Soils Technician

Geotechnical/Soils Technician – Diamond Bar, CA

Our office in Diamond Bar, CA is seeking a Geotechnical/Soils Technician to perform field duties for the Geological and Geotechnical Engineering group. Our clients include local, state, and federal government agencies, flood control and sanitation districts as well as private developers. Although most of our projects are in Southern California, we routinely provide services in Northern California, Arizona, and New Mexico.

Tetra Tech offers an excellent working environment, a competitive salary and benefits, a great variety of projects, and an outstanding potential for personal and professional growth. The pay scale for this position is $25-$35 an hour, based on qualifications and experience.

The main focus of this position is providing grading observation and field fill placement and compaction testing services, but the position anticipates engagement with other geotechnical field tasks such as permeability/percolation testing, slope inclinometer monitoring, pile and tieback/soil nail installation observations, landfill liner installation, construction vibrations monitoring, floor level surveys, field gradation testing, site reconnaissance, and assistance with field investigations.

Duties include but are not limited to field construction quality assurance activities and preparation of daily field reports for submittal to engineers. Familiarity and competency with public works and state agencies' projects and basic laboratory and concrete deputy services is welcome.

• 5+ years of relevant experience
• Nuclear gauge certification
• 40‑hour HAZWOPER certification
• Data entry and basic computer and math skills
• Adequate oral communication skills
• Strong attention to detail and organizational skills
• Ability/willingness to travel within the southwest
• Clean driving record and valid driver's license
• Must be able to work outdoors under varying weather conditions, travel by foot over rough terrain, and lift at least 40 pounds

• Comprehensive and market‑competitive benefits.
• 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.

Tetra Tech is a proud 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.