‑RAS); willingness to develop proficiency across the program’s analysis suite.
• Other duties as assigned.

• Bachelor’s degree in Engineering or related field. Master’s degree preferred.
• 5 years of relevant experience.
• Experience…