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 July 31, 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. <25% 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:

• HAZWOPER and MSHA certification preferred.

Physical Requirements:

• Ability to lift, carry, push, and pull equipment weighing up to 50lbs in variable weather and terrain.
• Ability to travel and perform field oversight (<25% required).
• Ability to walk across variable terrain, including uneven ground and steep slopes, in all weather conditions for up to 10-14 day work stints (extreme hot/cold temperatures, loud noises, heavy equipment, etc.).
• Office work will consist of time sitting or standing at a desk and using a computer and other office equipment.

Work Environment / Environmental Factors:

• This position is based out of one of our MT, CO, or AZ office locations and will have office and field responsibilities. This position may have a hybrid work arrangement to be worked out with your supervisor, but the candidate must reside within a reasonable commuting distance of the local office. 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, for geotechnical terrain, noise, etc.). This can include 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 an office and field setting.

Target salary range: $80,000 to $90,000. 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.

Life at Tetra Tech:

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 Follow us on social media to learn more about our people, culture, and opportunities:

LinkedIn: @TetraTechCareers

X (Twitter): @TetraTechJobs

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

Please no phone calls or agencies.