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Staff Geologist

$68k to $82k

Lombard, IL, United StatesPosted Aug 4, 2026

Job description

Staff Geologist Location: Lombard, IL Salary - $68,420.00 - $82,060.00 Evaluate and interpret subsurface investigation data, including soil, groundwater, and bedrock conditions, to assess environmental and geologic site characteristics and support engineering design recommendations. Develop detailed subsurface maps, geologic models, and cross-sections while collaborating with multidisciplinary teams of engineers, geologists, and environmental scientists on complex infrastructure, development, and remediation projects.

Lead and oversee field investigations, including soil borings, groundwater monitoring well installation, environmental sampling, and geotechnical testing activities. Analyze soil stratigraphy, groundwater elevations, hydrogeologic conditions, and environmental analytical data to identify site constraints, assess risk, and support regulatory compliance.

Prepare comprehensive technical reports, work plans, and environmental documentation related to site characterization, due diligence, remediation, and construction support activities. Contribute to projects involving earthwork and foundation design, Phase I and Phase II Environmental Site Assessments (ESA), groundwater monitoring and sampling programs, remediation planning, well design, and seismic and geologic hazard evaluations.

Follow safety rules, guidelines and standards for all projects. Participate in pre-task planning. Report any safety issues or concerns to management. Be responsible for maintaining quality standards on all projects. Proficient Geologist/ Hydrogeologist responsible for conducting site testing and making recommendations for systems design on smaller projects of minimal complexity.

May assist more senior Geologists on large, more complex projects. Performs site visits, field observations and field data collection or assignments. Implements technical requirements to complete client projects by directing and supervising field staff to sample, test and collect data and/or document site activities. Responsible for developing written proposals to clients for approval by senior level professionals.

Evaluates moderately complex laboratory and field data and assembles in written reports. May serve as team member or participate in meetings and communications with client pertaining to specific projects/tasks. May oversee work performed by lower-level Geologists/Hydrogeologists. Bachelor’s degree in Geology, Hydrogeology or related field and a minimum of 3 years’ related experience.

Master’s degree preferred. A valid driver’s license with acceptable violation history may be required.

Preferred Qualifications

Certification in field of expertise

Description copied from Terracon's careers page. Read the full posting before you apply.

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