Position SummaryRSI is recruiting for a Sr. Hydrogeochemist who will lead complex projects involving groundwater and contaminant characterization, conceptual site model development, long-term monitoring, remedial design, and performance evaluations.
Job Title: Sr. Hydrogeochemist
Location(s): Westminster, CO
Status: Full-Time
FLSA: Exempt
Hiring Range: $120,000.00 - $150,000.00.(The anticipated starting salary is based on the posted minimum requirements for this position. The offered salary will be based upon the selected applicant's education, training, and experience.)
This position is required to travel 10% of the time.
Essential Duties and Responsibilities- Lead multidisciplinary groundwater and environmental projects.
- Act as main point of contact for clients.
- Manage projects including, development of scopes of work to address groundwater issues, create associated budgets, schedules, and staffing plans to execute work.
- Lead project scoping efforts and overall project direction for legacy contaminated sites with input from cross-functional teams.
- Perform the acquisition, organization, and analysis of environmental field data, groundwater and geochemical evaluations including modeling, statistical and geostatistical evaluations, and conceptual site model development.
- Lead and direct the acquisition, organization, and analysis of environmental field data, hydrogeological and geochemical evaluations including modeling, statistical and geostatistical evaluations, and conceptual site model development. Lead and assist with numerical groundwater flow and reactive transport modeling and remedial design.
- Lead development of complex numerical flow and transport models to assess groundwater compliance strategy performance.
- Lead and perform the development of project documents and presentations.
- Support and mentor staff.
- Interface with senior management, and stakeholders.
- Other duties as assigned.
Required Education and Years of Relevant Experience- Bachelor's degree in Hydrogeology, Engineering, Geology, Geochemistry or related physical sciences field. Master's degree preferred.
- 5 years of relevant experience. 10 years preferred.
Licenses and Certifications- Valid Driver's License.
- Professional Geologist or Professional Engineer certification preferred.
Required Skills and Abilities- Excellent written and verbal communication skills.
- Expertise in field characterization.
- Experience with well drilling, coring/sampling, and monitoring well installation.
- Expertise in data acquisition and evaluation.
- Expertise with column test planning, implementation, and laboratory oversight.
- Expert in conceptual site model development.
- Experience with general laboratory oversight.
- Geochemical and reactive transport modeling skills with visualization and analysis technique knowledge.
- Experience with geochemical modeling programs, such as PHREEQC or the equivalent.
- Experience with application of statistics and geo-statistics.
- Experience with three-dimensional visualization and evaluation.
- Expertise in programing and scripting.
- Knowledge of geology, hydrogeology, geochemistry, and geophysics.
- Experience with remedial design and evaluation.
- Expertise with regulations and standards requirements.
- Knowledge of groundwater flow and contaminant transport fundamentals.
Clearance and Health Requirements- Criminal Background Check
- Pre-placement Drug Screening
- Fit for Duty Test (if applicable)
Essential Physical Requirements Medium: Work involves moving objects by exerting 20 to 50 pounds of force occasionally, or 10 to 25 pounds of force frequently, or an above-negligible amount and up to 10 pounds constantly. Physical demand requirements are in excess of those for light work.
Job Posting Close Date11/06/2026
