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Assistant Geologist Jobs in Ohio (NOW HIRING)

TERRACON

Assistant Geologist

Gahanna, OH · On-site

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 ...

TERRACON

Assistant Geologist

Gahanna, OH · On-site

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 ...

GAI Consultants

Geologist 3

Canton, OH

Prepare boring logs and geologic cross sections; assist with proposals, budgets, schedules ... Possess basic skills for geological/geotechnical investigations and construction monitoring ...

Haley & Aldrich

Staff Geologist 1

Miamisburg, OH

Draft technical sections of project communications and reports. * Assist with the development of ... Bachelor's degree in Geology, Environmental Science, or related field. * 0 to 2 years of related ...

Haley & Aldrich

Staff Geologist 1

Miamisburg, OH · On-site

Draft technical sections of project communications and reports. * Assist with the development of ... Bachelor's degree in Geology, Environmental Science, or related field. * 0 to 2 years of related ...

Haley & Aldrich

Staff Geologist 1

Cincinnati, OH

Draft technical sections of project communications and reports. * Assist with the development of ... Bachelor's degree in Geology, Environmental Science, or related field. * 0 to 2 years of related ...

Haley & Aldrich, Inc

Staff Geologist 1

Cincinnati, OH · On-site

Draft technical sections of project communications and reports. * Assist with the development of ... Bachelor's degree in Geology, Environmental Science, or related field. * 0 to 2 years of related ...

Haley & Aldrich

Staff Geologist 1

Cincinnati, OH

Draft technical sections of project communications and reports. * Assist with the development of ... Bachelor's degree in Geology, Environmental Science, or related field. * 0 to 2 years of related ...

Haley & Aldrich

Staff Geologist 1

Dayton, OH · On-site

$55K - $60K/yr

Draft technical sections of project communications and reports. * Assist with the development of ... Bachelor's degree in Geology, Environmental Science, or related field. * 0 to 2 years of related ...

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All JobsGeologist JobsAssistant Geologist JobsAssistant Geologist Jobs in Ohio

Assistant Geologist information

See Ohio salary details

$34.2K

$73.2K

$118.4K

How much do assistant geologist jobs pay per year?

As of Jul 27, 2026, the average yearly pay for assistant geologist in Ohio is $73,232.00, according to ZipRecruiter salary data. Most workers in this role earn between $53,200.00 and $88,400.00 per year, depending on experience, location, and employer.

What does an entry-level geologist do?

An entry-level geologist assists with fieldwork, collecting samples and data, and supports analysis of geological formations. They often use tools like maps, GPS devices, and software to document findings and may perform laboratory tests under supervision to gain experience in interpreting geological data.

What are Assistant Geologists?

Assistant Geologists are entry-level professionals who support geologists in studying the Earth’s structure, composition, and processes. Their duties typically include collecting and analyzing soil, rock, and water samples, conducting field surveys, and assisting with geological mapping. They work under the supervision of senior geologists in industries such as environmental consulting, mining, oil and gas, and government agencies. This role provides valuable hands-on experience and is often a stepping stone to more advanced geoscience positions.

What are the typical responsibilities of an Assistant Geologist in a fieldwork setting?

As an Assistant Geologist, you will often support senior geologists during field investigations, which may include collecting soil and rock samples, conducting site surveys, and recording geologic observations. You may also assist in geophysical or geochemical testing and help with mapping and data analysis back in the office. Fieldwork can be physically demanding and often requires travel to remote locations, but it provides valuable hands-on experience and exposure to a variety of geological projects. Team collaboration is common, as you’ll frequently work with environmental scientists, engineers, and drilling crews to ensure data accuracy and project success.

What are the key skills and qualifications needed to thrive as an Assistant Geologist, and why are they important?

To thrive as an Assistant Geologist, you need a solid background in geology or earth sciences, typically supported by a relevant bachelor's degree and foundational fieldwork experience. Familiarity with GIS software, mapping tools, and data analysis platforms is important, and certifications like OSHA HAZWOPER may be required for field safety. Strong observational skills, attention to detail, and effective communication are vital soft skills for collecting and reporting accurate geological data. These skills ensure reliable data collection, adherence to safety standards, and successful collaboration on geological projects.

What is the difference between Assistant Geologist vs Geoscientist?

AspectAssistant GeologistGeoscientist
Required CredentialsBachelor's degree in geology or related fieldBachelor's or master's degree in geology, geoscience, or related field
Work EnvironmentFieldwork, lab analysis, data collectionResearch, data analysis, fieldwork, report writing
Employer & Industry UsageMining, environmental consulting, oil & gasResearch institutions, government agencies, energy companies
Common Search & ComparisonYesYes

Assistant Geologists typically perform fieldwork and basic data collection under supervision, while Geoscientists often engage in research, complex data analysis, and report writing. Both roles require similar educational backgrounds, but Geoscientists usually hold advanced degrees and work in broader research or policy settings. Understanding these differences helps job seekers identify the right career path in geology-related fields.

What is the role of a geological assistant?

A geological assistant supports geologists by collecting and analyzing rock, soil, and mineral samples, preparing reports, and maintaining field equipment. They often assist with fieldwork, data entry, and laboratory tasks, requiring knowledge of geological tools and safety procedures.

Is there a high demand for geologists?

The demand for geologists, including assistant geologists, is generally steady due to ongoing needs in natural resource exploration, environmental assessment, and hazard analysis. Employment opportunities tend to be influenced by the mining, oil and gas, and environmental sectors, with a requirement for strong fieldwork skills and relevant certifications. Overall, job prospects are favorable for those with specialized knowledge and experience in geology.

Is a BA in geology worth it?

A BA in geology can be valuable for an assistant geologist role, providing foundational knowledge of earth sciences and fieldwork skills. However, many employers prefer or require a bachelor's degree in geology or a related field, and additional certifications or technical skills can enhance job prospects.
What are the most commonly searched types of Geologist jobs in Ohio? The most popular types of Geologist jobs in Ohio are:
What are popular job titles related to Assistant Geologist jobs in Ohio? For Assistant Geologist jobs in Ohio, the most frequently searched job titles are:
What job categories do people searching Assistant Geologist jobs in Ohio look for? The top searched job categories for Assistant Geologist jobs in Ohio are:
What cities in Ohio are hiring for Assistant Geologist jobs? Cities in Ohio with the most Assistant Geologist job openings:
Assistant Geologist jobs near you
Infographic showing various Assistant Geologist job openings in Ohio as of July 2026, with employment types broken down into 1% As Needed, 76% Full Time, 20% Part Time, 1% Temporary, and 2% Contract. Highlights an 98% Physical, 1% Hybrid, and 1% Remote job distribution, with an average salary of $73,232 per year, or $35.2 per hour.
Assistant Geologist

Assistant Geologist

TERRACON

Gahanna, OH • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 4 days ago

Terracon rating

7.5

Company rating: 7.5 out of 10

Based on 119 frontline employees who took The Breakroom Quiz

48th of 73 rated business consultants

Job description


Evaluate and interpret subsurface field and sampling data including soil and groundwater to develop conclusions concerning the environmental and geologic site conditions. Generate subsurface maps and cross-sections and collaborate with engineering and environmental scientist staff on projects. Oversee field monitoring and testing of soils including boring investigations and soil type classification. Interpret soil, bedrock and groundwater elevation and quality data. Prepare written plans and reports related to site investigations, assessments and remediation activities. Projects may include construction projects focusing on earthwork and structural foundations; well design and sampling; environmental assessments including Phase I/II site assessments; seismic risk assessments.
Responsibilities
  • 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.
  • Entry level geological professional responsible for gathering data and information to be evaluated by other team members.
  • Performs sampling and testing of water, soil, and other materials.
  • Tabulate and prepare data for written reports.
  • Assist with report preparation by summarizing data and information within reports.
  • Operates field monitoring equipment.
  • Assists with operation and maintenance of remediation and instrumentation systems.
  • Transport material, samples or documents to the laboratory for further testing and analysis.
  • Maintains and calibrates field monitoring equipment.
  • 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.
  • Developing level Geologist/ Hydrogeologist responsible for conducting analyses of component portions of projects; assignments are designed to develop knowledge and abilities.
  • Performs site visits, field observations and field data collection or assignments.
  • Assists in the collection and analysis of data from sampling, reports, maps, drawings, tests and aerial photographs to evaluate, plan and permit projects.
  • Conducts water, soil and other sampling.
  • Implements technical requirements to complete client projects by directing field staff to sample, test and collect data and/or document site activities.
  • Outlines required investigative program(s) by selecting the proper alternative techniques to conduct site studies in field of expertise.
  • May have limited client contact pertaining to specific projects/tasks.
  • 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.
  • 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.
  • Mid-level, experienced Geologist/ Hydrogeologist responsible for conducting site testing and making recommendations for systems design on medium sized projects with a variety of complexity.
  • Participates with 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 both small and large projects including quality control review of proposals written by others.
  • Evaluates complex laboratory and field data and assembles in written reports.
  • May serve as team member or lead in meetings and communications with client pertaining to specific projects/tasks.
  • May oversee work performed by lower level Geologists/Hydrogeologists.

Qualifications
  • Bachelor's degree in Geology, Hydrogeology or related field.
  • A valid driver's license with acceptable violation history may be required.

Preferred Qualifications:
  • Certification in field of expertise

About Us
Terracon is a 100 percent employee-owned multidiscipline consulting firm comprised of more than 8,000 curious minds focused on solving engineering and technical challenges from more than 200 locations nationwide. Since 1965, Terracon has evolved into a successful multi-discipline firm specializing in environmental, facilities, geotechnical, and materials services. Terracon's growth is due to our talented employee-owners exceeding expectations in client service and growing their careers with new and exciting opportunities in the marketplace. Terracon was recognized as the #1 firm in Asbestos and Lead Abatement.
Terracon's vision of "Together, we are best at people" is demonstrated through our excellent compensation and benefits package. Based on eligibility, role and job status, we offer many programs including medical, dental, vision, life insurance, 401(k) plan, paid time off and holidays, education reimbursement, and various bonus programs.
About the Team
Innovation and hands-on practice come together in our geotechnical consulting services. We provide geotechnical services nationwide for a wide range of projects, drawing on six decades of historical geotechnical data, a fleet of more than 200 drill rigs, 140 accredited laboratories, and thousands of employees to quickly organize or capture site data wherever projects are located. From AI-supported solutions and predictive technologies to geophysics and traditional exploration, we deliver precision, value-added subsurface information and engineering and scientific expertise to solving our clients' challenges and achieve their goals for project sustainability, quality, and efficiency.

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