Geologist/Hydrogeologist

Tetra Tech; Superior (CO); Hybrid; USD 60,000 - 70,000; Full time

Benefits offered by this job

Comprehensive benefits

Flexible work arrangement

Professional development opportunities

Job summary

Tetra Tech is seeking a Geologist to join our Superior or Longmont, CO offices. The role supports environmental projects, including groundwater modeling and field activities.

The ideal candidate has 1–4 years of environmental consulting experience, strong computational skills, and proficiency with Microsoft Access, ArcGIS, and groundwater modeling tools. Excellent written and oral communication are required, with the ability to work independently or in a team.

Qualifications

• BS in Geology or Hydrogeology required.
• 1–4 years of professional environmental consulting experience.
• Field experience including supervision of soil and groundwater investigations.
• Skilled technical writer.
• OSHA 40-hour HAZWOPER training or can be obtained within first month.

Responsibilities

• Assist with writing proposals and obtaining bids.
• Conduct field sampling programs and procedures.
• Perform soil, groundwater, soil vapor, and other environmental investigations; support groundwater monitoring and hydrogeologic evaluations.
• Evaluate site characterization data and support water feasibility studies and remediation design.
• Interface with subcontractors and internal resources.
• Develop sampling plans and health and safety plans; supervise field investigations.
• Prepare technical reports, memos, and responses to comments.
• Review figures, CSMs, data visualizations, and schematic designs for remediation projects.
• Review environmental, hydrogeologic and geotechnical data; perform statistical analyses.

Skills

Strong communication skills

Technical writing

Ability to learn quickly

Teamwork

Education

Bachelor of Science in Geology or Hydrogeology

Tools

Microsoft Access

ArcGIS Pro

Groundwater modeling tools

Finite-difference modeling

Finite-element modeling

SQL/Access databases

Job description

Tetra Tech is currently seeking a Geologist within our Superior or Longmont, CO offices. The Geologist will assist with implementing environmental projects, that could include groundwater modeling and field activities.

The ideal candidate will have 1 to 4 years of environmental consulting experience and strong computational and computer skills. Proficiency with databases, preferably Microsoft Access, ArcGIS, and groundwater modeling tools, including finite-difference and/or finite-element modeling approaches, is preferred. Attention to detail, strong oral and written communication skills, and the ability to quickly learn new technical skills are required. The successful candidate should have a strong work ethic, a positive attitude, and the ability to work effectively both independently and in a team environment.

Any candidates interested in this opportunity should apply by August 20, 2026 deadline.

Why Tetra Tech

At Tetra Tech, we are Leading with Science to solve the world’s most complex challenges. Our industry-leading experts in engineering and consulting are committed to driving positive change in communities around the world. For over 50 years, we have been at the forefront of innovation and sustainability. Today we stand as a market leader, offering cutting‑edge solutions in water, environment, energy, and international development. Our work has improved more than 625 million lives around the world.

Your Impact

Join Tetra Tech to make a real difference. Our work leverages cutting‑edge technologies, advanced analytics, and the expertise of world‑class scientists and engineers to create meaningful change around the world. Discover your full potential – join us to advance your career while leaving a lasting legacy.

Essential Job Functions

Assist with writing proposals, obtain bids from vendors and subcontractors, draft cost estimates and project budgets.

Conducting field sampling programs and field procedures.

Perform soil, groundwater, soil vapor, and other environmental investigations, support groundwater monitoring, hydrogeologic evaluations, and groundwater modeling efforts.

Evaluating site characterization data; assisting with water feasibility studies, remedial alternatives evaluations, remediation design, and implementation.

Interface with subcontractors and internal technical resources.

Develop sampling plans, health and safety plans, supervise and oversee field investigations.

Prepare technical reports, memos, response to comments tables.

Prepare and review figures, conceptual site models, data visualizations, and technical design schematics for remediation and environmental investigation projects.

Review and evaluate environmental, hydrogeologic and geotechnical data. Perform statistical analyses.

Support feasibility studies, remedial alternatives evaluations, remediation design, and implementation oversight.

Work with a multi‑disciplinary team of engineers, geologists, scientists, risk assessors, data managers, and other technical specialists.

Other duties as assigned.

Required Qualifications

Bachelor of Science (BS) degree in Geology or Hydrogeology required.

One to 4 years of professional environmental consulting experience is required.

Previous field experience required, including supervision of soil and groundwater investigations, sampling activities, and subcontractor oversight is required.

Must be a skilled technical writer.

OSHA 40-hour HAZWOPER Training required or can be acquired first month of employment.

Ability to travel and perform field work/oversight (up to approx. 20% of travel required).

A Pre-employment drug screening in compliance with state regulations is required.

Must possess a valid driver's license with a clean driving record without restrictions.

Preferred Qualifications

Master of Science (MS) degree preferred.

Experience with both sedimentary and hard rock drilling and well installation desired.

Previous experience developing and calibrating groundwater models is desired.

MSHA training preferred.

Experience with ArcGIS Pro or Auto CAD use desired.

Experience with SQL or Access database use desired.

Familiarity with geochemistry and statistical evaluations of water chemistry and trend analysis is desired.

Physical Requirements

Ability to lift, carry, push, and pull equipment weighing 25 -50lbs in variable weather and terrain.

• Ability to travel and perform field work/oversight as required (approx. 20% required).
• Ability to walk across variable terrain, including uneven ground, in all weather conditions (extreme hot/cold temperatures, loud noises, bugs, etc.).
• Have full range of motion to support field activities (ability to stand, bend, kneel, and reach during field activities).

Based out of the Superior or Longmont, CO offices with potential of a hybrid work arrangement, but the candidate must reside within 25 miles of the local offices. This arrangement is subject to review and may change at the company’s discretion.

Field work will include work to be performed outside, as a result will include working in various environmental factors (weather, altitude, terrain, noise, bugs, drilling sites, industrial facilities, etc.). This can include operating field instruments and tools, remaining stationary for long periods of time, walking, bending, lifting, and sitting for site assessments, sampling, oversight, and other field activities.

Office work will include extended periods sitting or standing at a desk and using a computer and other office equipment.

Additional Information

Full-time, Monday through Friday work schedule (40 hours). Occasionally extended hours may be required based on project and/or client needs.

Work will be performed in a field and office setting.

Target salary range: $60,000 to $70,000. Please note that Tetra Tech considers various factors in determining pay, including but not limited to: education, relevant and demonstrated work experience in the role, skills, geographic location, qualifications, certifications, and other competencies relevant to the needs of the business.

The perks of working at Tetra Tech include:

• Comprehensive and market‑competitive benefits.
• Tetra Tech offers the following optional benefits: Medical, Dental, Vision, Prescription, Accidental Death & Dismemberment, Long & Short‑Term Disability, Health & Dependent Care Flexible Spending. Financial Benefits: Group Term Life, Optional Group Term Life Insurance, Business Travel Accident Insurance, Health Savings Account, 401K, Employee Stock Purchase Plan, Time Off with Pay, Employee Assistance Program, Adoption Assistance, Leaves of Absence.
• Merit-based financial rewards.
• Flexibility and company‑wide commitment to work/life balance.
• Collaborative team atmosphere that values the contributions of all employees.
• Learning and development opportunities for ongoing professional growth.

About Tetra Tech

Tetra Tech is the leader in water, environment, and sustainable infrastructure, providing high‑end consulting and engineering services for projects worldwide. With 30,000 employees working together, Tetra Tech provides clear solutions to complex problems by Leading with Science to address the entire water cycle, protect and restore the environment, design sustainable and resilient infrastructure, and support the clean energy transition.

Tetra Tech is proud to be an Equal Opportunity Employer. All qualified candidates will be considered without regard to race, color, religion, national origin, age, disability, sexual orientation, gender identity, status as a protected veteran, or any other characteristic protected by law. Tetra Tech is a VEVRAA federal contractor and we request priority referral of veterans.

We invite applications from all interested parties.

Explore our open positions at https://www.tetratech.com/careers. Follow us on social media to learn more about our people, culture, and opportunities:

X (Twitter): @TetraTechJobs

We thank all applicants for their interest, however, only those candidates selected for interviews will be contacted.