Geologist​/Hydrogeologist

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.

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.

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.

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.

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.

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…