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Development Geologist Jobs in Illinois (NOW HIRING)

Brown and Caldwell

Geologist/Hydrogeologist

Chicago, IL · On-site

The Geologist/Hydrogeologist role is tasked with basic foundational work in the fields of geology ... development opportunities. For more information, visit www.brownandcaldwell.com This position is ...

Brown and Caldwell

Geologist/Hydrogeologist

Chicago, IL · On-site +1

The Geologist/Hydrogeologist role istasked with basic foundational work in the fields of geology ... development opportunities. For more information, visit www.brownandcaldwell.com This position is ...

TERRACON

Senior Environmental Geologist

Chicago, IL · On-site

$102K - $130K/yr

... and development of plans and specifications, observation and inspection, and the writing ... Senior level Geologist/ Hydrogeologist responsible for leading complex projects requiring ...

TERRACON

Senior Environmental Geologist

Chicago, IL · Hybrid

$102K - $130K/yr

Senior Environmental Geologist Hybrid Chicago, IL OR Glendale Heights, IL OR Lombard, IL Salary ... and development of plans and specifications, observation and inspection, and the writing ...

ConeTec

Assistant Field Geologist

Elk Grove Village, IL · On-site

$56K - $59K/yr

SCOPE OF POSITION The Assistant Field Geologist will be a quick study, able to learn and intuit the ... Continuous development of one's skills and working knowledge of the ConeTec's equipment, systems ...

ConeTec

Assistant Field Geologist

Elk Grove Village, IL · On-site

SCOPE OF POSITION The Assistant Field Geologist will be a quick study, able to learn and intuit the ... Continuous development of one's skills and working knowledge of the ConeTec's equipment, systems ...

Rock Valley College

Adjunct - Geology

Rockford, IL

Adjunct - Geology Department: Physical Science (PHS) Division: Mathematics & Sciences (MAS ... Experience with curriculum development and assessment is preferred. * Interest in involvement in ...

Rock Valley College

Adjunct - Geology

Rockford, IL · On-site

Adjunct - Geology Department: Physical Science (PHS) Division: Mathematics & Sciences (MAS ... Experience with curriculum development and assessment is preferred. * Interest in involvement in ...

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All JobsDevelopment Geologist JobsDevelopment Geologist Jobs in Illinois

Development Geologist information

See Illinois salary details

$23.7K

$89.2K

$144.3K

How much do development geologist jobs pay per year?

As of Jul 18, 2026, the average yearly pay for development geologist in Illinois is $89,234.00, according to ZipRecruiter salary data. Most workers in this role earn between $55,719.00 and $128,550.00 per year, depending on experience, location, and employer.

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

To thrive as a Development Geologist, you generally need a degree in geology or earth sciences, with expertise in sedimentology, stratigraphy, and reservoir characterization. Familiarity with geological modeling software (such as Petrel), seismic interpretation tools, and experience with well log analysis are typically required. Strong analytical thinking, attention to detail, and effective teamwork and communication skills are crucial in this role. These skills are vital for accurately evaluating subsurface formations, optimizing hydrocarbon extraction, and collaborating with multidisciplinary teams to maximize resource development.

What type of geologist gets paid the most?

Among geologists, petroleum geologists typically earn the highest salaries due to their work in the oil and gas industry, which often offers higher compensation for expertise in exploration and production. Experienced geologists with advanced degrees, certifications, and skills in seismic interpretation or reservoir modeling tend to command higher pay, especially in the energy sector.

What is the highest paying geologist job?

The highest paying geology-related roles are often senior or specialized positions such as petroleum geologists, exploration managers, or geoscience directors, especially in the oil and gas industry. These roles typically require extensive experience, advanced technical skills, and often involve working in remote or challenging environments, with salaries exceeding $150,000 annually in some cases.

How does a Development Geologist typically collaborate with engineers and other subsurface professionals on oil and gas projects?

Development Geologists work closely with reservoir engineers, drilling engineers, and geophysicists to optimize field development plans. They interpret geological data to create detailed reservoir models, which guide drilling locations and production strategies. Regular cross-disciplinary meetings and data-sharing are common, ensuring that geological insights are integrated with engineering constraints to maximize resource recovery. This collaborative environment helps align project goals and troubleshoot challenges as they arise.

What is the difference between Development Geologist vs Exploration Geologist?

AspectDevelopment GeologistExploration Geologist
CredentialsBachelor's or Master's in Geology, often with industry certificationsBachelor's or Master's in Geology, often with certifications
Work EnvironmentOn-site at oil and gas fields, working with drilling and production teamsFieldwork in remote areas, conducting surveys and sampling
Industry UsageFocuses on developing known reservoirs and optimizing productionFocuses on discovering new reserves and exploration activities

Development Geologists primarily work on mature fields to enhance extraction, while Exploration Geologists seek new reserves. Both roles require similar educational backgrounds and certifications but differ in their focus and work environment.

What does a development geologist do?

A development geologist analyzes subsurface rock formations to identify and evaluate hydrocarbon reservoirs, supporting the development of oil and gas fields. They interpret geological data, create maps, and collaborate with engineers to optimize drilling and production processes, often using tools like seismic imaging and geological modeling software.

Is there a high demand for geologists?

Development geologists are in moderate demand, especially in the oil and gas, mineral exploration, and environmental sectors. Employment opportunities depend on industry activity, commodity prices, and technological advancements, with skills in GIS, data analysis, and fieldwork being valuable. Overall, demand can fluctuate based on market conditions and energy policies.
What are popular job titles related to Development Geologist jobs in Illinois? For Development Geologist jobs in Illinois, the most frequently searched job titles are:
What job categories do people searching Development Geologist jobs in Illinois look for? The top searched job categories for Development Geologist jobs in Illinois are:
What are popular job titles related to Development Geologist jobs in IL? For Development Geologist jobs in IL, the most frequently searched job titles are:
Development Geologist jobs near you
Infographic showing various Development Geologist job openings in Illinois as of July 2026, with employment types broken down into 1% As Needed, 86% Full Time, 11% Part Time, and 2% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $89,234 per year, or $42.9 per hour.
Geologist/Hydrogeologist

Geologist/Hydrogeologist

Brown and Caldwell

Chicago, IL • On-site

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 24 days ago

Job description

The Geologist/Hydrogeologist role is tasked with basic foundational work in the fields of geology and hydrogeology. This role principally involves carrying out routine tasks, solving elementary problems, and learning and applying fundamental skills and knowledge in geology, hydrogeology, geochemistry, and geophysics. The role is carried out under the close supervision and guidance of experienced colleagues and supervisors.
Responsibilities
  • Assist in field investigations, including water and soil sampling.

  • Assist with basic well logging and field data collection tasks in a supervised setting.

  • Help in the examination and interpretation of geological, hydrogeological, geophysical, and geochemical data.

  • Follow all safety protocols and procedures related to the role.

  • Maintain and update data logs of all performed tasks.

  • Flexibility to adapt and execute various additional assignments based on evolving needs.

Skills and Competencies
  • Basic understanding of geology, hydrogeology, geophysics, and geochemistry.

  • Proficiency in using sampling equipment.

  • Basic analytical skills to interpret geological data and information.

  • Basic proficiency in using software and tools associated with geological studies.

Experience
  • Typically, a minimum of 0-2 years of related work experience in geology and hydrogeology or related field.

  • Encouraged to certify in the SMS framework in the first six months of being in the role.

Education
  • A bachelor's degree in geology, hydrogeology, or related field, or equivalent experience is required.

Preferred Qualifications
  • Experience with Computer-Aided Design (AutoCAD) is preferred.
  • Proficiency in Microsoft Word and Excel for data organization and reporting.
  • Demonstrated ability to interpret maps and navigate varied terrain effectively.
  • Capability to safely and routinely operate pumps, hand tools, and power tools in a field environment, including the ability to troubleshoot equipment issues as they arise.
  • Foundational knowledge of applicable regulations, including an understanding of local, state, and federal compliance requirements.
  • Strong technical writing skills.
  • Willingness and ability to travel up to approximately 40%, with increased travel during the peak field season (late March through October).
  • Valid driver's license.
  • Comfort and confidence driving on varied and occasionally challenging terrain.

Salary Range: The anticipated starting pay range for this position is based on the employee's primary work location and may be more or less depending upon skills, experience, and education. These ranges may be modified in the future.
Location A: $59,000 - $79,000
Location B: $64,000 - $87,000
Location C: $70,000 - $95,000
You can view which BC location applies to you here. If you have any questions, please speak with your Recruiter.
Benefits and Other Compensation: We provide a comprehensive benefits package that promotes employee health, performance, and success which includes medical, dental, vision, short and long-term disability, life insurance, an employee assistance program, paid time off and parental leave, paid holidays, 401(k) retirement savings plan with employer match, performance-based bonus eligibility, employee referral bonuses, tuition reimbursement, pet insurance and long-term care insurance. Click here to see our full list of benefits.
About Brown and Caldwell
Headquartered in Walnut Creek, California, Brown and Caldwell is a full-service environmental engineering and construction services firm with 50 offices and over 2,100 professionals across North America and the Pacific. For more than 75 years, we have created leading-edge environmental solutions for municipalities, private industry, and government agencies. We strive to be the company of choice-to our clients, who benefit from our passion for delivering exceptional quality, and to our employees, present and future, who share our commitment to client service, collaboration, and innovation. Join us, and you will find a home where you can do your best work, reach new levels of expertise, and enjoy exceptional development opportunities. For more information, visit www.brownandcaldwell.com
This position is subject to a pre-employment background check and a pre-employment drug test.
Notice to Third Party Agencies: Brown and Caldwell does not accept unsolicited resumes from recruiters or employment agencies. In the event a recruiter or agency submits a resume or candidate without a previously signed agreement and approved engagement request with Brown and Caldwell, Brown and Caldwell reserves the right to pursue and hire those candidate(s) without any financial obligation to the recruiter or agency.
Brown and Caldwell is proud to be an EEO/AAP Employer. Brown and Caldwell encourages protected veterans, individuals with disabilities, and applicants from all backgrounds to apply. Brown and Caldwell ensures nondiscrimination in all programs and activities in accordance with Title VI of the Civil Rights Act.
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This employer is required to notify all applicants of their rights pursuant to federal employment laws.
For further information, please review the Know Your Rights notice from the Department of Labor.

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