Geotechnical Engineer

The Opportunity:

Tetra Tech is currently seeking an experienced Geotechnical Engineer working from our Billings (preferred), Helena, and Missoula Montana offices, multiple Colorado office locations, or our Phoenix, AZ office. Our project assignments allow engineers to work and travel within the spectacular Rocky Mountain region and across the United States on diverse client projects and in various industries, including public and private infrastructure, solar and wind/renewable energy, commercial development, environmental hazard sites, mining, and oil and gas.

Typical geotechnical projects touch the entire spectrum of geotechnical engineering, including: heavy civil infrastructure including deep foundation, slope, and retaining wall design, geologic hazard studies and mitigation, soil and rock slope stability analyses, waste containment design, horizontal directional drill (HDD) design, shallow and deep foundation design, bridge and highway corridor design, pavement section design, field instrumentation and monitoring, deep foundation load testing, and construction oversight and materials inspection.

Successful candidate should have strong communication and technical skills plus the ability to generate new work.

Experience with managing projects in the geotechnical/civil, environmental, hydrology or hydraulics fields is a plus. Experience in the following project types, including construction of, is also desired: infrastructure, mining and mine reclamation, geohazards, dams and levees, tunneling and trenchless design, and general construction. Engage with, support, and manage other staff engineers, fostering a spirit of collaboration and teamwork, and setting high expectations as a team.

Any candidates interested in this opportunity should apply by the June 26, 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:

* Project-Level Geotechnical Engineer to provide coordination and oversight for geotechnical drilling and design projects.
* Perform geotechnical field reconnaissance.
* Assist with geophysical field investigations.
* Coordinate materials testing for geotechnical projects.
* Conduct geotechnical analyses such as slope stability, settlement, seepage, foundation design, road section design.
* Geotechnical report preparation.
* Review engineering reports of coworkers.
* Prepare proposals and cost estimates for new work.
* Perform geotechnical oversight on construction projects.
* Professionally interact with clients in meetings, phone calls, and emails.
* Strictly adhere to company health and safety standards and expectations.
* Responsible for marketing new and existing clients and securing new work opportunities.
* Opportunity for advancement includes progressive project management and other technical training, and supervision/mentoring of less experienced team members.
* Other duties as assigned.

Required Qualifications:

* BS in Geotechnical Engineering, Geologic Engineering, or related field required.
* Three to eight+ years of experience in geotechnical engineering with project management capabilities or experience.
* PE or ability to obtain within 6 months. Ability to obtain PE reciprocity in multiple states (MT, CO, or AZ).
* Experienced in preparation of engineering plans and specifications packages for public and private projects.
* Able to perform complex geotechnical design analysis, calculations, and proficient with current geotechnical design software.
* Familiarity with geotechnical lab testing and construction materials testing expected.
* Excellent writing and speaking skills, comfortable with client communications.
* Ability to work independently, and prepare and manage budgets is critical.
* Strong communication, technical, computer design, and writing skills.
* Proficient in MS Word, Excel and other Microsoft software.
* Ability to travel and perform field work/oversight occasionally (approx.