Employers and Sample Job Ads

Geological, Geophysical, Geotechnical, and Environmental Employers

There is of course a lot of overlap between categories, so the divisions made below are not perfect ...

Sample job ads are also sometimes listed - not that these are necessarily still current, but it gives an idea of what may be possible.

General Consulting

Hydrological, environmental, geotechnical, etc.

• Mongomery & Associates 

  • Field Geologist/Hydrogeologist

  • Hydrogeologist

  • Senior Hydrogeologist

• Thomas Harder & Co - Groundwater Consulting

  • Jan 2024: Staff Level Hydrogeologist Opening – Field Emphasis 

• GSI Solutions | Hydrogeology. Central Coast (Morro Bay, Santa Barbara) & Oregon.

  • Early career hydrogeologist

• Fugro (Geotechnical, geophysical data collection, 

  • Geological and Geophysical Surveys

  • Surveying and Mapping

  • Geotechnical Ground Investigations

  • Groundwater 

• Pacific Watershed Associates | Watershed management, geomorphology.

• Creeklands Conservation | Watershed management. Non-profit. San Luis Obispo area.

• TriHydro | Environmental Engineering Consulting. San Luis Obispo & elsewhere.

• ENGEO | Geotechnical and Environmental Consulting.

• Field Representative

• Ramboll Group 

  • Groundwater subsurface mapping project with aerial geophysics (or click here).

  • Water Resources Management: https://ramboll.com/services-and-sectors/water/water-resources-management

•  NV5 | Environmental and hydrological consulting

• WSC Water Systems Consulting 

  • Job ad for a Professional Hydrogeologist

  • They also hire civil engineers - as of 2021-10-18 there were four such positions

• Geosyntec Consultants

  • Job ad for an Environmental Geologic Modeler

• Thomas Harder & Co

  • Groundwater consulting (groundwater modeling, managed aquifer recharge, environmental assessment, etc)

  • Sample job ad for a field hydrogeologist (March 2022)

• Oneida Total Integrated Enterprises

  • Environmental Sampling Technician | Environmental Professional | MidSenior Geologist | MidLevel Hydrogeologist

• Geosolutions

• RMA Geoscience

• Cleath-Harris Geologists

  • Primarily hydrogeology consulting (San Luis Obispo)

• GEI Consultants

  • Groundwater management

• Seequent

  • Data management, software and visualization, ... 

• Sensors and Software (Ground Penetrating Radar i.e. GPR)

• Arcadis 

• Cotton Shires - Geotechnical and geologic consulting. Headquartered in Los Gatos, CA. 

• Atlas - Geologist job ad

• Geo-logic - geology/hydrogeology, geotech, and more.

• Earth Systems (Geotech)

• Geocon (Geotech)

• Spheros Environmental. One of the things they work on is groundwater resources. Here is a ArcGIS Storymap on Terry Ranch Aquifer Characterization Study  in northern Colorado, for example. 

  • Spheros appears to be a parent company to a set of independent units, many of which work in hydrogeology: https://spherosenvironmental.com/brands

  • For example this job ad for an entry level hydrogeologist is for LRE Water. Here are some relevant pages on the LRE Water website:

    • https://lrewater.com/services

    • https://lrewater.com/projects

    • https://lrewater.com/careers

  • Another company within Spheros Environmental is Northwater Consulting. 

    • They have a geophysics page.

    • And a careers page.

    • This is an interesting page about their offering of interactive reports for clients. A neat approach. 

Geophysical Data Acquisition

• HGI Hydrogeophysics (2025-09-19)

  • Field Technician I

  • Geoscientist I

  • Geoscientist II

  • HGI General Employment Opportunities page

• Quantec Geoscience | Specializing in magnetotelluric geophysical surveys

• Job ad for a Geophysical Operator

• Green Geophysics | Magnetotelluric data collection

• Spotlight Geophysical Services 

• Pyramid Geophysical Services - Near-surface geophysical imaging for geological, hydrological, environmental, etc., applications (North Carolina)

• VistaClara | Nuclear magnetic resonance imaging of aquifers. Direct detection of water, estimation of aquifer properties (e.g., porosity)

• Castillo Geophysical | Specializing in seismic surveys with a variety of supporting methods. Also see the Betsy Gun seismic source

• Subsurface Surveys 

• Applied Geophysics, Inc

• Logic Geophysics and Analytics | Extreme Geophysics!

• DIAS Geophysical 

• Collier Geophysics

  • Hager Geoscience (A Collier Geophysics company)

• Sander Geophysics | Airborne geophysical data collection

  • Job ad for a Geophysicist

• Guideline Geo | Geophysical Instrumentation and Data Collection

• Geonics | Manufacturer of electromagnetic geophysical equipment

• Microseismic

• Microseismicity analysis for energy exploration --> Geophysicist Data Analyst position job ad

• Subterraseis. Seismic reflection (and related) data collection, processing, and interpretation. 

• Geovision Geophysical Services. 

• Advanced Geoscience 

• Spectrum Geophysics

• Logic Geophysics 

Geothermal Energy Exploration and Development

• Fervo Energy  - Geothermal Energy Development

  • These are not entry-level jobs, but they are interesting and show possibilities for how a career could play out.

    • Senior Geologist  (June 2025)

    • Hydrogeologist (June 2025)

  • To see how geophysical surveying can be a part of geothermal exploration see Quantec Geoscience - Geothermal Exploration. Here is their Geothermal Projects page.

    • Quantec Geoscience is involved with other geologic exploration areas - for example, mineral exploration). They are involved in geophysical equipment design, field data collection / project management, interpretation, etc. In the section below is a linked job ad for a Geophysical Operator. 

Federal / Government

• Geophysicist - Department of the Interior, Bureau of Reclamation

• Geophysicist:

  •  Example 1 | Example 2

• Research Geophysicist: 

  • Example 1 | Example 2